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

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

DOI:
10.3791/61175-v

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07:03 min

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June 13, 2020

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, , , , , , , ,
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

Capitoli

  • 00:04Introduction
  • 01:06A and B Polarizer Reference Direction Setup
  • 02:00Waveplate Azimuthal Angles Reference Angle Setup
  • 02:51Single 25Mg+ Ion Doppler Cooling
  • 03:30Doppler Cooling Laser Frequency Wavelength Meter Locking
  • 04:01Laser Intensity Setup
  • 04:33Vacuum Window Birefringence Measurement
  • 04:59Results: Representative Vacuum Window Birefringence Analyses
  • 06:08Conclusion

Summary

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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.

Tags

In-situ MeasurementVacuum Window Birefringence25Mg+ FluorescencePolarization CompensationCold AtomsIon TrapDoppler CoolingMagnesium-25 IonsPolarizerWave PlateLaser BeamVacuum Chamber

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