Title :
Sub-milliampere operation of 1.55 μm wavelength high index-coupled buried heterostructure distributed feedback lasers
Author :
Nunoya, N. ; Nakamura, M. ; Yasumoto, H. ; Morshed, Monir ; Fukuda, K. ; Tamura, S. ; Arai, S.
Author_Institution :
Center for Quantum Effect Electron., Tokyo Inst. of Technol., Japan
fDate :
7/6/2000 12:00:00 AM
Abstract :
Sub-milliampere operation was realised in 1.55 μm wavelength high index-coupled buried heterostructure distributed feedback (BH-DFB) lasers consisting of deeply etched double-quantum-well wirelike active regions. A threshold current Ith as low as 0.7 mA and an external differential quantum efficiency of 23%/facet were obtained for a cavity length of 200 μm with cleaved facets and a stripe width of 2.3 μm
Keywords :
MOCVD; distributed feedback lasers; laser beams; laser cavity resonators; laser feedback; optical fabrication; quantum well lasers; semiconductor quantum wires; vapour phase epitaxial growth; 0.7 mA; 1.55 mum; 2.3 mum; 200 mum; 23 percent; buried heterostructure distributed feedback lasers; cavity length; cleaved facets; deeply etched double-quantum-well wirelike active regions; double-quantum-well wirelike active regions; external differential quantum efficiency; high index-coupled buried heterostructure distributed feedback lasers; index-coupled double quantum well distributed feedback lasers; stripe width; sub-milliampere operation; threshold current; wirelike active regions;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000879
