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.
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.
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.
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.
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.
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