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Broadband terahertz light source pumped by a 1 μm picosecond laser

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Abstract

We obtained a frequency tunable, low-coherence, picosecond, terahertz (THz) output with a high repetition rate from a picosecond Nd:YVO4 bounce laser in combination with tandem periodically poled stoichiometric lithium tantalate and 4′-dimethylamino-N-methyl-4-stilbazolium tosylate crystals. The frequency of the THz output was tunable in the range 2.1–7.1 THz with a linewidth of ~3.5 THz at 2.2 THz. The THz output had a maximum peak power of ~180 mW and an average power of ~0.65 μW at 3.9 THz. This system has the potential to realize ultra-high speed, THz coherence tomography.

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Acknowledgments

The authors thank Prof. Dr. H. Ito of RIKEN for his valuable assistance with the DAST crystal and Dr. Seigo Ohno of Tohoku University for fruitful discussions and suggestions. The authors are also funded by Industry-Academia Collaborative R&D from Japan Science and Technology Agency, JST.

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Authors and Affiliations

  1. Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan

    Katsuhiko Miyamoto, Takefumi Saito & Takashige Omatsu

  2. MQ Photonics Research Centre, Department of Physics and Astronomy, Macquarie University, Sydney, NSW, 2109, Australia

    Andrew Lee

  3. Department of Electrical, Electronics and Computer Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba, 275-0016, Japan

    Takuya Akiba & Koji Suizu

  4. Japan Science and Technology Agency, CREST, 5 Sanbancho, Chiyoda-ku, Tokyo, 102-0075, Japan

    Takashige Omatsu

Authors
  1. Katsuhiko Miyamoto
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  2. Andrew Lee
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  3. Takefumi Saito
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Correspondence to Katsuhiko Miyamoto.

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Miyamoto, K., Lee, A., Saito, T. et al. Broadband terahertz light source pumped by a 1 μm picosecond laser. Appl. Phys. B 110, 321–326 (2013). https://doi.org/10.1007/s00340-013-5359-8

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  • DOI: https://doi.org/10.1007/s00340-013-5359-8

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