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Highly efficient oscillator for an optically pumped 192-μm far-infrared laser

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Abstract

We demonstrate an efficient CH3F oscillator based on an anti-reflection coated Ge dichroic beam splitter. When pumped by the 10R32 line of a CO2 laser (10.17 μm), 0.81-mJ far-infrared laser is obtained with the wavelength of 192 μm. The energy conversion efficiency of 0.16 % is the highest for an optically pumped 192-μm laser system to our knowledge. The beam quality factor of \(M_{x}^{2}\) and \(M_{y}^{2}\) is 1.53 and 1.57, respectively. Further, this oscillator can be extended to optically pumped far-infrared lasers with various wavelengths.

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Acknowledgments

This work is supported by Fundamental Research Funds for the Central Universities (Grant No HIT. NSRIF. 2014043).

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Authors and Affiliations

  1. National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, 150001, China

    Chuang Liu, Yanchen Qu, Weijiang Zhao & Ruiliang Zhang

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  1. Chuang Liu
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  2. Yanchen Qu
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  3. Weijiang Zhao
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Correspondence to Yanchen Qu.

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Liu, C., Qu, Y., Zhao, W. et al. Highly efficient oscillator for an optically pumped 192-μm far-infrared laser. Appl. Phys. B 122, 35 (2016). https://doi.org/10.1007/s00340-016-6338-7

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