High-peak-power eye-safe orthogonally-polarized dual-wavelength Nd:YLF/KGW Raman laser

An actively Q-switched eye-safe orthogonally-polarized dual-wavelength intracavity Raman laser was demonstrated for the first time, to the best of our knowledge. The gain balanced dual-wavelength operation at 1314 and 1321 nm within an in-band pumped Nd:YLF laser was realized by slightly titling the...

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Veröffentlicht in:Optics express 2020-03, Vol.28 (6), p.8802-8810
Hauptverfasser: Tu, Zhi-Hua, Dai, Shi-Bo, Chen, Meng-Ting, Yin, Hao, Zhu, Si-Qi, Li, Zhen, Ji, Encai, Chen, Zhen-Qiang
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Sprache:eng
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Zusammenfassung:An actively Q-switched eye-safe orthogonally-polarized dual-wavelength intracavity Raman laser was demonstrated for the first time, to the best of our knowledge. The gain balanced dual-wavelength operation at 1314 and 1321 nm within an in-band pumped Nd:YLF laser was realized by slightly titling the cavity mirrors. Owing to the KGW bi-axial properties, two sets of simultaneous orthogonally-polarized dual-wavelength Raman lasers at 1470, 1490 nm and 1461, 1499 nm were achieved by simply rotating the KGW crystal for 90°, respectively. With an incident pump power of 30 W and an optimized pulse repetition frequency of 5 kHz, the maximum dual-wavelength Raman output powers of 2.6 and 2.4 W were obtained with the pulse widths of 5.8 and 6.3 ns, respectively, corresponding to the peak powers up to 89.7 and 76.5 kW.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.390919