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Applied Physics Letters / Volume 101 / Issue 8 / PHOTONICS AND OPTOELECTRONICS

Appl. Phys. Lett. 101, 081106 (2012); http://dx.doi.org/10.1063/1.4747447 (5 pages)

Angled cavity broad area quantum cascade lasers

Y. Bai, S. Slivken, Q. Y. Lu, N. Bandyopadhyay, and M. Razeghi

Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, USA

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(Received 16 July 2012; accepted 7 August 2012; published online 21 August 2012)

Angled cavity broad area quantum cascade lasers (QCLs) are investigated with surface grating-based distributed feedback (DFB) mechanisms. It is found that an angled cavity incorporating a one dimensional DFB with grating lines parallel to the laser facet offers the simplest solution for single mode and diffraction limited emission in the facet normal direction. A room temperature single mode QCL with the highest output power for wavelengths longer than 10 μm is demonstrated. This structure could be applied to a wide range of laser structures for power scaling along with spectral and spatial beam control.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

distributed feedback lasers, Fabry-Perot resonators, laser beams, laser modes, quantum cascade lasers

PACS

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 42.60.By

    Design of specific laser systems

  • 42.60.Jf

    Beam characteristics: profile, intensity, and power; spatial pattern formation

International Patent Classification (IPC)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.4747447

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    Y. Bai, N. Bandyopadhyay, S. Tsao, S. Slivken, and M. Razeghi, Appl. Phys. Lett. 98, 181102 (2011)APPLAB000098000018181102000001.

    Y. Bai, S. Slivken, S. R. Darvish, A. Haddadi, B. Gokden, and M. Razeghi, Appl. Phys. Lett. 95, 221104 (2009)APPLAB000095000022221104000001.

    Y. Bai, S. R. Darvish, S. Slivken, P. Sung, J. Nguyen, A. Evans, W. Zhang, and M. Razeghi, Appl. Phys. Lett. 91, 141123 (2007)APPLAB000091000014141123000001.

    Q. Y. Lu, W. H. Guo, W. Zhang, L. J. Wang, J. Q. Liu, L. Li, F. Q. Liu, and Z. G. Wang, Appl. Phys. Lett. 96, 051112 (2010)APPLAB000096000005051112000001.

    B. Gökden, Y. Bai, N. Bandyopadhyay, S. Slivken, and M. Razeghi, Appl. Phys. Lett. 97, 131112 (2010)APPLAB000097000013131112000001.

    Q. Y. Lu, Y. Bai, N. Bandyopadhyay, S. Slivken, and M. Razeghi, Appl. Phys. Lett. 97, 231119 (2010)APPLAB000097000023231119000001.

    Q. Y. Lu, Y. Bai, N. Bandyopadhyay, S. Slivken, and M. Razeghi, Appl. Phys. Lett. 98, 181106 (2011)APPLAB000098000018181106000001.

    R. E. Bartolo, W. W. Bewley, I. Vurgaftman, C. L. Felix, J. R. Meyer, and M. J. Yang, Appl. Phys. Lett. 76, 3164 (2000)APPLAB000076000022003164000001.

    Q. Y. Lu, N. Bandyopadhyay, S. Slivken, Y. Bai, and M. Razeghi, Appl. Phys. Lett. 99, 131106 (2011)APPLAB000099000013131106000001.


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