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An Optically Pumped Far-Infrared Folded Mirror-Less Cavity

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Abstract

A compact and efficient mirror-less cavity is presented for an optically pumped 192-μm far-infrared laser. With a gold-coated mirror and 30°-inclined anti-reflection coated Ge plate serving as highly reflective mirrors, a folded mirror-less CH3F cavity is achieved. Maximum energy of 0.72 mJ is obtained with the pump energy of 600 mJ, which gives an energy increment of 75% in comparison with the previous 1.85-m mirror-less system. The beam divergence angle of the FIR radiation from this folded mirror-less cavity is measured to be 14.2 mrad.

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Acknowledgements

This work is supported by the Science and Technology Project of Jilin Province (No. 20150623024TC-07), the Foundation for Young Scientists of Jilin Province (No. 20170520161JH), and the Foundation of Jilin Educational Committee (No. 2015-77).

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Authors and Affiliations

  1. National & Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science & Technology, Changchun, 130022, China

    Chuang Liu, Dashuai Wang & Peng Zhang

  2. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, 150080, China

    Yanchen Qu

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  1. Chuang Liu
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  2. Dashuai Wang
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  3. Peng Zhang
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  4. Yanchen Qu
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Correspondence to Chuang Liu.

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Liu, C., Wang, D., Zhang, P. et al. An Optically Pumped Far-Infrared Folded Mirror-Less Cavity. J Infrared Milli Terahz Waves 38, 1433–1438 (2017). https://doi.org/10.1007/s10762-017-0427-5

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  • DOI: https://doi.org/10.1007/s10762-017-0427-5

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