[10p-F212-1~14] 3.9 Optical quantum physics and technologies

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[10p-F212-12] Frequency Stabilization of a 1389 nm Laser for Repumping the ³P₀ State in a Yb Atomic MOT

〇Shumpei Yamauchi¹, Kenshin Murai¹, Fumiya Hori², Tsubasa Kashimura², Kanta Asakawa², Daisuke Akamatsu², Feng-lei Hong^1,2 (1.IGS. YNU., 2.Dep. Phys. YNU.)

Keywords:

cooled atoms,laser cooling,frequency stabilization

In the magneto-optical trap (MOT) of ytterbium atoms, decay from the excited state to the long-lived ³P₀ and ³P₂ states limits the number of trapped atoms. In this study, we investigate single-wavelength repumping from the ³P₀ state using a 1389 nm laser to simplify the optical setup. To address the narrow linewidth of the transition, we construct a frequency stabilization system based on the delay-line method using the beat signal between the laser and an optical frequency comb, aiming to suppress frequency fluctuations and demonstrate an increase in the number of atoms in the MOT.