Open AccessThe effect of gain medium length on dynamic mode stability in semiconductor lasers with a long intra-cavity filter
Author(s) -
OhKyong Kwon,
Chul Wook Lee,
Jang Wook Shin,
Eundeok Sim,
Jong-Hoi Kim,
Dong Hun Lee,
Dong Soo Bang,
Yong Soon Baek
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.022838
Subject(s) - lasing threshold , optics , materials science , semiconductor laser theory , laser , filter (signal processing) , active laser medium , stability (learning theory) , wavelength , semiconductor , gain , optoelectronics , physics , laser power scaling , computer science , machine learning , computer vision
We investigate theoretically and experimentally the effect of the physical length of gain medium on dynamic mode stability in semiconductor lasers with an intra-cavity filter. In simulation, two types of analysis models were used to examine the lasing properties and to analyze the dynamic mode stability of the external-cavity system, respectively. In experiment, two different kinds of the structures were fabricated and their spectra were analyzed. Both simulation and measurement results show clearly the length of the gain medium has a critical influence on the stability around the peak wavelength of the filter.