Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects

Q 30.41: Poster

Tuesday, March 18, 2014, 16:30–18:30, Spree-Palais

Pulsed picosecond fiber amplifier at 1030nm — •Jochen Baaz, Tobias Beck, and Thomas Walther — Technische Universität Darmstadt, Institut für Angewandte Physik, Laser- und Quantenoptik, Schlossgartenstraße 7, 64289 Darmstadt

Laser cooling provides a fast and efficient way for high phase space densities in heavy ion beams with relativistic speeds in storage rings. Current laser systems employed use a scanning narrowband laser. An alternative approach would be a fourier limited pulsed laser producing a broad spectrum with a sharp cutoff in the blue part of the spectrum. This poster will report on our work towards the setup of such a system. We employ a grating stabilised external cavity diode laser running at 1029 nm. Its output is amplified up to 9W by a fiber amplifier. Subsequently a combination of AOM and EOMs will cut pulses with a duration of 80 ps to 4 ns which will be further amplified by two additional fiber amplifiers. The amplified pulsed will be converted to their fourth harmonic using nonlinear crystals.