Engineering › Electrical and Electronic Engineering

Electric Discharge Pumped Lasers

Works Count: 85959

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Description

This cluster of papers focuses on the development and application of electric discharge pumped lasers, particularly emphasizing the use of atomic iodine and singlet oxygen generation for continuous wave operation and gain measurement. The research also covers topics such as copper vapor lasers, frequency conversion, and high power laser technology.

Keywords

Electric Discharge; Laser Oscillation; Atomic Iodine; Singlet Oxygen Generation; Oxygen-Iodine Laser; Gain Measurement; Continuous Wave Operation; Copper Vapor Laser; High Power Laser; Frequency Conversion

Chemical Processing with Lasers

1986-01-01

D. Bäuerle

Laser Processing and Chemistry

1996-01-01

D. Bäuerle

Laser Photoionization Spectroscopy

1987-01-01

V. S. Letokhov

Single Charge Tunneling: Coulomb Blockade Phenomena in Nanostructures

1993-04-01

Hermann Grabert , Michel Devoret , M. A. Kastner

Introduction to Single Charge Tunneling M.H. Devoret, H. Grabert. Charge Tunneling Rates in Ultrasmall Junctions G.L. Ingold, Yu V. Nazarov. Transferring Electrons One by One D. Esteve. Josephson Effect in … Introduction to Single Charge Tunneling M.H. Devoret, H. Grabert. Charge Tunneling Rates in Ultrasmall Junctions G.L. Ingold, Yu V. Nazarov. Transferring Electrons One by One D. Esteve. Josephson Effect in Low-Capacitance Tunnel Junctions M. Tinkham. Coulomb-Blockade Oscillations in Semiconductor Nanostructures H. Van Houten, et al. Macroscopic Quantum Tunneling of Charge and Co-Tunneling D.V. Averin, Yu. V. Nazarov. One-Dimensional Arrays of Small Tunnel Junctions P. Delsing. Single Charges in Two-Dimensional Junction Arrays J.E. Mooij, G. Schon. Possible Applications of the Single Charge Tunneling D.V. Averin, K.K. Kikharev. Index.

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Industrial Applications of Lasers

1978-01-01

John F. Ready

Saturation Effects in High-Gain Lasers

1965-08-01

W. W. Rigrod

Earlier calculations of the radiation intensity obtainable from lasers with homogeneous line broadening are generalized to include arbitrarily large loss fractions per pass. The conditions for maximum transmitted or internally … Earlier calculations of the radiation intensity obtainable from lasers with homogeneous line broadening are generalized to include arbitrarily large loss fractions per pass. The conditions for maximum transmitted or internally dissipated power are derived, as well as the axial distribution of radiation within the active medium. The relevance of these calculations to high-gain gas lasers is discussed.

Chemical actinometry (IUPAC Technical Report)

2004-01-01

Hans-Rudolf Kuhn , Silvia E. Braslavsky , Rainer Schmidt

This document updates the first version of the IUPAC technical report on “Chemical actinometers” published in Pure Appl. Chem . 61 ,187-210 (1989). Since then, some methods have been improved, … This document updates the first version of the IUPAC technical report on “Chemical actinometers” published in Pure Appl. Chem . 61 ,187-210 (1989). Since then, some methods have been improved, procedures have been modified, and new substances have been proposed as chemical actinometers. An actinometer is a chemical system or a physical device by which the number of photons in a beam absorbed into the defined space of a chemical reactor can be determined integrally or per time. This compilation includes chemical actinometers for the gas, solid, microheterogeneous, and liquid phases, as well as for the use with pulsed lasers for the measurement of transient absorbances, including the quantum yield of phototransformation, as well as the literature for each of the actinometers. The actinometers listed are for the use in the wavelength range from the UV to the red region of the spectrum. A set of recommended standard procedures is also given. Advantages and disadvantages are discussed regarding the use of chemical actinometers vs. electronic devices for the measurement of the number of photons absorbed. Procedures for the absolute measurement of incident photon flux by means of photodiodes are also discussed.

