期刊
OPTICS LETTERS
卷 44, 期 22, 页码 5634-5637出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.44.005634
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资金
- Air Force Office of Scientific Research [FA955016-1-0163]
- National Science Foundation [1351455]
- Gwangju Institute of Science and Technology
- Institute for Basic Science [IBS-R012-D1]
- Office of Naval Research [N00014-17-1-2705]
We demonstrate high-energy terahertz generation from a large-aperture (75-mm diameter) lithium niobate wafer by using a femtosecond laser with energy up to 2 J. This scheme utilizes optical rectification in a bulk lithium niobate crystal, where most terahertz energy is emitted from a thin layer of the rear surface. Despite its simple setup, this scheme can yield 0.19 mJ of terahertz energy with laser-to-terahertz conversion efficiences of similar to 40(-4), about 3 times better than ZnTe when pumped at 800 nm. The experimental setup is upscalable for multimillijoule terahertz generation with petawatt laser pumping. (C) 2019 Optical Society of America
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