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Applied Physics Letters / Volume 94 / Issue 16 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 94, 161102 (2009); http://dx.doi.org/10.1063/1.3123813 (3 pages)

Widely tunable distributed-feedback lasers with chirped gratings

Liang Xue1, S. R. J. Brueck1, and R. Kaspi2

1Department of Electrical and Computer Engineering and Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA
2Air Force Research Laboratory, Directed Energy Directorate, Kirtland Air Force Base, Albuquerque, New Mexico 87117, USA

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(Received 16 February 2009; accepted 2 April 2009; published online 20 April 2009)

A quasicontinuous tuning range of 65 nm at 3.2 μm was obtained for continuous wave, single-longitudinal-mode operation at 77 K of an optically pumped distributed-feedback laser with a chirped grating. Interferometric lithography with spherical wavefronts was used to fabricate a large-area chirped grating whose period varied continuously in the direction of the grating lines. Tuning was achieved by translating the optical pump stripe relative to the device to activate regions with different grating periods. Methane absorption spectra, obtained using this tunable distributed-feedback laser, closely match the high-resolution transmission molecular absorption database simulations.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

chirp modulation, diffraction gratings, distributed feedback lasers, laser modes, laser tuning, optical pumping, semiconductor lasers

PACS

  • 42.55.Px

    Semiconductor lasers; laser diodes

  • 42.60.By

    Design of specific laser systems

  • 42.79.Dj

    Gratings

  • 42.65.Re

    Ultrafast processes; optical pulse generation and pulse compression

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3123813

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. S. Yu, S. Slivken, S. R. Darvish, A. Evans, B. Gokden, and M. Razeghi, Appl. Phys. Lett. 87, 041104 (2005)APPLAB000087000004041104000001.

    R. Kaspi, A. P. Ongstad, G. C. Dente, J. R. Chavez, M. L. Tilton, and D. M. Gianardi, Appl. Phys. Lett. 88, 041122 (2006)APPLAB000088000004041122000001.


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