Journal
OPTICS EXPRESS
Volume 24, Issue 13, Pages 14828-14835Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.24.014828
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Funding
- National Key Basic Research Program of China [2015CB755405]
- National Natural Science Foundation of China [61427814]
- Foundation of President of China Academy of Engineering Physics [201501033]
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A cylindrical lens telescope tilted-pulse-front pumping scheme was proposed for high energy terahertz (THz) pulse generation. This scheme allows higher pump energy to be used with lower saturation effects under high pump fluence, and higher THz generation efficiency was achieved within large range of pump energy. The optimum pump pulse duration and crystal cooling temperature for THz generation in LiNbO3 (LN) crystal were also researched systematically. Excited by 800-nm laser, up to 0.19 mJ THz pulse energy and 0.27% conversion efficiency was demonstrated under 800-nm 400-fs laser excitation with similar to 100-mJ pulse energy and 150-K LN cooling temperature. (C) 2016 Optical Society of America
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