Eur. Phys. J. Appl. Phys.
Volume 48, Number 2, November 2009
|Number of page(s)||5|
|Published online||22 September 2009|
Efficient technique for measuring laser frequency stability
Institute for Physical Research, NAS of Armenia, Ashtarak-2 0203, Armenia
2 Département de Physique, Université de Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland
Corresponding author: email@example.com
Accepted: 15 July 2009
Published online: 22 September 2009
We propose a new technique for measuring the frequency stability of cw laser radiation. The technique relies on using the laser to be tested as a coupling laser in a scheme of electromagnetically-induced transparency (EIT), either on a or a ladder system. A second, frequency tunable laser (stabilization of this laser is not needed) is used both to act as the EIT probe laser, and to form an atomic frequency reference spectrum. The frequency stability is monitored via the frequency deviation of the EIT resonance with respect to an atomic reference frequency. We also present an improved dichroic atomic vapor laser lock (DAVLL) method for frequency stabilization based on a nanocell with a thickness.
PACS: 32.80.Qk – Coherent control of atomic interactions with photons / 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 42.60.Lh – Efficiency, stability, gain, and other operational parameters / 42.55.Px – Semiconductor lasers; laser diodes
© EDP Sciences, 2009
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