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28 February 2006 Generation of 47-fs pulses from a diode-pumped Yb3+:CaGdAlO4 femtosecond laser
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The demonstration of a directly diode-pumped mode-locked femtosecond oscillator based on an ytterbium-doped CaGdAlO4 single crystal is reported. The 2-at.% Yb3+-doped, 2.5-mm-thick sample is directly diode-pumped by a high-brightness 5W fiber-coupled laser diode and the mode-locked regime is achieved by use of a SEmiconductor Saturable Absorber Mirror (SESAM). This configuration allows the generation of pulses as short as 47 fs at the central wavelength of 1050 nm, which are to our knowledge the shortest laser pulses ever obtained from a bulk ytterbium-doped laser. The average power is 38 mW and the repetition rate is 109 MHz. In a preliminary test, we built a three mirror folded cavity in which we inserted a single SF10 prism and obtained a very large and smooth cw tunability that spanned from 1013 nm to 1059 nm.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoann Zaouter, Justine Boudeile, Frederic Druon, Patrick Georges, Johan Petit, Philippe Goldner, and Bruno Viana "Generation of 47-fs pulses from a diode-pumped Yb3+:CaGdAlO4 femtosecond laser", Proc. SPIE 6100, Solid State Lasers XV: Technology and Devices, 61000J (28 February 2006);


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