Title :
Laser linewidth with gain compression
Author_Institution :
Montpellier II Univ., France
Abstract :
An exact yet simple expression for the linewidth of laser diodes based on the Nyquist formula is given. The expression applies to the case where the optical gain depends on both the carrier and photon numbers and differs from the expression derived from standard rate equations. Gain compression in conjunction with an electrical conductance may reduce both the linewidth and the intensity noise.
Keywords :
laser theory; semiconductor junction lasers; spectral line breadth; Nyquist formula; electrical conductance; gain compression; intensity noise; laser diodes; optical gain; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911458
