Title :
Above threshold analysis of mode discrimination in circular grating surface-emitting lasers with saturable absorber
Author :
Kossek, Tomasz ; Szczepanski, Pawel ; Paszkiewicz, Robert
Author_Institution :
Nat. Inst. of Telecommun., Warsaw, Poland
Abstract :
In this paper, the influence of introducing of passive region (saturable absorber) on threshold circular mode generation was discussed. The theoretical model of threshold operation of the circular grating surface-emitting (CG-SEL) laser taking into account effect of spatial hole burning and reflection from integrated outcoupler was proposed. A semiclassical model based on vector-wave self-consistent nonlinear coupled-mode equations was developed. Analysis of laser characteristics leads us to conclusion that the introduced saturable absorber causes azimutal mode discrimination and also bistable operation.
Keywords :
coupled mode analysis; diffraction gratings; integrated optics; laser modes; nonlinear equations; optical bistability; optical couplers; optical hole burning; optical saturable absorption; surface emitting lasers; azimutal mode discrimination; bistable operation; circular grating surface-emitting lasers; integrated outcoupler; laser characteristics; nonlinear coupled-mode equations; passive region; saturable absorber; spatial hole burning; threshold analysis; threshold circular mode generation; Distributed Bragg reflectors; Gratings; Laser modes; Laser theory; Microelectronics; Nonlinear equations; Optical coupling; Power generation; Power lasers; Surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313707
