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Proceedings Paper

High-repetition-rate tunable narrowband terahertz-wave generation based on nonlinear frequency conversion pumped by dual fiber lasers in MgO:LiNbO3
Author(s): Yoshio Wada; Takumi Satoh; Yasuhiro Higashi; Yoshiharu Urata
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Paper Abstract

We demonstrate a high-average-power, single-longitudinal-mode, and tunable terahertz-wave (THz-wave) source based on difference frequency generation (DFG) in a MgO:LiNbO3 (MgO:LN) crystal. The DFG waves are generated using a pair of Yb-doped, pulsed fiber lasers with a master oscillator power fiber amplifier configuration. The average power of the THz-wave output reaches 1.35 mW at 1.0 THz (300 μm) at a linewidth of 7.2 GHz, and the tunability ranges from 0.34 to 1.25 THz under a pulse repetition frequency of 500 kHz. With this scheme, we constructed a compact THz-wave generation head for imaging applications. The combination of MgO:LN-DFG and the stable and robust fiber laser sources is highly promising for developing high-average-power THz-wave sources, particularly in the high-transmission sub-THz region. This approach may enable new applications of THz-wave spectroscopy in imaging and remote sensing.

Paper Details

Date Published: 23 February 2018
PDF: 8 pages
Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 1053107 (23 February 2018); doi: 10.1117/12.2287293
Show Author Affiliations
Yoshio Wada, Ricoh Co., Ltd. (Japan)
Takumi Satoh, Ricoh Co., Ltd. (Japan)
Yasuhiro Higashi, Ricoh Co., Ltd. (Japan)
Yoshiharu Urata, PHLUXi, Inc. (Japan)

Published in SPIE Proceedings Vol. 10531:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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