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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
  • 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.
  • Keywords:
    optical phase-locked loop, extended-cavity diode laser, phase noise, atom interferometry
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  • DOI:
    _unreg_wc-2012.TC2-O11

Event details:

  • IMEKO TC:
  • Event name:
    XX IMEKO World Congress
  • Title:

    Metrology for Green Growth

  • Place:
    Busan, REPUBLIC of KOREA
  • Time:
    09 September 2012 - 12 September 2012