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In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

Article DOI: 10.3791/61175-v • 07:03 min • June 13th, 2020
June 13th, 2020 •
1, 1, 1, 1, 1, 1, 1, 1, 1
1MOE Key Laboratory of Fundamental Physical Quantities Measurement, Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology

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Presented here is a method to measure the birefringence of vacuum windows by maximizing the fluorescence counts emitted by Doppler cooled 25Mg+ ions in an ion trap. The birefringence of vacuum windows will change the polarization states of the laser, which can be compensated by changing the azimuthal angles of external wave plates.

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Vacuum Window Birefringence In-situ Measurement 25Mg+ Fluorescence Polarized Light Vacuum Chamber Cold Atoms Ions Polarization States Polarization Analyzer Wen Hao Yuan Zhi Yu Ma Peng Hao Polarizers Fourth Harmonic Laser Beam Polarizer Holders Power Meter Stepper Motor Rotation Stage Azimuthal Angles
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