Title :
Improved rate equations for external cavity semiconductor lasers
Author :
Rong-qing, Hui ; Shang-ping, Tao
Author_Institution :
Optical Commun. Lab., Beijing Univ. of Post & Telecommun., China
fDate :
6/1/1989 12:00:00 AM
Abstract :
A set of improved Langevin rate equations for external-cavity semiconductor lasers which can be used to solve transient as well as steady-state problems is derived. A simple relationship among chirp reduction, line narrowing and dynamic stability is given. An experiment on an external-coupled-cavity semiconductor laser consisting of a 1.3-μm buried-heterostructure laser diode with an antireflection (AR)-coated facet and a 4-mm GRIN rod is reported. Because of its strong optical feedback, it provides a stable single mode, which is not sensitive to the environmental perturbations. This agrees with the theoretical results. No mode jumping occurred during 12 h continuous observation
Keywords :
antireflection coatings; feedback; gradient index optics; laser cavity resonators; laser modes; laser theory; laser transitions; semiconductor junction lasers; spectral line breadth; GRIN rod; antireflection-coated facet; buried-heterostructure laser diode; chirp reduction; dynamic stability; environmental perturbations; external cavity semiconductor lasers; external-coupled-cavity semiconductor laser; improved Langevin rate equations; line narrowing; optical feedback; stable single mode; Chirp; Diode lasers; Equations; Laser feedback; Laser modes; Laser theory; Optical feedback; Semiconductor lasers; Stability; Steady-state;
Journal_Title :
Quantum Electronics, IEEE Journal of
