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Pramana

, Volume 65, Issue 3, pp 403–411 | Cite as

Laser frequency stabilization and large detuning by Doppler-free dichroic lock technique: Application to atom cooling

  • V. B. Tiwari
  • S. R. Mishra
  • H. S. Rawat
  • S. Singh
  • S. P. Ram
  • S. C. Mehendale
Article

Abstract

We present results of a study of frequency stabilization of a diode laser (λ = 780 nm) using the Doppler-free dichroic lock (DFDL) technique and its use for laser cooling of atoms. Quantitative measurements of frequency stability were performed and the Allan variance was found to be 6.9 × 1011 for an averaging time of 10 s. The frequency-stabilized diode laser was used to obtain the trapping beams for a magneto-optic trap (MOT) for Rb atoms. Using the DFDL technique, the laser frequency could be locked over a wide range and this enabled measurement of detuning dependence of the number and temperature of cold atoms using a relatively simple experimental set-up.

Keywords

Diode laser frequency stabilization laser atom cooling agneto-optic trap 

PACS Nos

32.80.Pj 42.55.Px 32.10.Fn 

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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • V. B. Tiwari
    • 1
  • S. R. Mishra
    • 1
  • H. S. Rawat
    • 1
  • S. Singh
    • 1
  • S. P. Ram
    • 1
  • S. C. Mehendale
    • 1
  1. 1.Laser Physics DivisionCentre for Advanced TechnologyIndoreIndia

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