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An Efficient High-energy Pulsed NH3 Terahertz Laser

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Abstract

Experimental studies on an efficient high-energy pulsed NH3 terahertz (THz) laser pumped by a TEA CO2 laser are presented. Pulsed THz radiation of 204 mJ with a wavelength of 151.5 μm was generated from an ammonia laser pumped by a 32 J TEA CO2 laser tuned to the 10P(32) transition, and the photon conversion efficiency of 18% was achieved, in which the pulsed energy was measured by pyroelectric detectors. Meanwhile, the THz transmittance was measured and compared for 5 kinds of materials. Finally, regarding the THz transmittance of these materials, a phenomenon for ammonia radiations with 91 μm and 152 μm pumped by a 9R(14) line was observed: i.e. while the 152 μm THz radiation can win in competition for gain at lower pressure, the 91 μm THz radiation in contrast can prevail at higher pressure.

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Acknowledgements

This work was supported by Creative Foundation of Wuhan National Laboratory for Optoelectronics (No. Z080007) of P. R. C.

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Authors and Affiliations

  1. Department of Mathematics and Physics, Wuhan Polytechnic University, Wuhan, 430023, China

    Zhi-Xian Jiu

  2. Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

    Du-Luo Zuo, Liang Miao & Zu-Hai Cheng

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  1. Zhi-Xian Jiu
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  2. Du-Luo Zuo
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  3. Liang Miao
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  4. Zu-Hai Cheng
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Correspondence to Zhi-Xian Jiu.

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Jiu, ZX., Zuo, DL., Miao, L. et al. An Efficient High-energy Pulsed NH3 Terahertz Laser. J Infrared Milli Terahz Waves 31, 1422–1426 (2010). https://doi.org/10.1007/s10762-010-9733-x

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  • DOI: https://doi.org/10.1007/s10762-010-9733-x

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