[15p-P10-1~10] 3.8 Optical measurement, instrumentation, and sensor

[15p-P10-5] Frequency stabilization using a narrow-linewidth diode laser at 1.5 μm

〇Kazumichi Yoshii^1,2, Takuya Inamura¹, Hiroyuki Sagawa¹, Ken'ichi Nakagawa³, Fen-Lei Hong^1,2 (1.Dep. Phys. YNU, 2.JST, ERATO MINOSHIMA IOS, 3.ILS. UEC)

Keywords:frequency stabilized laser, acetylene, narrow-linewidth laser

We demonstrate high-precision spectroscopy of acetylene using a narrow-linewidth diode laser at 1.5 μm. The Doppler-free spectroscopy of acetylene is based on the modulation transfer technique. Modulation-free laser output is obtained with a linewidth of several 10 kHz and a stability of 3.6×10^-12 (averaging time = 1 s).