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High Energy Terahertz Parametric Oscillator Based on Surface-Emitted Configuration

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【作者】 徐德刚； 张昊； 蒋浩； 王与烨； 刘长明； 于红； 李忠洋； 史伟； 姚建铨；

【Author】 XU De-Gang;ZHANG Hao;JIANG Hao;WANG Yu-Ye;LIU Chang-Ming;YU Hong;LI Zhong-Yang;SHI Wei;YAO Jian-Quan;Institute of Laser and Optoelectronics,College of Precision Instrument and Optoelectronics Engineering,Tianjin University;Key Laboratory of Optoelectronics Information Science and Technology(Ministry of Education),Tianjin University;North China University of Water Resources and Electric Power;

【机构】 Institute of Laser and Optoelectronics,College of Precision Instrument and Optoelectronics Engineering,Tianjin University； Key Laboratory of Optoelectronics Information Science and Technology(Ministry of Education),Tianjin University； North China University of Water Resources and Electric Power；

【摘要】 We experimentally demonstrate a high power nanosecond pulsed terahertz（THz）-wave parametric oscillator（TPO） by using a wide pump beam.A surface emitted cavity configuration is employed to reduce the THz absorption in MgO:LiNbO3 crystal.The THz wave can be tuned from 1 THz to 3 THz.A maximum THz output energy of 438nJ/pulse is achieved at 1.56Hz using a 4.5-mm-diameter pump beam with a pulse energy of 226mJ pump energy with the repetition of 10Hz,corresponding to the energy conversion efficiency of 1.94 ×10-6.

【Abstract】 We experimentally demonstrate a high power nanosecond pulsed terahertz（THz）-wave parametric oscillator（TPO） by using a wide pump beam.A surface emitted cavity configuration is employed to reduce the THz absorption in MgO:LiNbO3 crystal.The THz wave can be tuned from 1 THz to 3 THz.A maximum THz output energy of 438nJ/pulse is achieved at 1.56Hz using a 4.5-mm-diameter pump beam with a pulse energy of 226mJ pump energy with the repetition of 10Hz,corresponding to the energy conversion efficiency of 1.94 ×10-6.

【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 61107086,61172010 and 61101058;Science and Technology Committee of TianJin(No 11JCYBJC01100);the National High Technology Research and Development Program of China(No 2011AA010205);the Open-Fund of the Key Laboratory of Opto-electronic Information Technology(Ministry of Education)at Tianjin University
  • 【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2013年02期
  • 【分类号】O437.4
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