Broad area photonic crystal distributed feedback quantum cascade lasers emitting 34 W at λ∼4.36 μm

B. Gökden*, Y. Bai, N. Bandyopadhyay, S. Slivken, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

We demonstrate room temperature, high power, single mode, and diffraction limited operation of a two dimensional photonic crystal distributed feedback quantum cascade laser emitting at 4.36 μm. Total peak power up to 34 W is observed from a 3 mm long laser with 400 μm cavity width at room temperature. Far-field profiles have M2 figure of merit as low as 2.5. This device represents a significant step toward realization of spatially and spectrally pure broad area high power quantum cascade lasers.

Original languageEnglish (US)
Article number131112
JournalApplied Physics Letters
Volume97
Issue number13
DOIs
StatePublished - Sep 27 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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