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Terahertz generation based on four-wave mixing difference frequency by resonance-enhanced third-order nonlinear of media

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Abstract

Using nanosecond pulse near-infrared and mid-infrared laser pulses as the pump source, we obtain terahertz wave sources via four-wave difference frequency mixing. From the coupled wave theory, we analyze the four-wave mixing process of GaSe crystal and alkali metal vapor in detail, get the analytical expression of terahertz wave output power, and discuss the conditions for achieving phase matching. By adjusting the pump frequency, the third-order nonlinear polarization of alkali metal vapor is resonance-enhanced. This program offers a new type of high-power terahertz radiation source.

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Authors and Affiliations

  1. Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education of China, Institute of Lasers and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, TianJin University, TianJin, 300072, China

    Shao-hua Zhang  (张少华), Jian-quan Yao  (姚建铨), Rui Zhou  (周睿), Wu-qi Wen  (温午麒), De-gang Xu  (徐德刚) & Peng Wang  (王鹏)

Authors
  1. Shao-hua Zhang  (张少华)
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  2. Jian-quan Yao  (姚建铨)
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  3. Rui Zhou  (周睿)
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  4. Wu-qi Wen  (温午麒)
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  5. De-gang Xu  (徐德刚)
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  6. Peng Wang  (王鹏)
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Corresponding author

Correspondence to Shao-hua Zhang  (张少华).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.60801017), the Tianjin Municipal Primary Application and Frontier Technology Research Plan (No.11JCYBJC01100), and the Key Technology Research and Development Program of Tianjin (No.09ZC KFSF00200).

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Zhang, Sh., Yao, Jq., Zhou, R. et al. Terahertz generation based on four-wave mixing difference frequency by resonance-enhanced third-order nonlinear of media. Optoelectron. Lett. 7, 415–418 (2011). https://doi.org/10.1007/s11801-011-1099-3

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  • DOI: https://doi.org/10.1007/s11801-011-1099-3

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