Ultra low phase noise optical phase locking of two extended-cavity diode lasers for an atom interferometry

Sin Hyuk Yim, Sang Eon Park, Sang Bum Lee, D. Cho, Taeg Yong Kwon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present an electrical heterodyne phase locking of two ECDLs (Extended-cavity diode lasers) with a frequency difference of 6.9 GHz. We could increase the bandwidth of the phase locked loop up to 8 MHz with an electrical feedback to a current of a slave ECDL. And we have achieved the residual phase noise below -120 dBrad2/Hz between two phase-locked ECDLs in the frequency range from 100 Hz to 300 kHz, which is the lowest phase noise level ever reported with ECDLs.

Original languageEnglish
Title of host publication20th IMEKO World Congress 2012
Pages1736-1737
Number of pages2
Publication statusPublished - 2012
Event20th IMEKO World Congress 2012 - Busan, Korea, Republic of
Duration: 2012 Sep 92012 Sep 14

Publication series

Name20th IMEKO World Congress 2012
Volume3

Other

Other20th IMEKO World Congress 2012
CountryKorea, Republic of
CityBusan
Period12/9/912/9/14

Keywords

  • Atom interferometry
  • Extended-cavity diode laser
  • Optical phase-locked loop
  • Phase noise

ASJC Scopus subject areas

  • Computer Science Applications
  • Environmental Engineering
  • Biomedical Engineering

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  • Cite this

    Yim, S. H., Park, S. E., Lee, S. B., Cho, D., & Kwon, T. Y. (2012). Ultra low phase noise optical phase locking of two extended-cavity diode lasers for an atom interferometry. In 20th IMEKO World Congress 2012 (pp. 1736-1737). (20th IMEKO World Congress 2012; Vol. 3).