Technique for in situ measurement of free spectral range and transverse mode spacing of optical cavities
Technique for in situ measurement of free spectral range and transverse mode spacing of optical cavities
Length and g-factor are fundamental parameters that characterize optical cavities. We developed a technique to measure these parameters in situ by determining the frequency spacing between the resonances of fundamental and spatial modes of an optical cavity. Two laser beams are injected into the cavity, and their relative frequency is …