Frequency metrology with a turnkey all-fiber system
ABSTRACT The repetition rate and carrier-envelope phase offset frequencies of a turnkey, all-fiber-based continuum generator were phase locked to a hydrogen maser. The frequency of the hydrogen maser was calibrated with a highly stable cesium atomic clock, and therefore a fully phase-locked optical frequency comb with well-defined absolute frequencies was obtained. In contrast with the commonly used Ti:sapphire-laser-based systems, we have accomplished a fully turnkey system with no user-adjustable parts. To evaluate the performance of this novel system, we performed absolute frequency measurements in the telecommunications region and at 1064 nm and compared them with our traditional Ti:sapphire-based comb.
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ABSTRACT: The frequency comb generated by a high repetition frequency erbium-doped fiber ring laser using carbon nanotube saturable absorber is phase-stabilized for the first time. The comb's stability is compared a photonic crystal fiber acetylene reference.Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on; 07/2009
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ABSTRACT: We experimentally demonstrated a sub-picosecond laser based on Yb:Gd<sub>2</sub>SiO<sub>5</sub> crystal and obtained stable rational harmonic mode-locked laser output. Along with the fundamental repetition rate of 100 MHz, we observed the generation of the 200 MHz harmonics and pulse bunches, depending on the balance between the laser gain and incident pulse energy fluence on the semiconductor saturable absorber mirror. The pulse duration in harmonic mode-locking operation was measured as 600 fs, while pulses in bunch were measured with a duration of 1 ps separated by 20-ps time interval.IEEE Journal of Quantum Electronics 02/2009; 45(1-45):86 - 89. DOI:10.1109/JQE.2008.2001946 · 2.11 Impact Factor
Conference Paper: 170MHz spaced, self-referenced fiber-frequency-comb[Show abstract] [Hide abstract]
ABSTRACT: An optically integrated frequency-comb-system based on a passively-mode locked, f<sub>CEO</sub>-locked Er:soft-glass-fiber-laser and a PPLN-waveguide phase-sensor is demonstrated. The oscillator emits pulses with 61 nm spectral bandwidth and 170 MHz repetition frequency.Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on; 06/2006