Wavelength beam combining of laser diode array by wavelength-chirped volume Bragg grating external cavity

liu bo; zhang xue; han jun-ting; hui yong-ling; jiang meng-hua; li qiang

Volume 20 Issue 07

Jul. 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(07): 0-

lou li-fei, yang yin-tang, chai chang-chun, et al. Total dose radiation effect on PZT ferroelectric material[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

liu bo, zhang xue, han jun-ting, et al. Wavelength beam combining of laser diode array by wavelength-chirped volume Bragg grating external cavity[J]. High Power Laser and Particle Beams, 2008, 20.

lou li-fei, yang yin-tang, chai chang-chun, et al. Total dose radiation effect on PZT ferroelectric material[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

liu bo, zhang xue, han jun-ting, et al. Wavelength beam combining of laser diode array by wavelength-chirped volume Bragg grating external cavity[J]. High Power Laser and Particle Beams, 2008, 20.

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Wavelength beam combining of laser diode array by wavelength-chirped volume Bragg grating external cavity

1.
College of Laser Engineering,Beijing University of Technology,Beijing 100022,China

Publish Date: 2008-07-15

Abstract

Abstract

With an external cavity containing a wavelength-chirped volume Bragg grating, multi-wavelength beam combining is realized with a standard bar of 49 emitters. The width of the emitter is 100 μm, and the fill factor is 0.5. Beam quality factor of 6 for both the fast axis and the slow axis is achieved at CW operating, and a nearly round output spot of high intensity with a peak power of 11.2 W is gotten. The efficiency at the maximum operating current is about 30%. An efficiency of 64% at maximum working current is proven in a more detailed experimental study. The technical advantages and possible applications are discussed.
- wavelength-chirped volume bragg grating,
- diode laser array,
- wavelength beam combining,
- diffraction grating

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