Revisiting the laser frequency locking method using acousto-optic frequency modulation transfer spectroscopy

Yukun Luo; Shuhua Yan; Aiai Jia; Chunhua Wei; Zehuan Li; Enlong Wang; Jun Yang

doi:10.3788/COL201614.121401

Journals >Chinese Optics Letters >Volume 14 >Issue 12 >Page 121401 > Article

Chinese Optics Letters
Vol. 14, Issue 12, 121401 (2016)

Revisiting the laser frequency locking method using acousto-optic frequency modulation transfer spectroscopy

Yukun Luo^1、2, Shuhua Yan^1、2、*, Aiai Jia^1、2, Chunhua Wei^1、2, Zehuan Li^1、2, Enlong Wang^1、2, and Jun Yang^1、2

Author Affiliations

¹Department of Instrument Science and Technology, College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha 410073, China

²Interdisciplinary Center for Quantum Information, National University of Defense Technology, Changsha 410073, China

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DOI: 10.3788/COL201614.121401 Cite this Article Set citation alerts

Yukun Luo, Shuhua Yan, Aiai Jia, Chunhua Wei, Zehuan Li, Enlong Wang, Jun Yang. Revisiting the laser frequency locking method using acousto-optic frequency modulation transfer spectroscopy[J]. Chinese Optics Letters, 2016, 14(12): 121401 Copy Citation Text

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Abstract

We present a laser frequency locking system based on acousto-optic modulation transfer spectroscopy (AOMTS). Theoretical and experimental investigations are carried out to optimize the locking performance mainly from the view of the modulation frequency and index for the specific scheme of AOMTS. An FWHM linewidth of 63 kHz is achieved and the frequency stability in terms of Allan standard deviation reaches

1.4 \times 10^{12}

at 30 s. The frequency shifting capacity is validated throughout the acousto-optic modulator bandwidth while the laser is kept locked. This work offers a different but efficient choice for applications calling for both stabilized and tunable laser frequencies.