Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms

K. Harada, T. Aoki, S. Ezure, K. Kato, T. Hayamizu, H. Kawamura, T. Inoue, H. Arikawa, T. Ishikawa, T. Aoki, A. Uchiyama, K. Sakamoto, S. Ito, M. Itoh, S. Ando, A. Hatakeyama, K. Hatanaka, K. Imai, T. Murakami, H. S. NatarajY. Shimizu, T. Sato, T. Wakasa, H. P. Yoshida, Y. Sakemi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We demonstrate frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was successfully obtained by performing delayed self-homodyne detection of the beat signal between the repumping frequency and the 10th-order sideband component of the trapping light. Sweeping the trappinglight and repumping-light frequencies with keeping its frequency difference of 46 GHz was confirmed over 1 GHz by monitoring the Doppler absorption profile of I 2. This technique enables us to search for a resonance frequency of magneto-optical trapping of Fr.

Original languageEnglish
Pages (from-to)1164-1169
Number of pages6
JournalApplied optics
Volume55
Issue number5
DOIs
Publication statusPublished - 2016 Feb 10

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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