Abstract
We demonstrate a carrier-envelope-offset-stabilized, self-referenceable Yb:CaF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> oscillator pumped by a single-mode laser diode. By exploiting mode-locking regime based on simultaneous action of the SESAM and the Kerr lens effect we achieved self-starting generation of 85 fs pulses with a peak power approaching 47 kW. The carrier-envelope offset detection scheme was based on a standard f-to-2f interferometer with a spectral broadening in a highly nonlinear photonic crystal fiber. By employing a pump current feedback locking technique we achieved an in-loop integrated phase noise reaching 67 mrad in the 1 Hz - 1 MHz range. This exceptionally stable operation was enabled by a single-mode pump diode exhibiting intrinsically low-noise characteristics.
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