Frequency stabilization of semiconductor lasers by resonant optical feedback.
With simple optical geometries a separate resonant Fabry-Perot cavity can serve as an optical feedback element that forces a semiconductor laser automatically to lock its frequency optically to the cavity resonance. This method is used to stabilize laser frequencies and reduce linewidths by a factor of 1000 from 20 MHz to approximately 20 kHz.
Dahmani
B
B
Hollberg
L
L
Drullinger
R
R