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A proposed class of hetero-junction injection lasers

1963-12-01

H. Kroemer

Repetitively Pulsed Tunable Dye Laser for High Resolution Spectroscopy

1972-04-01

T. W. Hänsch

A pulsed tunable dye laser with a bandwidth of less than 0.004 A, repetitively pumped by a nitrogen laser, is described. An intracavity beam expanding telescope together with a diffraction … A pulsed tunable dye laser with a bandwidth of less than 0.004 A, repetitively pumped by a nitrogen laser, is described. An intracavity beam expanding telescope together with a diffraction grating in Littrow mount and a tilted Fabry-Perot etalon provide convenient, very reproducible wavelength tuning and good stability. Output peak powers in the kilowatt range at 5-100 nsec pulse width and repetition rates up to 100 pps can be generated from the near-ultraviolet throughout the visible spectrum.

Atomic and Laser Spectroscopy

2006-10-05

Alan Corney

1. Introduction 2. Review of Classical Electrodynamics 3. Review of Quantum Mechanics 4. The Spontaneous Emission of Radiation 5. Selection Rules for Electric Dipole Transitions 6. Measurement of Radiative Lifetimes … 1. Introduction 2. Review of Classical Electrodynamics 3. Review of Quantum Mechanics 4. The Spontaneous Emission of Radiation 5. Selection Rules for Electric Dipole Transitions 6. Measurement of Radiative Lifetimes of Atoms and Molecules 7. Forbidden Transitions and Metastable Atoms 8. The Width and Shape of Spectral Lines 9. The Absorption and Stimulated Emission of Radiation 10. Radiative Transfer and the Formation of Spectral Lines 11. Population Inversion Mechanisms in Gas Lasers 12. Resonant Modes of Optical Cavities 13. Saturation Characteristics and the Single-Frequency Operation of Gas Lasers 14. Turnable Dye Lasers and Atomic Spectroscopy 15. The Hanle Effect and the Theory of Resonance Flourescence Experiments 16. Optical Double Resonance Experiments 17. Optical Pumping Experiments 18. The Hyperfine Structure of Atoms and its Investigation by Magnetic Resonance Methods Appendix

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Calculated spontaneous emission factor for double-heterostructure injection lasers with gain-induced waveguiding

1979-07-01

K. Petermann

The fraction of spontaneous emission going into an oscillating laser mode has been calculated. It is shown that this fraction strongly depends on the strength of astigmatism in the laser … The fraction of spontaneous emission going into an oscillating laser mode has been calculated. It is shown that this fraction strongly depends on the strength of astigmatism in the laser output beam. Therefore the spontaneous emission factor in planar stripe lasers with narrow stripe is in the order of 10 -4 and by one order of magnitude larger than in injection lasers with a comparable active layer volume and with a built-in index waveguide. It is shown that the spontaneous emission factor is approximately proportional to the solid angle of laser radiation and nearly independent of the transverse active layer dimensions. Owing to the large spontaneous emission factor, the spectral width of narrow planar stripe lasers is significantly broader compared to narrow stripe lasers with a built-in index waveguide. In addition the large spontaneous emission coefficient also yields a much stronger damping of relaxation oscillations.

New developments in laser resonators

1990-06-01

A. E. Siegman

This paper gives brief descriptions of three recent developments not so much in laser resonators themselves as in the tools for analyzing and measuring the quality of laser beams and … This paper gives brief descriptions of three recent developments not so much in laser resonators themselves as in the tools for analyzing and measuring the quality of laser beams and resonators. These tools include personal computer programs for analyzing laser beams and resonators; a new method for characterizing and measuring the "beam quality" of a laser output beam; and a new "ray-pulse" method of analysis for describing beams and resonators which involve any combination of ultrashort optical pulses, broadband optical signals, and dispersive optical elements.

An electronic transition chemical laser

1978-04-15

William E. McDermott , N. R. Pchelkin , D. J. Benard +1 more

cw laser action was achieved on the 2P1/2→2P3/2 transition of the iodine atom by energy transfer from the 1Δ metastable state of O2. The excited oxygen was generated chemically by … cw laser action was achieved on the 2P1/2→2P3/2 transition of the iodine atom by energy transfer from the 1Δ metastable state of O2. The excited oxygen was generated chemically by flowing chlorine gas through a basic solution of 90% H2O2. The effluent from the oxygen generator was mixed with molecular iodine at the entrance of a longitudinal flow laser cavity where the I2 was dissociated by a small amount of O2(1Σ) that was present in the flow due to energy pooling processes. The measured output power was greater than 4 mW.

