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Continuous Tunable Cavity Fabry-Perot Interferometer by Using Potassium Dideuterium Phosphate With Two Ring Electrodes

Jun Wang, Meng Yuan, Ning Chen, Tiantian He, Jingjing Liu, Qing Yan, Tingyao He, Li Wang, Wenhui Xin, Dengxin Hua

Appl Opt. 2019 Jun 1;58(16):4425-4430.

PMID: 31251253

Abstract:

In order to perform hyperspectral remote sensing, we present a continuous tunable cavity Fabry-Perot interferometer (FPI) by using potassium dideuterium phosphate (DKDP) with two ring electrodes. DKDP has the good performances of high transmittance in the ultraviolet band and large aperture of 20 mm (the maximum aperture can be 100 mm). Since the resonant frequency of an FPI can be continuously varied with the refractive index change of DKDP caused by the electro-optic effect, the influence of moving parts on resonant frequency can be eliminated. Digital holographic interferometry based on a Mach-Zehnder interferometer is employed to measure the refractive index modulation of DKDP. The parameters of FPI are characterized by using an experimental setup with frequency locking and temperature control technologies. Taking the temperature-measuring high-spectral-resolution lidar based on Rayleigh-Brillouin scattering as an example, a continuous tunable cavity FPI with the full width at half-maximum of 200 MHz and free spectral range of 11.12 GHz is realized. The results are in good agreement with the designed parameters.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP13761790 Potassium dideuterium phosphate Potassium dideuterium phosphate 13761-79-0 Price
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