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Proposed is an approach to achieving a carrier-envelope-offset (CEO)-locked frequency comb with 25 GHz mode spacing in the telecommunications wavelength region. To achieve the approach, a 250 fs laser pulse train at a 25 GHz repetition rate was developed by intensity- and phase-modulating a seed light emitted from a continuous-wave laser diode and propagating it through a dispersive fibre. Using the...
We demonstrate a carrier-envelope-offset-locked frequency comb with 500-pJ pulse energy, with increased coupling efficiency into a tellurite PCF by using angled-V-groove splicing. Carrier-envelope-offset stabilization at telecommunications wavelengths is achieved at the lowest pulse energy.
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