Locking multi-laser frequencies to a precision wavelength meter: Application to cold atoms

Junwoo Kim, Keumhyun Kim, Dowon Lee, Yongha Shin, Sungsam Kang, Jung Ryul Kim, Youngwoon Choi, Kyungwon An, Moonjoo Lee

Research output: Contribution to journalArticlepeer-review

Abstract

We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find σy = 10−12 at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of87Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.

Original languageEnglish
Article number6255
JournalSensors
Volume21
Issue number18
DOIs
Publication statusPublished - 2021 Sep

Keywords

  • External cavity diode laser
  • Laser frequency stabilization
  • Wavelength meter

ASJC Scopus subject areas

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

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