�ber die nat�rliche Linienbreite in der Strahlung des harmonischen Oszillators

1930-11-01

V. F. Weisskopf , E. P. Wigner

Fundamentals of Molecular Spectroscopy

1990-12-01

WalterS. Struve , I.M. Mills

Astigmatically compensated cavities for CW dye lasers

1972-03-01

H. Kogelnik , Erich P. Ippen , A. Dienes +1 more

An analysis is given of folded 3-mirror laser resonators with an internal cell set at Brewster's angle. A method is described to compensate the astigmatic distortions introduced by both the … An analysis is given of folded 3-mirror laser resonators with an internal cell set at Brewster's angle. A method is described to compensate the astigmatic distortions introduced by both the internal mirror and the cell. This compensation is achieved for a specific relation between cell thickness and folding angle. It allows the formation of a tight intracavity focus as required in applications such as CW dye lasers. A discussion is given of the mode characteristics of compensated cavities and of the limitation on beam concentration set by the thickness of the Brewster cell.

A narrow-band tunable diode laser system with grating feedback, and a saturated absorption spectrometer for Cs and Rb

1992-12-01

K. B. MacAdam , Andy Steinbach , Carl Wieman

Detailed instructions for the construction and operation of a diode laser system with optical feedback are presented. This system uses feedback from a diffraction grating to provide a narrow-band continuously … Detailed instructions for the construction and operation of a diode laser system with optical feedback are presented. This system uses feedback from a diffraction grating to provide a narrow-band continuously tuneable source of light at red or near-IR wavelengths. These instructions include machine drawings for the parts to be constructed, electronic circuit diagrams, and prices and vendors of the items to be purchased. It is also explained how to align the system and how to use it to observe saturated absorption spectra of atomic cesium or rubidium.

Absolute iodine (I2) standards measured by means of Fourier transform spectroscopy

1979-01-01

S. Gerstenkorn , P. Luc

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Nonlinear Laser Spectroscopy

1978-03-01

V. S. Letokhov , V. P. Chebotayev , S. Ezekiel

1. Introduction.- 2. Elements of the Theory of Resonant Interaction of a Laser Field and Gas.- 3. Narrow Saturation Resonances on Doppler-Broadened Transition.- 4. Narrow Resonances of Two-Photon Transitions Without … 1. Introduction.- 2. Elements of the Theory of Resonant Interaction of a Laser Field and Gas.- 3. Narrow Saturation Resonances on Doppler-Broadened Transition.- 4. Narrow Resonances of Two-Photon Transitions Without Doppler Broadening.- 5. Nonlinear Resonances on Coupled Doppler-Broadened Transitions.- 6. Narrow Nonlinear Resonances in Spectroscopy.- 7. Nonlinear Atomic Laser Spectroscopy.- 8. Nonlinear Molecular Laser Spectroscopy.- 9. Nonlinear Narrow Resonances in Quantum Electronics.- 10. Narrow Nonlinear Resonances in Experimental Physics.- 11. Conclusion.- Author Index.

The Supercontinuum Laser Source

1989-01-01

R. R. Alfano

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Laser ionization of noble gases by Coulomb-barrier suppression

