Spectral Narrowing of Diode Laser
Principal Investigator : Dr. Michel Lintz
Fundings : CNES
Summary and Results :We have achieved DFB laser diode line narrowing by simultaneously acting on the diode current via a feedback loop and on an external electrooptic phase modulator in feed-forward actuator. This configuration turns out to be very efficient in reaching large bandwidth in the phase correction: up to 15 MHz with commercial laser control units. About 98% of the laser power undergoes narrowing. The full width at half maximum of the narrowed optical spectrum is of less than 4 kHz.
Former investigator : Dr. Ha Phung
Publications and communications :
- Efficient diode laser line narrowing using dual, feed-forward + feed-back laser frequency controlEfficient diode laser line narrowing using dual, feed-forward + feed-back laser frequency control , Michel Lintz, Duy-Ha Phung, Jean-Pierre Coulon, Benoit Faure, Thomas Lévèque, Review of Scientific Instruments, American Institute of Physics, 2017, 88 (2), pp.26102 - 26102.