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Applied Physics Letters / Volume 97 / Issue 5 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 97, 051106 (2010); http://dx.doi.org/10.1063/1.3473780 (3 pages)

Light induced tuning of quantum cascade lasers

B. Basnar1, E. Mujagic1, A. M. Andrews1, T. Roch2, W. Schrenk1, and G. Strasser1,3

1Center for Micro- and Nanostructures, Vienna University of Technology, A-1040 Vienna, Austria
2Department of Experimental Physics, Comenius University, 84248 Bratislava, Slovakia
3Departments of Electrical Engineering and Physics, The State University at Buffalo, Buffalo, New York 14260-1920, USA

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(Received 25 June 2010; accepted 8 July 2010; published online 3 August 2010)

A method for tuning the emission of a midinfrared quantum cascade laser using ultraviolet light is presented. The method uses a quantum cascade laser where a photochromic material is deposited as the top waveguide cladding. Changing the state of the cladding causes variations in the absorbance of the cladding. Wavelength dependent changes in the waveguide losses occur, forcing the laser to emit at a wavelength correlated with an absorbance minimum of the cladding. A blueshift by about 6 cm−1 was obtained at room temperature under UV irradiation which was fully reversed by exposure to visible light or room temperature relaxation.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

laser tuning, photochromism, quantum cascade lasers

PACS

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 42.60.By

    Design of specific laser systems

  • 42.60.Fc

    Modulation, tuning, and mode locking

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3473780

PUBLICATION DATA

ISSN

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

Publisher

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

For access to fully linked references, you need to log in.
    J. Faist, C. Gmachl, F. Capasso, C. Sirtori, D. L. Sivco, J. N. Baillargeon, and A. Y. Cho, Appl. Phys. Lett. 70, 2670 (1997)APPLAB000070000020002670000001.

    S. Song, S. S. Howard, Z. Liu, A. O. Dirisu, C. F. Gmachl, and C. B. Arnold, Appl. Phys. Lett. 89, 041115 (2006)APPLAB000089000004041115000001.

    R. Maulini, A. Mohan, M. Giovannini, J. Faist, and E. Gini, Appl. Phys. Lett. 88, 201113 (2006)APPLAB000088000020201113000001.


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