Applied Physics B

, Volume 88, Issue 1, pp 21–28

A simple scheme for precise relative frequency stabilization of lasers

  • N. Strauß
  • I. Ernsting
  • S. Schiller
  • A. Wicht
  • P. Huke
  • R.-H. Rinkleff
Article

Abstract

We present a simple scheme for tuneable relative frequency stabilization of lasers. A highly sensitive and accurate frequency-to-voltage converter is used to derive an error signal from the beat note between two lasers. We analyze in detail detector noise and drift, modulation detection bandwidth, and cross-talk from power modulation. The results indicate that sub-kHz relative linewidth and a locking point drift on the order of 100 Hz for times scales of 1 h are achievable. The scheme can, therefore, be applied to situations where up to now only optical PLLs could provide sufficient accuracy and precision. To demonstrate its potential for high-resolution, high-precision spectroscopy we lock a diode laser to a fs-frequency comb and find a relative linear drift of 314 Hz during a 2.8 h period.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • N. Strauß
    • 1
  • I. Ernsting
    • 1
  • S. Schiller
    • 1
  • A. Wicht
    • 1
  • P. Huke
    • 2
  • R.-H. Rinkleff
    • 2
  1. 1.Institut für ExperimentalphysikHeinrich-Heine-Universität DüsseldorfDüsseldorfGermany
  2. 2.Institut für GravitationsphysikLeibniz Universität HannoverHannoverGermany

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