Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 62, Issue SA, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1347-4065/ac91db
Keywords
nitrogen; electric field measurement; E-CARSv
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This study demonstrated the generation of E-CARSv using visible and infrared lasers, and showed that the square root of the signal intensity was proportional to the external electric field strength. E-CARSv can be applied in various media containing nitrogen molecules.
Electric-field-induced anti-Stokes Raman scattering in the visible region (E-CARSv) is a third-order nonlinear optical effect used for measuring electric field sensitively, especially at atmospheric or higher pressure. This study demonstrated E-CARSv generation from nitrogen molecules using a visible laser at 532 nm, a tunable infrared laser at approximately 4.3 mu m, and an applied DC electric field. The results revealed that the square root of the signal intensity was proportional to the external electric field strength, which corresponded with the theoretical prediction. E-CARSv can be applied to a wide range of mediums containing nitrogen molecules, including plasmas generated in an open-air environment.
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