Applied Physics B

, Volume 88, Issue 1, pp 21–28

A simple scheme for precise relative frequency stabilization of lasers

Authors

  • N. Strauß
    • Institut für ExperimentalphysikHeinrich-Heine-Universität Düsseldorf
  • I. Ernsting
    • Institut für ExperimentalphysikHeinrich-Heine-Universität Düsseldorf
  • S. Schiller
    • Institut für ExperimentalphysikHeinrich-Heine-Universität Düsseldorf
    • Institut für ExperimentalphysikHeinrich-Heine-Universität Düsseldorf
  • P. Huke
    • Institut für GravitationsphysikLeibniz Universität Hannover
  • R.-H. Rinkleff
    • Institut für GravitationsphysikLeibniz Universität Hannover
Article

DOI: 10.1007/s00340-007-2668-9

Cite this article as:
Strauß, N., Ernsting, I., Schiller, S. et al. Appl. Phys. B (2007) 88: 21. doi:10.1007/s00340-007-2668-9

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.

Copyright information

© Springer-Verlag 2007