Association Mission
The mission of the association is to advance the creation, communication and application of knowledge to benefit society and improve people's lives.
Legal Members
Membership
Contact Us
year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 9-12 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Ajami A, Nathala C, Husinsky W. White light suppercontinuum generation using femtosecond pulses. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :9-12
URL: http://opsi.ir/article-1-2293-en.html
URL: http://opsi.ir/article-1-2293-en.html
1- Faculty of Physics, Semnan University, Semnan, Iran
2- Institute of Applied Physics, Vienna University of Technology, Vienna, Austria
2- Institute of Applied Physics, Vienna University of Technology, Vienna, Austria
Abstract: (863 Views)
In this work, we report on white light continuum (WLC) generation by focusing sub-mJ ultrashort laser pulses at central wavelength of 800 nm into the bulk of Calcium Fluoride (CaF2) crystal. The WLC spectrum was measured for various focusing conditions, different pulse energies and different pulse durations. A broadened spectrum ranging from 350 nm up to around 950 nm was observed whereas the pump laser has a bandwidth of about 44 nm. The extent of spectrum broadening was found to be increased by enhancing the peak intensity either via increasing the pulse energy or decreasing the pulse duration or decreasing the beam waist radius. However, two different broadening types were observed; almost symmetric broadening around the pump wavelength and strong asymmetric broadening that is extended much more toward the blue side. We distinguished two time regimes of few-100 fs in which symmetric broadening occurs as a result of self phase modulation (SFM) and sub-100 fs in which anti-Stock spectral components are created more strongly as an indication of predominance of the multi-photon ionization (MPI) process.
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
