Title :
Modeling and measurements of the radiative characteristics of high-power α-DFB lasers
Author :
Paschke, Katrin ; Bogatov, Alexander ; Drakin, Alexander E. ; Güther, Reiner ; Stratonnikov, Alexey A. ; Wenzel, Hans ; Erbert, Götz ; Tränkle, Gunther
Author_Institution :
Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin, Germany
Abstract :
A new above-threshold model of α-DFB lasers is presented. It is based on a generalized beam-propagation method and takes into account spatial hole burning and self-heating effects. Up to moderate output powers, a good agreement between simulated and measured radiative characteristics is obtained. The theoretical model was used to design an optimized laser structure with a 4-mm-long cavity, which yielded a maximum output power of 3 W with a times-diffraction-limit factor of M2≈3.
Keywords :
Bragg gratings; distributed feedback lasers; finite difference methods; laser cavity resonators; optical hole burning; semiconductor lasers; α-DFB lasers; angled-grating laser; distributed-feedback laser; generalized beam-propagation method; high brightness; high-power semiconductor laser; near-infrared range; optimized laser structure; radiative characteristics; self-heating effects; simulated cavity; slanted Bragg grating; spatial hole burning; stationary simulation; Bragg gratings; Distributed feedback devices; Fiber lasers; Laser feedback; Laser modes; Laser radar; Laser theory; Optical design; Power generation; Semiconductor lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2003.818361
