High-Efficiency External Cavity Spectral-Beam-Combined Diode Laser Array

Hangyu, 彭航宇 Peng; Jun, 张军 Zhang; Xihong, 付喜宏 Fu; Junsheng, 曹军胜 Cao; Biao, 王彪 Wang

doi:10.3788/cjl201340.0702015

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“…Spectral beam combining (SBC) has been proven to be an effective way for improving the beam quality of a high power diode laser source [1][2][3][4][5]. Previously, 970 nm and 800 nm diode laser sources by SBC with -1st order transmission grating (T-SBC) have been demonstrated [6,7]. However, for the SBC source, the improved beam quality comes at the expense of increased spectral width, leading to a spectrum span of up to several tens of nanometers.…”

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confidence: 99%

Hundred-watt diode laser source by spectral beam combining

et al. 2014

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A diode laser source with a continuous wavelength (CW) power of 106 W and the beam quality M 2 of 14.6 is demonstrated by spectrum beam combining (SBC) of three 800 nm LDAs. With the help of relay optics, a wavelength interval of 0.21 nm and a whole spectrum span of 13.9 nm are achieved, which is almost 10 times narrower than those of the structure without the relay optics. This presents a method to obtain a high power and high beam quality SBC laser source with a narrow spectrum.

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