Kerr-lens mode-locked lasers for optical frequency measurements

Jorn Stenger; Harald R. Telle

doi:10.1117/12.424488

3 May 2001 Kerr-lens mode-locked lasers for optical frequency measurements

Jorn Stenger, Harald R. Telle

Proceedings Volume 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications; (2001) https://doi.org/10.1117/12.424488
Event: Photonics West 2001 - LASE, 2001, San Jose, CA, United States

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 v_Ca 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.

Citation Download Citation

Jorn Stenger and Harald R. Telle "Kerr-lens mode-locked lasers for optical frequency measurements", Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); https://doi.org/10.1117/12.424488

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