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Proceedings Paper

High power volume Bragg laser bar with 10 GHz spectral bandwidth
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Paper Abstract

Diode pumped alkali-vapor (cesium, rubidium and potassium) lasers (DPALs) are attractive sources for high-power applications due to their high quantum efficiency, excellent optical beam quality and reduced thermal load. DPALs require optical pump sources that can reliably emit energy within the narrow (about 10 GHz) absorption bands of the alkali vapor. Single laser diodes (LD) and laser bars (LB) integrated into wavelength selective external cavities with volume diffraction gratings can simultaneously achieve narrow linewidths and high output power. A diode laser bar with a volume Bragg grating output coupler emitting at 780 nm has demonstrated a CW output power up to 30 W with a slope efficiency of 0.8 W/A, a spectral width (FWHM) below 10GHz, and a tunability over 400 pm. The output power of a diode bar in an external cavity exceeded 90% of the output power of the free-running bar. More than 90% of the laser emission was absorbed by Rb cell.

Paper Details

Date Published: 14 April 2008
PDF: 5 pages
Proc. SPIE 6952, Laser Source Technology for Defense and Security IV, 69520D (14 April 2008); doi: 10.1117/12.783725
Show Author Affiliations
G. Venus, College of Optics and Photonics, Univ. of Central Florida (United States)
A. Gourevitch, College of Optics and Photonics, Univ. of Central Florida (United States)
V. Smirnov, OptiGrate (United States)
L. Glebov, College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 6952:
Laser Source Technology for Defense and Security IV
Mark Dubinskii; Gary L. Wood, Editor(s)

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