Hannover 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 49: Ultrashort laser pulses: Generation II
Q 49.1: Gruppenbericht
Donnerstag, 21. März 2013, 11:00–11:30, F 142
Novel opportunities with intense mid-IR pulses: Self-compression to the 3-cycle regime and broadest coherent supercontinuum source — Matthias Baudisch1, •Michael Hemmer1, Alexandre Thai1, Francisco Silva1, Dane Austin1, Arnaud Couairon2, Daniele Faccio3, and Jens Biegert1,4 — 1ICFO Institut de Ciencies Fotoniques, 08860 Castelldefels, Barcelona, Spain — 2Centre de Physique Theorique, Ecole Polytechnique, CNRS UMR 7644, F-91128 Palaiseau Cedex, France — 3Heriot-Watt University, Edinburgh Campus, Edinburgh EH14 4AS, United Kingdom — 4ICREA Institucio Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
Availability of intense few-cycle pulses in the mid-IR allows scrutinizing strong field and attoscience phenomena in the deep tunneling regime. We present first results from anomalous nonlinear propagation and filamentation in solid state media. We observe coherent supercontinuum generation from filamentary propagation in YAG avoiding the ubiquitous chaotic pulse breakup and loss of coherence. The resulting 3.3 octave-spanning spectrum is the broadest demonstrated, and coherent, supercontinuum generated in bulk [1]. Furthermore, the intricate pulse propagation dynamics results in stable temporal self-compression from 70 fs at 3100 nm to 32 fs which correspond to the sub-3-optical-cycle regime. The self-compression is surprisingly efficient (80%) and extremely stable; we observe a pulse-to-pulse stability of 0.8% rms. Numerical simulations and experimental results show excellent agreement.