Cavity enhanced measurement of trap frequency in an optical dipole trap

Yang, Pengfei; He, Hai; Wang, Zhi‐Hui; Han, Xing; Li, Gang; Zhang, Pengfei; Zhang, Tiancai

doi:10.1088/1674-1056/28/4/043701

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…An optical enhancement cavity (OEC) is a passive optical resonator that enables coherent superposition of laser light. A high-finesse OEC provides high-power density and high-frequency resolution, and has a wide range of applications, including high-order harmonic generation, [1,2] precision metrology, [3,4] quantum optics, [5,6] high-flux x/gammaray generation, [7][8][9] and gravitational wave detection. [10] In addition, the high-power laser stored in an OEC can serve as a modulator in steady-state microbunching (SSMB) experiments.…”

Section: Introductionmentioning

confidence: 99%

Finesse measurement for high-power optical enhancement cavity

Liu

Tian

et al. 2023

Chinese Phys. B

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Finesse is a critical parameter for describing the characteristics of an optical enhancement cavity (OEC). The paper first presents a review of finesse measurement techniques, including a comparative analysis of the advantages, disadvantages, and potential limitations of several main methods from both theoretical and practical perspectives. A variant of the existing method called the free spectral range (FSR) modulation method is proposed and compared with three other finesse measurement methods: the fast-switching cavity ring-down (CRD) method, the rapidly swept-frequency (SF) CRD method, and the ringing effect method. A high-power OEC platform with a high finesse of approximately 16,000 is built and measured with the four methods. The performance of these methods is compared, and the results show that the FSR modulation method and the fast-switching CRD method are more suitable and accurate than the other two methods for high-finesse OEC measurements. The CRD method and the ringing effect method can be implemented in open loop using simple equipment and are easy to perform. Additionally, recommendations for selecting finesse measurement methods under different conditions are proposed, which benefit the development of OEC and its applications.

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Section: Introductionmentioning

confidence: 99%

Finesse measurement for high-power optical enhancement cavity

Liu

Tian

et al. 2023

Chinese Phys. B

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“…In recent years, an increasing interest in the development of optical traps for cold atoms with applications to fundamental physical issues [1,2], nanotechnology [3,4], high-resolution microwave [5,6], optical spectroscopy [7,8], frequency standards [9,10] as well as atom optics [11]. * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Optimized loading of ultracold Cs atoms in a magnetic levitated optical dipole trap

Feng,

Qiao,

Yin

et al. 2023

Laser Phys.

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We presented a comprehensive study of optimized loading of ultracold Cs atoms in a magnetic levitated crossed dipole trap. Moreover, we analyzed the optimized experimental parameters of the dipole laser for the opening time and the power intensity prior to switching on the magnetic field which formed the magnetically levitated dipole trap. The number of atoms as the function of sweep time from distinct laser power intensity to a fixed one is measured. And beyond that, the variation of atoms with the dipole laser power intensity per beam was studied experimentally ranging from 0 W cm−2 to a fixed one for loading the dipole trap, and the number of atoms can be increased up to a maximum of ∼1.67 × 106. Our research demonstrates that the ‘pre-loading process’ plays a crucial role in enhancing the loading efficiency of an optical dipole trap.

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“…This quantum interaction progress has been observed in cavity QED experiment. [4][5][6][7] And many quantum effects also have been realized in experiments, including non-demolition measurement, [8][9][10][11][12][13][14] quantum gates, [15][16][17][18][19] quantum entanglement, [20][21][22][23] and manipulation of single atom. [24][25][26][27] In addition, non-classical light is also shown in a cavity QED system.…”

Section: Introductionmentioning

confidence: 99%

Influence of driving ways on measurement of relative phase in a two-atoms cavity system*

Bao¹,

Xu²,

Yang³

2020

Chinese Phys. B

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We study the influence of driving ways on the interaction in a two-atoms cavity quantum electrodynamics system. The results show that driving ways can induce different excitation pathways. We show two kinds of significantly different excitation spectrums under two ways: driving cavity and driving atoms. We demonstrate that driving atoms can be considered as a method to obtain the position information of atoms. This research has very practical application values on obtaining the position information of atoms in a cavity.

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Cavity enhanced measurement of trap frequency in an optical dipole trap

Cited by 3 publications

References 38 publications

Finesse measurement for high-power optical enhancement cavity

Finesse measurement for high-power optical enhancement cavity

Optimized loading of ultracold Cs atoms in a magnetic levitated optical dipole trap

Influence of driving ways on measurement of relative phase in a two-atoms cavity system*

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