Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 29: Ultrashort Laser Pulses: Generation and Applications (with Q)
A 29.5: Vortrag
Donnerstag, 9. März 2017, 15:30–15:45, P 5
Non-Collinear Circular Polarized High Harmonic Generation — •Patrik Grychtol1, Jennifer Ellis1, Kevin Dorney1, Carlos Hernández-García2, Franklin Dollar1, Christopher Mancuso1, Tinting Fan1, Dmitriy Zusin1, Christian Gentry1, Charles Durfee3, Daniel Hickstein1, Henry Kapteyn1, and Margaret Murnane1 — 1JILA-NIST and Department of Physics, University of Colorado, Boulder, CO 80309, USA — 2Grupo de Investigación en Aplicaciones del Láser y Fotónica, Departamento de Física Aplicada, University of Salamanca, Spain — 3Department of Physics, Colorado School of Mines, Golden, CO 80401, USA
The process of high harmonic generation (HHG) allows for producing attosecond bursts of extreme ultraviolet and soft x-ray light on the tabletop. HHG sources are ideal tools for a variety of scientific and technologically important applications, such as imaging of nanoscale material properties, ultrafast spectroscopy of photoelectrons or element-specific characterization of spin dynamics. While the emission of bright HHG radiation had been limited to linear polarization for quiet a long time, recent exciting breakthroughs have demonstrated the production of high harmonic beams with controllable polarization using two counter-rotating circularly polarized driving laser beams in a collinear or non-collinear geometry. This contribution will focus on the non-collinear case, which offers several key benefits, such as the polarization selective angular separation of the harmonics without a spectrometer. Furthermore, it will be demonstrated how full phase-matching in a non-collinear geometry can be achieved.