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
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.
(Ultrafast processes; optical pulse generation and pulse compression)
引用本文:
. [J]. 中国物理快报, 2017, 34(1): 14201-014201.
Ya Bai, Li-Wei Song, Peng Liu, Ru-Xin Li. Energy Scaling of Terahertz Pulses Produced through Difference Frequency Generation. Chin. Phys. Lett., 2017, 34(1): 14201-014201.
McLean T P 1977 Linear and Non-linear Optics of Condensed Matter, Interaction of Radiation with Condensed Matter vol 1 (Vienna: International Atomic Energy Agency)
2017, Vol. 34 
