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28 February 2011 High peak power (34 W) photonic crystal distributed feedback quantum cascade lasers
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Abstract
We demonstrate room temperature, high power, single mode and diffraction limited operation of a two dimensional photonic crystal distributed feedback (PCDFB) 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 towards realization of spatially and spectrally pure broad area high power quantum cascade lasers.
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B. Gökden, Y. Bai, N. Bandyopadhyay, S. Slivken, and M. Razeghi "High peak power (34 W) photonic crystal distributed feedback quantum cascade lasers", Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 794606 (28 February 2011); https://doi.org/10.1117/12.881397
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