TITLE

High power broad area quantum cascade lasers

AUTHOR(S)
Bai, Y.; Slivken, S.; Darvish, S. R.; Haddadi, A.; Gokden, B.; Razeghi, M.
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/30/2009, Vol. 95 Issue 22, p221104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Broad area quantum cascade lasers (QCLs) are studied with ridge widths up to 400 μm, in room temperature pulsed mode operation at an emission wavelength around 4.45 μm. The peak output power scales linearly with the ridge width. A maximum total peak output power of 120 W is obtained from a single 400-μm-wide device with a cavity length of 3 mm. A stable far field emission characteristic is observed with dual lobes at ±38° for all tested devices, which suggests that these broad area QCLs are highly resistant to filamentation.
ACCESSION #
45610556

 

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