15 February 2012 Coherent quasi-CW 153-nm light source at high repetition rate
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We present a quasi-cw laser in vacuum ultraviolet region at megahertz repetition rate. The narrowband pulses generated from an ytterbium-fiber laser system at 33 MHz repetition rate at the central wavelength of 1074 nm is frequency-converted by successive stages of LBO crystals and KBBF crystals. The generated radiation at 153 nm has the shortest wavelength achieved through phase-matched frequency conversion processes in nonlinear optical crystals to our knowledge.
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Yutaka Nomura, Yoshiaki Ito, Akira Ozawa, Xiaoyang Wang, Chuangtian Chen, Shik Shin, Shuntaro Watanabe, Yohei Kobayashi, "Coherent quasi-CW 153-nm light source at high repetition rate", Proc. SPIE 8240, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XI, 82400H (15 February 2012); doi: 10.1117/12.910254; https://doi.org/10.1117/12.910254

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