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Proceedings Paper

Kerr-lens mode-locked lasers for optical frequency measurements
Author(s): Jorn Stenger; Harald R. Telle
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Paper Abstract

The frequency of the intercombination line 3P1 - 1S0 of Calcium at 657 nm is phase-coherently measured in terms of the output of a primary cesium frequency standard using an optical frequency comb generator comprising a < 10 fs Kerr-lens mode-locked Ti:Sapphire laser and an external microstructure fiber for self-phase-modulation. The measured frequency value of vCa equals 455 986 240 494 276 Hz agrees within its relative uncertainty of 4 X 10-13 with the values previously measured with a traditional harmonic frequency chain and the value recommended for the realization of the SI unit of length. Furthermore, we investigate the coherence properties of the broadened frequency comb and find no indications for incoherent scattering processes in the microstructure fiber.

Paper Details

Date Published: 3 May 2001
PDF: 5 pages
Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); doi: 10.1117/12.424488
Show Author Affiliations
Jorn Stenger, Physikalisch-Technische Bundesanstalt (Germany)
Harald R. Telle, Physikalisch-Technische Bundesanstalt (Germany)

Published in SPIE Proceedings Vol. 4269:
Laser Frequency Stabilization, Standards, Measurement, and Applications
John L. Hall; Jun Ye, Editor(s)

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