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Photonic crystal distributed feedback quantum cascade lasers with 12 W output power

Appl. Phys. Lett. 95, 031105 (2009); doi:10.1063/1.3182567

Published 21 July 2009

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Y. Bai, B. Gokden, S. R. Darvish, S. Slivken, and M. Razeghi
Department of Electrical Engineering and Computer Science, Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208, USA
We demonstrate room temperature, high power, and diffraction limited operation of photonic crystal distributed feedback (PCDFB) quantum cascade lasers emitting around 4.7  µm. PCDFB gratings with three distinctive periods are fabricated on the same wafer. Peak output power up to 12 W is demonstrated. Lasers with different periods show expected wavelength shifts according to the design. Dual mode spectra are attributed to a purer index coupling by putting the grating layer 100 nm away from the laser core. Single lobed diffraction limited far field profiles are observed. ©2009 American Institute of Physics
History: Received 2 June 2009; accepted 25 June 2009; published 21 July 2009
Permalink: http://link.aip.org/link/?APPLAB/95/031105/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • 42.60.By
    Design of specific laser systems
  • 42.70.Qs
    Photonic bandgap materials
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
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REFERENCES (9)
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  2. A. Lyakh, C. Pflugl, L. Diehl, Q. J. Wang, F. Capasso, X. J. Wang, J. Y. Fan, T. Tanbun-Ek, R. Maulini, A. Tsekoun, R. Go, and C. K. N. Patel, Appl. Phys. Lett. 92, 111110 (2008).
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