Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap

Zheng, Ningxuan; Liu, Wenliang; Wu, Jizhou; Li, Yuqing; Sovkov, Vladimir; Ma, Jie

doi:10.3390/photonics9070442

Open AccessArticle

Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap

by

Ningxuan Zheng

¹,

Wenliang Liu

^1,2,

Jizhou Wu

^1,2,*

,

Yuqing Li

^1,2,

Vladimir Sovkov

^1,3

and

Jie Ma

^1,2,*

¹

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China

²

Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

³

Department of Photonics, St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia

^*

Authors to whom correspondence should be addressed.

Photonics 2022, 9(7), 442; https://doi.org/10.3390/photonics9070442

Submission received: 26 May 2022 / Revised: 19 June 2022 / Accepted: 19 June 2022 / Published: 22 June 2022

(This article belongs to the Special Issue Advances and Application of Optical Manipulation)

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Abstract

Parametric modulation is an effective tool to measure the trap frequency and investigate the atom dynamics in an optical dipole trap or lattices. Herein, we report on experimental research of parametric resonances in an optical dipole trap. By modulating the trapping potential, we have measured the atomic loss dependence on the frequency of the parametric modulations. The resonance loss spectra and the evolution of atom populations at the resonant frequency have been demonstrated and compared under three modulation waveforms (sine, triangle and square waves). A phenomenological theoretical simulation has been performed and shown good accordance with the observed resonance loss spectra and the evolution of atom populations. The theoretical analysis can be easily extended to a complex waveform modulation and reproduce enough of the experiments.

Keywords: optical dipole trap; parametric excitation; multi-waveform modulation

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MDPI and ACS Style

Zheng, N.; Liu, W.; Wu, J.; Li, Y.; Sovkov, V.; Ma, J. Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap. Photonics 2022, 9, 442. https://doi.org/10.3390/photonics9070442

AMA Style

Zheng N, Liu W, Wu J, Li Y, Sovkov V, Ma J. Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap. Photonics. 2022; 9(7):442. https://doi.org/10.3390/photonics9070442

Chicago/Turabian Style

Zheng, Ningxuan, Wenliang Liu, Jizhou Wu, Yuqing Li, Vladimir Sovkov, and Jie Ma. 2022. "Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap" Photonics 9, no. 7: 442. https://doi.org/10.3390/photonics9070442

APA Style

Zheng, N., Liu, W., Wu, J., Li, Y., Sovkov, V., & Ma, J. (2022). Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap. Photonics, 9(7), 442. https://doi.org/10.3390/photonics9070442

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap

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