| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Energy Scaling of Terahertz Pulses Produced through Difference Frequency Generation |
| Ya Bai1, Li-Wei Song1, Peng Liu1,2**, Ru-Xin Li1,2 |
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240
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| Cite this article: |
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Ya Bai, Li-Wei Song, Peng Liu et al 2017 Chin. Phys. Lett. 34 014201 |
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Abstract We study the energy scaling of terahertz (THz) emission through difference frequency generation of near-infrared pulses, and demonstrate that Gigawatt few-cycle THz transients at the central frequency of 30 THz are produced from GaSe crystal pumped by two pulses at 1.65 and 1.95 micrometers, with the high quantum yield of 28%. Our analysis indicates that the high yield of DFG originates from the largely reduced group velocity mismatch as the long-wavelength pumping pulses are employed.
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Received: 05 August 2016
Published: 29 December 2016
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| PACS: |
42.72.Ai
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(Infrared sources)
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42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11274326, 61221064, 61405222, 11134010 and 11127901, and the Shanghai Sailing Program under Grant No 14YF1406200. |
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