1991-04-01

Steven J. Augst , D. D. Meyerhofer , D. Strickland +1 more

Laser ionization of noble gases was studied with a 1.053-μm, 1-psec Nd:glass laser. A systematic scan of intensities from mid-1013 W/cm2 to mid-1016 W/cm2 was performed, resulting in the production … Laser ionization of noble gases was studied with a 1.053-μm, 1-psec Nd:glass laser. A systematic scan of intensities from mid-1013 W/cm2 to mid-1016 W/cm2 was performed, resulting in the production of charge states as high as Xe12+. Ionization occurs exclusively in the tunneling regime. We compare experimental ion production rates with those predicted by several different theories. Agreement between experimental ion-production curves and theoretical predictions is good for two theoretical models: (1) an elaboration of the Keldysh tunneling model, developed by Ammosov et al. [ Sov. Phys. JETP64, 1191 ( 1986)] and (2) a much more primitive model, based on Coulomb-barrier suppression, in which tunneling and other quantum-mechanical effects are ignored completely. The success of the more primitive model suggests that a new term, barrier-suppression ionization, rather than tunneling or multiphoton ionization, may be the most appropriate at this wavelength and in this range of intensities.

Raman Effect in Zinc Oxide

1966-02-11

T. C. Damen , S. P. S. Porto , B. Tell

The Raman effect in zinc oxide has been measured using the continuous helium-neon and ionized argon lasers as sources. The frequency and symmetry character of the fundamental modes have been … The Raman effect in zinc oxide has been measured using the continuous helium-neon and ionized argon lasers as sources. The frequency and symmetry character of the fundamental modes have been determined. The results are: two ${E}_{2}$ vibrations at 101 and 437 ${\mathrm{cm}}^{\ensuremath{-}1}$; one transverse ${A}_{1}$ at 381 ${\mathrm{cm}}^{\ensuremath{-}1}$ and one transverse ${E}_{1}$ at 407 ${\mathrm{cm}}^{\ensuremath{-}1}$; one longitudinal ${A}_{1}$ at 574 ${\mathrm{cm}}^{\ensuremath{-}1}$ and one longitudinal ${E}_{1}$ at 583 ${\mathrm{cm}}^{\ensuremath{-}1}$.

High Collection Nonimaging Optics

1989-07-05

Roland Winston

Nonimaging optics departs from the methods of traditional optical design to develop instead techniques for maximizing the collecting power of concentrating elements and systems. Designs which exceed the concentration attainable … Nonimaging optics departs from the methods of traditional optical design to develop instead techniques for maximizing the collecting power of concentrating elements and systems. Designs which exceed the concentration attainable with focusing techniques by factors of four or more and approach the theoretical limit are possible (ideal concentrators). The methodology for designing high collection nonirnaging systems is described.

JUNCTION LASERS WHICH OPERATE CONTINUOUSLY AT ROOM TEMPERATURE

1970-08-01

I. Hayashi , M. B. Panish , P. W. Foy +1 more

Double-heterostructure GaAs–Alx Ga1−x As injection lasers which operate continuously at heat-sink temperatures as high as 311°K have been fabricated by liquid-phase epitaxy. Thresh-olds for square diodes as low as 100 … Double-heterostructure GaAs–Alx Ga1−x As injection lasers which operate continuously at heat-sink temperatures as high as 311°K have been fabricated by liquid-phase epitaxy. Thresh-olds for square diodes as low as 100 A/cm2 and for Fabry-Perot diodes as low as 1600 A/cm2 have been obtained. Some details of preparation and properties are given.

Studies of multiphoton production of vacuum-ultraviolet radiation in the rare gases

1987-04-01

A. McPherson , George N. Gibson , Hernán Jara +5 more

Measurements of the vacuum-ultraviolet (<80-nm) radiation produced by intense ultraviolet (248-nm) irradiation (1015–1016 W/cm2) of rare gases have revealed the copious presence of both harmonic radiation and fluorescence from excited … Measurements of the vacuum-ultraviolet (<80-nm) radiation produced by intense ultraviolet (248-nm) irradiation (1015–1016 W/cm2) of rare gases have revealed the copious presence of both harmonic radiation and fluorescence from excited levels. The highest harmonic observed was the seventeenth (14.6 nm) in Ne, the shortest wavelength ever produced by that means. Strong fluorescence was seen from ions of Ar, Kr, and Xe, with the shortest wavelengths observed being below 12 nm. Furthermore, radiation from inner-shell excited configurations in Xe, specifically the 4d95s5p → 4d105s manifold of Xe7+ at ~17.7 nm, was detected. These experimental findings, in alliance with other studies concerning multielectron processes, give evidence for a role of electron correlations in a direct nonlinear process of inner-shell excitation.

