Narrow-linewidth and stable-frequency light source for laser cooling of magnesium fluoride molecules

  • Yanning Yin
  • , Yong Xia*
  • , Xingjia Li
  • , Xiuxiu Yang
  • , Supeng Xu
  • , Jianping Yin
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We demonstrate the frequency doubling, linewidth narrowing, and frequency stabilization of two cw Ti:sapphire lasers for the laser cooling of magnesium fluoride (MgF) molecules. From the energy-level structure of MgF, both lasers are frequency-doubled to ultraviolet to serve as cooling and repumping lasers. By constructively establishing a frequency stabilization system that firstly stabilizes both lasers via a "side-of-fringe" scheme to their reference resonators, which are then length-locked to a helium-neon (HeNe) laser through a transfer cavity, we obtain two lasers with a narrow linewidth of ∼ 6 kHz and an extraordinary long-term frequency stability of ±2.8 MHz.

Original languageEnglish
Article number092701
JournalApplied Physics Express
Volume8
Issue number9
DOIs
StatePublished - 1 Sep 2015

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