Miniaturized optical rotation detection system based on liquid crystal variable retarder in a K-Rb-<sup>21</sup>Ne gyroscope

Xing, Li; Zhai, Yueyang; Fan, Wenfeng; Huang, Jiong; Song, Tianxiao; Ye, Wen; Quan, Wei

doi:10.1364/oe.27.038061

Cited by 27 publications

(5 citation statements)

References 27 publications

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“…Actually, when the intensity of probe beam is greater than 255 mW cm −2 , the long-term stability of our apparatus will become worse based on past experience. Using the same vapor cell for AOM detection method, the optimization of the probe light intensity has been tested using the method of light intensity stabilization without modulation based on a liquid crystal variable retarder [18], as shown in figure 6. The optimal value of the probe light intensity is about 255 mW cm −2 for our system, whose bias instability is minimal.…”

Section: Results Of the Light Intensity Stabilizationmentioning

confidence: 99%

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Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

Xing¹,

Zhai²,

Fu³

et al. 2020

Meas. Sci. Technol.

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A new concept for probe light intensity stability control and high-frequency modulation based on an acousto-optic modulation in a K-Rb-21Ne co-magnetometer is reported. The structure and optical path are ingeniously designed to avoid the interference of zero-order diffraction light. The average rotation rate sensitivity of 7 .9 × 1 0 - 7 rad s − 1 Hz − 1 / 2 is achieved under the light intensity closed-loop control condition and the bias instability calculated by the Allan deviation is improved from 0.13 deg h−1 to 0.06 deg h−1 comparing with open-loop scheme. A square wave modulation with a wide range of frequencies is applied to the probe light intensity and the appropriate modulation frequency for the co-magnetometer is tested to be 10 kHz to 300 kHz and megahertz scale. Finally, the closed-loop control of light intensity has been combined with the high-frequency modulation, which could suppress the low-frequency noise contained in the probe system and improve the long-term stability of the angular velocity measurement.

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Section: Results Of the Light Intensity Stabilizationmentioning

confidence: 99%

“…x along x-axis can be measured by a linearly-polarized probe beam based on circular birefringence [9]. According to [18], there is a linear relationship between the optical rotation angle θ and the electron spin polarization P e…”

Section: Principle and Methodsmentioning

confidence: 99%

Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

Xing¹,

Zhai²,

Fu³

et al. 2020

Meas. Sci. Technol.

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“…Vertical-cavity surface-emitting lasers (VCSELs) are widely acknowledged as having a small volume and low power consumption, which makes them perfect candidates for built-in laser sources of miniaturized OPMs [8] . The successful application of VCSELs in atomic gyroscopes and atomic clocks further proves their feasibility and dominance [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 84%

VCSEL frequency stabilization for optically pumped magnetometers

Yan

Liu

Lin³

et al. 2021

Chin. Opt. Lett.

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“…Due to the suppression of spin exchange relaxation, the SERF comagnetometers have the potential to realize ultra-sensitive measurements and are widely used in charge-parity-time (CPT) violation, Lorenz symmetry experiments [8][9][10], and spin interaction force [11][12][13]. Furthermore, the SERF comagnetometers are also deemed as promising high-precision rotation sensors in long endurance and high precision inertial navigation [14,15].…”

Section: Introductionmentioning

confidence: 99%

Design of real time magnetic field compensation system based on fuzzy PI control algorithm for comagnetometer

Tang¹,

Liu²,

Prado³

et al. 2022

J. Phys. D: Appl. Phys.

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Alkali-metal-noble-gas comagnetometers operating in the spin exchange relaxation free (SERF) regime have been widely used in frontier science research and navigation technology. Under normal circumstances, the comagnetometer operates at the compensation point so that any interfering external magnetic field is tracked and suppressed by the nuclear spin. This in turn can greatly diminish the comagnetometer's sensitivity to the magnetic field; however, its sensitivity to rotations and to anomalous fields is still maintained. The compensation point is typically adjusted manually, which leads to low accuracy and compensation speed, in addition to only allowing short-term magnetic field stability. In order to account for these problems, we designed a three-axis magnetic field compensation system in real time based on LabVIEW, and employed it to a K-Rb-21Ne comagnetometer. Our study shows that by using a fuzzy-proportional-integral (Fuzzy-PI) controller, the compensation point can be tracked in real time and with higher precision when compared with manually adjusted methods, therefore improving the magnetic field stability and sensitivity of the comagnetometer. In addition, the real-time magnetic compensation system can also be widely used in magnetometers.

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Miniaturized optical rotation detection system based on liquid crystal variable retarder in a K-Rb-²¹Ne gyroscope

Cited by 27 publications

References 27 publications

Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

VCSEL frequency stabilization for optically pumped magnetometers

Design of real time magnetic field compensation system based on fuzzy PI control algorithm for comagnetometer

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Miniaturized optical rotation detection system based on liquid crystal variable retarder in a K-Rb-21Ne gyroscope

Cited by 27 publications

References 27 publications

Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

Optical rotation detection method based on acousto-optic modulation in an atomic spin co-magnetometer

VCSEL frequency stabilization for optically pumped magnetometers

Design of real time magnetic field compensation system based on fuzzy PI control algorithm for comagnetometer

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Product

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Miniaturized optical rotation detection system based on liquid crystal variable retarder in a K-Rb-²¹Ne gyroscope