Continuous-Wave Laser Action on Vibrational-Rotational Transitions of C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

1964-11-30

C. K. N. Patel

We have obtained cw laser action on a number of rotational transitions of the ${{\ensuremath{\Sigma}}_{u}}^{+}\ensuremath{-}{{\ensuremath{\Sigma}}_{g}}^{+}$ vibrational band of C${\mathrm{O}}_{2}$ around 10.4 and 9.4\ensuremath{\mu}. The laser wavelengths are identified as the … We have obtained cw laser action on a number of rotational transitions of the ${{\ensuremath{\Sigma}}_{u}}^{+}\ensuremath{-}{{\ensuremath{\Sigma}}_{g}}^{+}$ vibrational band of C${\mathrm{O}}_{2}$ around 10.4 and 9.4\ensuremath{\mu}. The laser wavelengths are identified as the $P$-branch rotational transitions from $P(12)$ to $P(38)$ for the 00\ifmmode^\circ\else\textdegree\fi{}1-10\ifmmode^\circ\else\textdegree\fi{}0 band and from $P(22)$ to $P(34)$ for the 00\ifmmode^\circ\else\textdegree\fi{}1-02\ifmmode^\circ\else\textdegree\fi{}0 band. Strongest laser transition occurs at 10.6324\ensuremath{\mu} (vacuum). A cw power output of about 1 mW has been measured. All these laser transitions can also be made to oscillate under pulsed discharge conditions with a small increase in the peak laser power output. No $R$-branch transitions have been seen to oscillate either under cw or pulsed discharge conditions. The wavelength measurements are in reasonable agreement with earlier measurement of the bands in absorption, but there are slight differences. These are ascribed to possible pressure-dependent frequency shift effects. A study has been made of the time dependence of the laser output under pulsed excitation, and some conclusions about possible excitation processes are given. Theoretical interpretation given earlier for laser action on vibrational-rotational transitions is discussed in a generalized form. The theory is applicable to both the linear polyatomic molecules and the diatomic molecules.

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Spectrally narrow pulsed dye laser without beam expander

1978-07-15

Michael G. Littman , Harold Metcalf

We have developed a simplified version of the side-pumped pulsed dye laser which has a spectral halfwidth of 1.25 GHz and a peak power of 10 kW at 600 nm. … We have developed a simplified version of the side-pumped pulsed dye laser which has a spectral halfwidth of 1.25 GHz and a peak power of 10 kW at 600 nm. The basic laser consists of only four components (output mirror, dye cell, diffraction grating, and tuning mirror) and is exceptionally easy to align. Since the beam expander has been eliminated, the laser cavity can be made quite compact. Under the condition of reduced gain, the laser has been operated in a single mode.

Multiphoton Dissociation of Polyatomic Molecules

1979-10-01

P. A. Schulz , A S Sudb¢ , D. Krajnovich +3 more

The dynamics of infrared multiphoton excitation and dissociation of SF, has been investigated under collision free conditions by a crossed laser-molecular beam method.In order to understand the excitation mechanism and … The dynamics of infrared multiphoton excitation and dissociation of SF, has been investigated under collision free conditions by a crossed laser-molecular beam method.In order to understand the excitation mechanism and to elucidate the requirements of laser intensity and energy fluence, a series of experiments have been carried out to measure the dissociation yield dependences on energy fluence, vibrational temperature of SF & , the pulse duration of the C0 2 laser and the frequency in both one and two laser experiments.Translational energy distributions of the SF,-dissociation product measured by time of flight and angular distributions and the dissociation lifetime of excited SF 6 as inferred from the observa tion of secondary dissociation of SF g into SF.and F during the laser pulse suggest that the dynamics of dissociation of excited v u understand multiphoton dissociation of polyatomic molecules.Yuan Lee is the person most responsible for the success of the experiments that, culminated in this thesis.When I did not know what part of the molecular beam apparatus had gone awry, Yuan was there to help find and fix the problem.I most appreciate his incessant search for experimental results, his quick comprehension and analysis of those results, and his synthesis of a new framework in which to view the experimental results.Ron Shen was also intimately involved in these experiments and I thank him for giving me a clearer understanding of the excitation process in multiphoton dissociation.By his patience in pointing out how my explanations were confused and muddled, he helped to make this thesis into as readable a document as it is.I owe him a debt of gratitude for making me a better writer.Mike Coggiola first introduced me to the crossed molecular beam technology that was vital for doing these experiments.Together with Ed Grant, we made the first tentative steps toward understanding SF, multiphoton dissociation, which is the subject of Chapter II.Ed Grant performed many calculations that convinced me of the importance of the rate equation model for understanding the roles of laser intensity and energy fluence in multiphoton dissociation, the subject of Chapter III.-V-Aasmund Sudbtf is primarily responsible for much of the analysis of the many angular and time-of-flight distributions that we obtained during 1977.He combined the traits of efficiency and diligence at work with a good sense of humor.Happily these traits were also apparent in Doug Krajnovich during our search to unravel the mysteries of C-FgCl multiphoton dissociation.Anna Giardini-Guidoni provided pleasant and valuable assistance during three months of study of C 2 FgCl.I wish to thank Ann Weightman for her essentially error

