Title :
Narrow stripe membrane BH-DFB lasers with surface corrugation for stable single-mode operation
Author :
Sakamoto, Shinichi ; Kawashima, Hiroyuki ; Naitoh, Hideyuki ; Tamura, Shigeo ; Maruyama, Takeo ; Arai, Shigehisa
Author_Institution :
Tokyo Inst. of Technol.
Abstract :
A stable single-mode operation of membrane BH-DFB lasers was demonstrated under RT-CW operation by adopting a surface corrugation structure in order to maintain high index-coupling coefficient even for very narrow stripe width condition. It was estimated to be around 3000 cm-1 for 0.6 mum stripe width from its stop-band width of 68 nm. A threshold pump power as low as 0.69 mW (lambdapump = 980 nm) was achieved for the stripe width of 1.0 mum and the cavity length of 120 mum. By assuming an absorption coefficient of the pump beam of GaInAsP optical confinement layers and the active region to be 10000 cm-1, the corresponding threshold current was estimated to be 17 muA
Keywords :
III-V semiconductors; absorption coefficients; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; laser cavity resonators; laser modes; laser stability; optical pumping; semiconductor lasers; 0.6 mum; 0.69 mW; 1.0 mum; 120 mum; 17 muA; 293 to 298 K; 980 nm; BH-DFB lasers; GaInAsP; GaInAsP optical confinement; absorption coefficient; continuous-wave operation; high index-coupling coefficient; laser cavity; narrow stripe membrane; narrow stripe width condition; optical pumping; pump beam; room temperature operation; single-mode operation; stable laser operation; surface corrugation; Biomembranes; Corrugated surfaces; Distributed feedback devices; Laser excitation; Laser stability; Laser theory; Optical interconnections; Pump lasers; Semiconductor lasers; Surface emitting lasers;
Conference_Titel :
Indium Phosphide and Related Materials Conference Proceedings, 2006 International Conference on
Conference_Location :
Princeton, NJ
Print_ISBN :
0-7803-9558-1
DOI :
10.1109/ICIPRM.2006.1634129
