Design and characterization of a thermally stabilized fiber Fabry–Perot etalon as a wavelength calibrator for high-precision spectroscopy
| Autor: | Huiqi Ye, Jun Hao, Dong Xiao, Liang Tang, Ruyi Wei |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Optical fiber Temperature control Physics::Instrumentation and Detectors business.industry Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Core (optical fiber) Wavelength symbols.namesake Finesse Optics law 0103 physical sciences Calibration symbols Electrical and Electronic Engineering business Engineering (miscellaneous) Doppler effect Fabry–Pérot interferometer |
| Zdroj: | Applied Optics. 60:D1 |
| ISSN: | 2155-3165 1559-128X |
| DOI: | 10.1364/ao.417586 |
| Popis: | Filtering light from a broadband source with a Fabry–Perot etalon generates comb-like peaks in the spectral domain that can serve as calibration reference for precise Doppler shift detection on astronomical spectrographs. Fiber Fabry–Perot etalons are small in size and easily aligned optically. In application, high thermal sensitivity of the fiber core material requires a highly stable temperature control system. Here, we report on the design, characterization, and thermal performance of a fiber Fabry–Perot etalon-based calibrator system insensitive to environmental temperature perturbation, aimed as a reference for m ⋅ s − 1 precision radial velocity measurements. A fast and simple method to estimate the etalon finesse and a dual-loop approach to achieve sub-millikelvin temperature fluctuation are proposed and demonstrated. |
| Databáze: | OpenAIRE |
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