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Monte Carlo simulation of electron drift and diffusion in counting gases under the influence of electric and magnetic fields

1999-01-01

S. Biagi

Handbuch der physiologischen Optik

1896-12-01

P. Cz.

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Heterostructure Lasers

1979-05-01

H. C. Casey , M. B. Panish , T. A. Roth

Short Pulse Laser Interactions with Matter

2005-09-01

P. Gibbon

The Diffusion and drift of electrons in gases

1974-01-01

Leonard George Holden Huxley , R. W. Crompton

Resonance radiation and excited atoms

1935-03-01

T.K. Cleveland

Facts relating to optical science

1836-01-01

W. H. F. Talbot

Optical Interactions in Solids

1970-01-01

Baldassare Di Bartolo , Robert Summitt

Elements of Quantum Mechanics Elements of Group Theory Connection of Quantum Mechanics with Group Theory The Hydrogen Atom The Complex Atom - Multiplet Theory The Magnetic Ion in a Crystal … Elements of Quantum Mechanics Elements of Group Theory Connection of Quantum Mechanics with Group Theory The Hydrogen Atom The Complex Atom - Multiplet Theory The Magnetic Ion in a Crystal - The Role of Symmetry The Weak Field Scheme The Medium Field Scheme The Strong Field Scheme Covalent Bonding and Its Effect on Magnetic Ions in Crystals The Quantum Theory of the Radiation Field Molecular Vibrations Lattice Vibrations The Ion-Photon Interaction - Absorption and Emission of Radiation The Ion-Vibration Interaction - Radiationless Processes - Thermal Shift and Broadening of Sharp Lines Vibrational-Electronic Interaction and Spectra Absorption Spectra of Magnetic Ions in Crystals Fluorescence Spectra of Magnetic Ions in Crystals Elements of Laser Theory

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Advances in Electronics and Electron Physics

1969-01-01

Will UV Lasers Beat the Blues?

1997-05-09

Robert F. Service

Principles of Lasers

1998-01-01

O. Svelto

Principles of Lasers

2010-01-01

O. Svelto

Laser Processing and Chemistry

2000-01-01

D. Bäuerle

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Laser Processing and Chemistry

2011-01-01

D. Bäuerle

Elements of Quantum Optics

1999-01-01

Pierre Meystre , Murray Sargent

Physics of Nonneutral Plasmas

2001-10-01

Ronald C. Davidson

Theoretical Models of Nonneutral Plasma Fundamental Properties of Nonneutral Plasma Kinetic Equilibrium and Stability Properties Macroscopic Equilibrium and Stability Properties The Diocotron Instability Coherent Electromagnetic Wave Generation by the Cyclotron … Theoretical Models of Nonneutral Plasma Fundamental Properties of Nonneutral Plasma Kinetic Equilibrium and Stability Properties Macroscopic Equilibrium and Stability Properties The Diocotron Instability Coherent Electromagnetic Wave Generation by the Cyclotron Maser and Free Electron Laser Instabilities Equilibrium and Stability Properties of Intense Nonneutral Flow in High-Power Diodes Propagation and Stability of Intense Charged Particle Beams in a Solenoidal Focusing Field Propagation and Stability of Intense Charged Particle Beams in an Alternating-Gradient Focusing Field.

