Laser power stabilization for the detection of the populations of the atomic double levels in Cs fountain clock

Li, Rui; Liu, Dandan; Ruan, Jun; Zhao, Wei; Wang, Xin-Liang; Jiang, Chen; Guan, Yunxia; Zhang, Hui; Yu, Fengxiang; Shi, Junru; Zhang, Shougang

doi:10.1109/fcs.2014.6859956

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…Stable laser powers are needed in a wide range of applications such as laser writing systems 1 , magnetometers 2 , atomic clocks [3][4][5] , spectroscopy [6][7][8][9] , laser frequency standards, interferometry and gravitational wave detection 10,11 , etc. High frequency fluctuations of laser power decreases the signal-to-noise ratio, degrading the short-term frequency stability of frequency standards 5 , or can distort line-shapes in frequency modulation spectroscopy 7 .…”

Section: Introductionmentioning

confidence: 99%

“…Aside from passive isolation 12 , the optical power can be stabilized by a feedback on the diode current (at the expense of the frequency stability) or temperature 13 . Most often an external actuator is used for this purpose, like an electro-optic modulator 14,15 , a photo-elastic modulator 2 , or an acousto-optic modulator (AOM) 1,3,[8][9][10][11]16,17 . A great deal of work has been devoted for decades to the AC power stabilization of Nd:YAG lasers for gravitational wave detectors.…”

Section: Introductionmentioning

confidence: 99%

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Power stabilization of a diode laser with an acousto-optic modulator

Tricot

Phung

Lours

et al. 2018

Review of Scientific Instruments

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Laser power fluctuations can significantly reduce the device performances in various applications. High frequency fluctuations impact the signal-to-noise ratio, while slow variations can reduce the device repeatability or accuracy. Here we report experimental investigations on the power stabilization of a diode laser with an acousto-optic modulator. In the frequency domain, the relative power noise is reduced at the level of 2.2 × 10−8 Hz−1/2 in the range 1-100 kHz. The slow variations are studied in the time domain. The relative Allan standard deviation is measured at the level of 6 × 10−7 at 100 s averaging time. Above 100 s, the instability increases and reaches 2 × 10−6 at 10 000 s.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Power stabilization of a diode laser with an acousto-optic modulator

Tricot

Phung

Lours

et al. 2018

Review of Scientific Instruments

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“…The AOM2 operates at a frequency of 160 MHz, which can be changed to 168 MHz in detection phase. We set AOM7 behind the slave laser 3 in order to stabilize the power of the detection [8]. The third master beam is divided into two parts.…”

Section: B Optical Table Descriptionmentioning

confidence: 99%

The optical system of the fountain clock

Wang

Ruan

Zhang

et al. 2014

2014 IEEE International Frequency Control Symposium (FCS)

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“…Recently, the acousto-optic modulation (AOM) method has been widely used in laser intensity stabilization and highfrequency modulation, whose crystal volume is usually smaller than Faraday and PEM. At present, the fountain clock [12] and CPT atomic clock [13] widely use the AOM to stabilize the laser power and suppress the optical noise. The effect of light power stability can be estimated by Allan deviation, and the AOM method has good performance in noise suppression and device integration.…”

Section: Introductionmentioning

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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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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Laser power stabilization for the detection of the populations of the atomic double levels in Cs fountain clock

Cited by 6 publications

References 8 publications

Power stabilization of a diode laser with an acousto-optic modulator

Power stabilization of a diode laser with an acousto-optic modulator

The optical system of the fountain clock

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

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