GaInAsSb-AlGaAsSb distributed feedback lasers emitting near 2.4 μm
We have investigated fabrication and characteristics of continuous wave (cw) GaInAsSb-AlGaAsSb distributed feedback (DFB) lasers in the 2.4-μm range. Single-mode DFB emission is obtained without overgrowth by first order Cr-Bragg gratings on both sides of a laser ridge. The cw threshold currents for...
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Published in | IEEE photonics technology letters Vol. 16; no. 2; pp. 380 - 382 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
IEEE
01.02.2004
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Subjects | |
Online Access | Get full text |
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Summary: | We have investigated fabrication and characteristics of continuous wave (cw) GaInAsSb-AlGaAsSb distributed feedback (DFB) lasers in the 2.4-μm range. Single-mode DFB emission is obtained without overgrowth by first order Cr-Bragg gratings on both sides of a laser ridge. The cw threshold currents for a cavity with a length of 800 μm and a width of 4 μm are around 30 mA. At 20/spl deg/C and at an injection current of 190 mA output powers of 8.5 mW were realized. Monomode emission with a side-mode suppression ratio (SMSR) of 33 dB has been obtained. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1041-1135 1941-0174 |
DOI: | 10.1109/LPT.2003.821239 |