Anomalous laser-induced group velocity dispersion in fused silica

Gennady Rasskazov; Anton Ryabtsev; Dmitry Pestov; Bai Nie; Vadim V Lozovoy; Marcos Dantus

doi:10.1364/OE.21.017695

Anomalous laser-induced group velocity dispersion in fused silica

Opt Express. 2013 Jul 29;21(15):17695-700. doi: 10.1364/OE.21.017695.

Authors

Gennady Rasskazov¹, Anton Ryabtsev, Dmitry Pestov, Bai Nie, Vadim V Lozovoy, Marcos Dantus

Affiliation

¹ Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA.

PMID: 23938642
DOI: 10.1364/OE.21.017695

Abstract

We present 20fs(2) accuracy laser-induced group velocity dispersion (LI-GVD) measurements, resulting from propagation of a femtosecond laser pulse in 1mm of fused silica, as a function of peak intensity. For a 5.5 × 10(11) W/cm(2) peak intensity, LI-GVD values are found to vary from -3 to + 15 times the material GVD. Normal induced dispersion can be explained by the Kerr effect, but anomalous LI-GVD, found when the input pulses have negative pre-chirp, cannot. These findings have significant implications regarding self-compression and the design of femtosecond lasers.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Computer-Aided Design
Energy Transfer
Equipment Design
Equipment Failure Analysis
Lasers*
Light
Scattering, Radiation
Silicon Dioxide / chemistry*
Silicon Dioxide / radiation effects*

Substances

Silicon Dioxide