Title :
Diode lasers locked to noisy injection
Author :
Van der Graaf, Wim A. ; Levine, Alfred M. ; Lenstra, Daan
Author_Institution :
Dept. of Phys. & Astron., Vrije Univ., Amsterdam, Netherlands
fDate :
3/1/1997 12:00:00 AM
Abstract :
We have analyzed the behavior of a diode laser with low-amplitude optical injection. The noisy injection field has phase fluctuations only, with a linewidth larger than both the free-running slave laser linewidth and the locking range. Simulations show that the laser output spectrum can be much narrower than the injection spectrum and may have a dip at the free-running laser frequency. A model describing these features is based on linear superposition of the stationary responses to monochromatic injection. The mechanism of line narrowing is that the response to injection outside the locking range lies mainly inside
Keywords :
fluctuations; laser mode locking; laser noise; laser theory; semiconductor device models; semiconductor device noise; semiconductor lasers; spectral line narrowing; diode laser mode locking; diode laser model; free-running laser frequency; free-running slave laser linewidth; injection spectrum; laser output spectrum; line narrowing mechanism; linear superposition; linewidth; locking range; low-amplitude optical injection; monochromatic injection; noisy injection; noisy injection field; phase fluctuations; simulations; stationary responses; Diode lasers; Frequency; Gas lasers; Laser mode locking; Laser theory; Nonlinear optics; Optical noise; Phase noise; Semiconductor device noise; Semiconductor lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
