Development and characterization of a 2.2 W narrow-linewidth 318.6 nm ultraviolet laser

Abstract

We demonstrate a high-power narrow-linewidth ultraviolet (UV) laser system at 318.6 nm for direct 6S1/2-nP (n = 70 to 100) Rydberg excitation of cesium atoms. Based on commercial fiber lasers and efficient nonlinear frequency conversion technology, 2.26 W of tunable UV laser power is obtained from cavity-enhanced second harmonic generation following sum-frequency generation of two infrared lasers at 1560.5 nm and 1076.9 nm to 637.2 nm. The maximum doubling efficiency is 57.3%. The typical UV laser power root-mean-square fluctuation is less than 0.87% over 30 minutes, and the continuously tunable range of the UV laser frequency is more than 6 GHz. Its beam quality factors M2 X and M2 Y are 1.16 and 1.48, respectively. This high-performance UV laser has significant potential use in quantum optics and cold atom physics.

arXiv comment5 pages, 6 figures

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• Observation of coherent many-body Rabi oscillations
• Interactions Between Rydberg-Dressed Atoms
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• Realization and characterization of single-frequency tunable 637.2 nm high-power laser
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Cited by in corpus (6)

• Single-photon cesium Rydberg excitation spectroscopy using 318.6-nm UV laser and room-temperature vapor cell
• Single-Photon Rydberg Excitation and Trap-Loss Spectroscopy of Cold Cesium Atoms in a Magneto-Optical Trap by Using of a 319-nm Ultra-Violet Laser System
• Autler-Townes doublet in single-photon Rydberg spectra of Cesium atomic vapor with a 319 nm UV laser
• Towards implementation of a magic optical-dipole trap for confining ground-state and Rydberg-state cesium cold atoms
• High-power, frequency-quadrupled UV laser source resonant with the ${}^1$S${}_0$-${}^3$P${}_1$ narrow intercombination transition of cadmium at 326.2 nm
• Asymmetry analysis of Autler-Townes doublet in the trap-loss fluorescence spectroscopy of cesium MOT with single step Rydberg excitation