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Theoretical research on cascaded terahertz difference-frequency generation based on sphalerite crystals

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Abstract

A theoretical model of cascaded terahertz (THz) difference-frequency generation is established based on one-dimensional coupled-wave equations. The relationships between sphalerite crystals’ wave vector mismatches and difference-frequency pump waves are analyzed. To produce terahertz wave with the frequency of 1.5 THz, 80-order cascaded difference-frequency is applied. By introducing crystal absorption, we calculate the optimum crystal length and pump frequency under actual circumstances. It is found that Stokes waves dominate the terahertz waves output in cascaded progress, and cascaded difference-frequency can increase the photon conversion efficiency obviously.

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Authors and Affiliations

  1. Department of Computer Science and Technology, Renai College of Tianjin University, Tianjin, 301636, China

    Jing-hui Li  (李敬辉) & Jian-quan Yao  (姚建铨)

  2. Key Laboratory on Optoelectronics Information Technology, Ministry of Education, Tianjin University, Tianjin, 300072, China

    Xi-fu Li  (李喜福) & Mayilamu Musideke

  3. College of Science, Shandong Universing of Science and Technology, Qingdao, 266510, China

    Hui-yun Zhang  (张会云) & Yu-ping Zhang  (张玉萍)

Authors
  1. Jing-hui Li  (李敬辉)
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  2. Xi-fu Li  (李喜福)
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  3. Hui-yun Zhang  (张会云)
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  4. Yu-ping Zhang  (张玉萍)
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  5. Mayilamu Musideke
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  6. Jian-quan Yao  (姚建铨)
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Corresponding author

Correspondence to Jing-hui Li  (李敬辉).

Additional information

This work has been supported by National “863” Project (No.2011AA030208).

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Li, Jh., Li, Xf., Zhang, Hy. et al. Theoretical research on cascaded terahertz difference-frequency generation based on sphalerite crystals. Optoelectron. Lett. 8, 389–392 (2012). https://doi.org/10.1007/s11801-012-2236-3

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  • DOI: https://doi.org/10.1007/s11801-012-2236-3

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