Widely Tunable THz-Wave Generation by Nonlinear Optics
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概要
- 論文の詳細を見る
Widely tunable coherent terahertz (THz)-wave generation was successfully demonstrated based on the laser light scattering from the lowest A_1-symmetry polariton mode by using a Q-switched Nd:YAG laset pumping. This method exhibits multiple advantages like wide tunability (frequency: 0.9-2.2THz), coherency and compactness of its system. In this paper, the general performances of this THz-wave generator, as well as the recent development of the system and its application are reported. Measurements of tunability, coherency, power, polarization, radiation angle, and divergence are shown. The cryogenic cooling of the crystal was performed in addition, and a more than one hundred times higher THz-wave output was observed. A spectroscopic application of our wave source is demonstrated by measuring the water vapor absorption.
- 社団法人電子情報通信学会の論文
- 1998-02-25
著者
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ITO Hiromasa
Research Institute ofElectrical Communication, Tohoku University
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Shikata Jun-ichi
Research Institute Of Electrical Communication Tohoku University
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Kawase K
Riken Wako‐shi Jpn
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Ito Hiromasa
Research Institute Of Electrical Communication Tohoku University
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Ito Hiromasa
Photo Dynamics Research Center Riken:research Institute Of Electrical Communication Tohoku Universit
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KAWASE Kodo
Research Institute of Electrical Communication, Tohoku University
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