Cross-influence between the two servo loops of a fully stabilized Er:fiber optical frequency comb
| Autor: | Nikola Bucalovic, Pierre Thomann, Stéphane Schilt, Vladimir Dolgovskiy, Gianni Di Domenico, C. Schori |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Beat (acoustics) Comb generator Physics::Optics 02 engineering and technology 01 natural sciences law.invention 010309 optics Frequency comb symbols.namesake 020210 optoelectronics & photonics Optics law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Physics::Atomic Physics business.industry Spectral density Statistical and Nonlinear Physics Laser Atomic and Molecular Physics and Optics Fourier transform symbols Actuator business Frequency modulation |
| Zdroj: | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS |
| Popis: | We present a study of the impact of the cross-coupling between the two servo loops used to stabilize the repetition rate frep and the carrier-envelope offset (CEO) frequency fCEO in a commercial Er:fiber frequency comb, based on the combination of experimental measurements and a model of the coupled loops. The developed theoretical model enables us to quantify the influence of the servo-loop coupling on an optical comb line, by simulating the hypothetic case where no coupling would be present. Numerical values for the model were obtained from an extensive characterization of the comb, in terms of frequency noise and dynamic response to a modulation applied to each actuator, for both frep and fCEO. To validate the model, the frequency noise of an optical comb line at 1.56 μm was experimentally measured from the heterodyne beat between the comb and a cavity-stabilized ultranarrow-linewidth laser and showed good agreement with the calculated noise spectrum. The coupling between the two stabilization loops results in a more than 10-fold reduction of the comb mode frequency noise power spectral density in a wide Fourier frequency range. |
| Databáze: | OpenAIRE |
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