Title :
FM noise suppression and linewidth reduction in an injection-locked semiconductor laser
Author :
Mogensen, F. ; Olesen, Henning ; Jacobsen, G.
Author_Institution :
Technical University of Denmark, Electromagnetics Institute, Lyngby, Denmark
Abstract :
An expression is derived for the FM noise spectrum of an injection-locked semiconductor laser. For increasing injection level the FM noise spectrum and the lineshape change gradually from those of the slave laser to those of the master laser. The ultimate linewidth reduction is obtained if the locking bandwidth is large enough to accommodate the frequency fluctuations and if the detuning is controlled carefully.
Keywords :
electron device noise; semiconductor junction lasers; FM noise spectrum; FM noise suppression; detuning; frequency fluctuations; injection level; injection-locked semiconductor laser; lineshape change; linewidth reduction; locking bandwidth; master laser; slave laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850492
