Long-wavelength-infrared laser filamentation in solids in the near-single-cycle regime
Abstract
We experimentally demonstrate long-wavelength-infrared (LWIR) femtosecond filamentation in solids. Systematic investigations of supercontinuum (SC) generation and self-compression of the LWIR pulses assisted by laser filamentation are performed in bulk KrS-5 and ZnSe, pumped by ∼ 145 f s , 9 µm, 10 µJ pulses from an optical parametric chirped-pulse amplifier operating at 10 kHz of repetition rate. Multi-octave SC spectra are demonstrated in both materials. While forming stable single filament, 1.5 cycle LWIR pulses with 4.5 µJ output pulse energy are produced via soliton-like self-compression in a 5 mm thick KrS-5. The experimental results quantitatively agree well with the numerical simulation based on the unidirectional pulse propagation equation. This work shows the experimental feasibility of high-energy, near-single-cycle LWIR light bullet generation in solids.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 07, 2020
- Source ID
- 10.1364/ol.389456
Entities
People
- Bonggu Shim
- Dennis Dempsey
- Garima Chaudhary Nagar
- Houkun Liang
- Kun Liu
- Kyung-Han Hong
- Qi Jie Wang
- Seck Hon Luen
- Shizhen Qu
- Wenkai Li
- Xiao Zou
- Ying Zhang
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- United States Department of Energy