Narrow linewidth Brillouin laser based on chalcogenide photonic chip
Narrow linewidth Brillouin laser based on chalcogenide photonic chip
We present the first demonstration of a narrow linewidth, waveguide-based Brillouin laser which is enabled by large Brillouin gain of a chalcogenide chip. The waveguides are equipped with vertical tapers for low loss coupling. Due to optical feedback for the Stokes wave, the lasing threshold is reduced to 360 mW, …