Coherent terahertz-wave generation and detection over a wide frequency range using DAST crystals

Hiroaki Minamide; Hiromasa Ito

doi:10.1117/12.808618

23 February 2009 Coherent terahertz-wave generation and detection over a wide frequency range using DAST crystals

Hiroaki Minamide, Hiromasa Ito

Proceedings Volume 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII; 71970C (2009) https://doi.org/10.1117/12.808618
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

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.

Citation Download Citation

Hiroaki Minamide and Hiromasa Ito "Coherent terahertz-wave generation and detection over a wide frequency range using DAST crystals", Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 71970C (23 February 2009); https://doi.org/10.1117/12.808618

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