Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm

Yoshihiro Takata; Shuta Nakajima; Jun Kobayashi; Koki Ono; Yoshiki Amano; Yoshiro Takahashi

doi:10.1063/1.5110037

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arXiv · 1905.05103

Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm

Yoshihiro Takata·Shuta Nakajima·Jun Kobayashi·Koki Ono·Yoshiki Amano·Yoshiro Takahashi

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Abstract

We developed a laser system for the spectroscopy of the clock transition in ytterbium (Yb) atoms at 578 nm based on an interference-filter stabilized external-cavity diode laser (IFDL) emitting at 1156 nm. Owing to the improved frequency-to-current response of the laser-diode chip and the less sensitivity of the IFDL to mechanical perturbations, we succeeded in stabilizing the frequency to a high-finesse ultra-low-expansion glass cavity with a simple current feedback system. Using this laser system, we performed high-resolution clock spectroscopy of Yb and found that the linewidth of the stabilized laser was less than 320 Hz.

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Yoshihiro Takata, Shuta Nakajima, Jun Kobayashi, Koki Ono, Yoshiki Amano, Yoshiro Takahashi. 2019-05-13. Current-feedback-stabilized laser system for quantum simulation experiments using Yb clock transition at 578 nm. https://doi.org/10.1063/1.5110037

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