Stuttgart 2012 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 2: Licht- und Strahlungsquellen I
K 2.1: Vortrag
Montag, 12. März 2012, 15:30–15:45, V57.04
High-energy, 3.3-octave spanning supercontinuum in bulk driven at mid-IR — •Matthias Baudisch1, Francisco Silva1, Dane Austin1, Alexandre Thai1, Michaël Hemmer1, Arnaud Couairon2, and Jens Biegert1,3 — 1ICFO - Institut de Ciencies Fotoniques, 08860 Castelldefels, Barcelona, Spain — 2Centre de Physique Theorique, Ecole Polytechnique, CNRS UMR 7644, F-91128 Palaiseau Cedex, France — 3ICREA - Institucio Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
Ultra-broadband, coherent radiation has a rising importance for many applications such as optical coherence tomography and multicolor pump-probe spectroscopy. In this work we demonstrate the generation of a supercontinuum in yttrium aluminum garnet (YAG) spanning from the visible up to the mid-IR. The pump pulses centered at 3100 nm were provided by a home-built optical parametric chirped pulse amplifier delivering carrier-envelope phase stable pulses with 10 μJ of pulse energy, 67 fs duration and 160 kHz repetition rate. For the experiment the beam was focused into a 2 mm-thick YAG plate. The detection was realized using three detectors to cover the entire spectral extend of the continuum. The measured spectrum spans smoothly from 450 nm up to 4500 nm with high spectral energy densities from 2 pJ/nm in the 750-1000 nm spectral range up to 10 nJ/nm around the mid-infrared pump wavelength.