8 May 2018 Optical frequency comb stabilization of a gigahertz semiconductor disk laser
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Abstract
Semiconductor lasers are a promising technology to make optical comb systems more accessible and cost-efficient. We stabilized the carrier-envelope offset (CEO) frequency of a semiconductor disk laser. The laser was modelocked by a SESAM and generates pulses at a wavelength of 1034 nm. It operates at a repetition frequency of 1.8 GHz. The 270-fs pulses are amplified to 3 W and compressed to 120 fs. A coherent octave-spanning supercontinuum spectrum is generated in a highly nonlinear fiber. Using a standard f-to-2f interferometer, we detect the CEO beat with a signal-to-noise ratio of ~30 dB. By applying a feedback signal to the pump current, the CEO frequency is phase-locked to an external reference.
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Nayara Jornod, Nayara Jornod, Kutan Gürel, Kutan Gürel, Valentin J. Wittwer, Valentin J. Wittwer, Pierre Brochard, Pierre Brochard, Sargis Hakobyan, Sargis Hakobyan, Stéphane Schilt, Stéphane Schilt, Dominik Waldburger, Dominik Waldburger, Ursula Keller, Ursula Keller, Thomas Südmeyer, Thomas Südmeyer, } "Optical frequency comb stabilization of a gigahertz semiconductor disk laser", Proc. SPIE 10638, Ultrafast Bandgap Photonics III, 106381W (8 May 2018); doi: 10.1117/12.2318621; https://doi.org/10.1117/12.2318621
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