Characterization of Organic nonlinear optical crystals for THz applications

This work evaluated the effects of humidity and temperature on organic nonlinear optical crystals. To assess the effect of humidity, we compared THz wave generation before and after exposure to a temperature of 30^{\circ}\mathrm{C} and a humidity of 80 % for 10 weeks. THz wave output decreased for t...

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Published in2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) pp. 1 - 2
Main Authors Uchida, Hirohisa, Koyama, Chisa, Hayase, Kohei, Murate, Kosuke, Kawase, Kodo, Takeya, Kei
Format Conference Proceeding
LanguageEnglish
Published IEEE 17.09.2023
Subjects
Crystals
Electo-optic effects
Fluctuations
Humidity
Nonlinear optics
Temperature
Temperature dependence
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Summary:This work evaluated the effects of humidity and temperature on organic nonlinear optical crystals. To assess the effect of humidity, we compared THz wave generation before and after exposure to a temperature of 30^{\circ}\mathrm{C} and a humidity of 80 % for 10 weeks. THz wave output decreased for the DAST crystal but not for the DASC or OH1 crystals. Regarding the effect of temperature, we evaluated the temperature dependence on the electro-optic (EO) effect. When evaluated using one DAST crystal, the EO signal changed periodically with temperature fluctuations. In comparison, when the a-axes of the two DAST crystals were orthogonal, the EO signal did not fluctuate. These results show that the properties of organic nonlinear optical crystals need to be understood and optimized.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz57677.2023.10298967