학술논문
Femtosecond supercontinuum generation and superfilamentation in liquids and supercritical fluids
Document Type
Conference
Author
Source
2016 International Conference Laser Optics (LO) Laser Optics (LO), 2016 International Conference. :R8-19-R8-19 Jun, 2016
Subject
Language
Abstract
We for the first time report a generation of multioctave supercontinuum in supercritical CO2 and Xe by 0.6 mJ 1240nm femtosecond (200 fs) laser pulse. In supercritical CO2 it ranges from 350 to 1900 nm and have a plateau-like behavior in the range 1400–1900 nm, besides 50% of energy is transferred to the first Stokes component. The increase of laser energy and focusing lens numerical aperture in liquids leads to the formation of superfilament, which triggers shock waves generation, cavitation bubble formation and provides tightly divergent supercontinuum.