Lasers and Excited States of Rare Earths

1977-01-01

R. Reisfeld , Christian K. Jørgensen

Photometric, Radiometric, and Quantum Light Units of Measure: A Review of Procedures for Interconversion

1983-12-01

R. W. Thimijan , Royal D. Heins

Abstract Conversion constants and procedures necessary to interconvert photometric, radiometric, and quantum light units are described for sunlight and 9 electrical light sources. Abstract Conversion constants and procedures necessary to interconvert photometric, radiometric, and quantum light units are described for sunlight and 9 electrical light sources.

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Efficient 320 nm continuous-wave ultraviolet Pr:LiYF₄ Laser via optimized pump beam reshaping

2025-06-25

Shengyuan Pan , Z Jiang , Jinming Huang +4 more | Optics Express

Initial power compression efficiency of relativistic laser self-channeling in experimental Xenon gas target

2025-06-24

Ji Zhao , Walter H. Schroeder | Optics Continuum

Nonadiabatic reactive scattering of hydrogen on different surface facets of copper

2025-06-20

NULL AUTHOR_ID | Physical review. B./Physical review. B

Control of energy spectra and enhancement of energy conversion of fast electrons generated by dual-color lasers

2025-06-19

NULL AUTHOR_ID | Physical review. E

Mitigating the Impact of Laser Phase Noise and Frequency Drift in Φ-OTDR with Delay-beat Differential Phase Demodulation

2025-06-17

Heng Qian , Li Liu , Haijun He +4 more | Optics Express

Extracavity third-harmonic generation at 213nm of a passively Q-switched Pr:YLF laser

2025-06-17

Zheng Quan , Xi Chen , Chuanbo Wang +4 more | Research Square (Research Square)

<title>Abstract</title> We report on short pulse deep ultraviolet laser from an extracavity third harmonic generation passively Q-switched (PQ) Pr:YLF laser operating at 213nm. By compensating the thermal lens effect of … <title>Abstract</title> We report on short pulse deep ultraviolet laser from an extracavity third harmonic generation passively Q-switched (PQ) Pr:YLF laser operating at 213nm. By compensating the thermal lens effect of the laser crystal, optimizing the cavity length and utilizing Co:MgAl2O4(MALO) as the saturable absorber, we obtain the highest pulse output power at 213nm from a PQ Pr:YLF laser. Under pumping with a fiber coupled blue laser diode array, we realized 11.87ns pulses at a repetition rate of 15KHz from a 7.5mm long cavity at an average output power of 53.1mW at 213nm. This is the highest PQ pulse deep UV at 213nm generated by extracavity third harmonic generation of a passively Q-switched Pr:YLF laser.

Author Correction: Achieving high polarization of photons emitted by unpolarized electrons in ultrastrong laser fields

2025-06-12

Xian-Zhang Wu , Yan-Fei Li , Yue-Yue Chen +1 more | Communications Physics

The DOS function in QWHDSLs under Magnetic Quantization and Einstein’s Photoemission

2025-06-08

| Series on the foundations of natural science and technology

Correction: Generation and regulation of electromagnetic pulses induced by multi-petawatt laser coupling with gas jets

2025-06-01

Qiang-You He , Zitao Wang , Zhigang Deng +7 more | Nuclear Science and Techniques

Why the laser revolution is far from over

2025-06-01

| PhotonicsViews

Abstract While laser technology has reached maturity in some fields, it still is a game changer for many others. Professor Andreas Tünnermann, director of the Fraunhofer IOF, discusses how photonics … Abstract While laser technology has reached maturity in some fields, it still is a game changer for many others. Professor Andreas Tünnermann, director of the Fraunhofer IOF, discusses how photonics is stepping into new roles by becoming a crucial enabler for AI, and why the evolution of fiber lasers is far from over.