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Proceedings Paper

Coherent terahertz-wave generation and detection over a wide frequency range using DAST crystals
Author(s): Hiroaki Minamide; Hiromasa Ito
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Paper Abstract

Terahertz-frequency (THz) waves have shown potential for a wide range of applications. We have developed tunable THz-wave sources using nonlinear optical crystals, which have several advantages, including frequency agility, wide tunability, high output, and high coherency. We found that the organic nonlinear crystal of 4-dimethylamino-N-methyl-4-stilbazolium-tosylate (DAST) had particular potential for ultra-wide THz-wave generation from sub-THz to mid-infrared frequencies. Using DAST, we manufactured a coherent, tunable source (1-40 THz) with frequency agility. Moreover, we demonstrated THz-wave detection through up-conversion using DAST or MgO:LiNbO3 nonlinear optical crystals, which provided a fast response, high sensitivity, and room-temperature operation.

Paper Details

Date Published: 24 February 2009
PDF: 8 pages
Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 71970C (24 February 2009); doi: 10.1117/12.808618
Show Author Affiliations
Hiroaki Minamide, RIKEN Sendai (Japan)
Hiromasa Ito, RIKEN Sendai (Japan)
Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 7197:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII
Peter E. Powers, Editor(s)

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