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Title: High-energy mid-infrared intrapulse difference-frequency generation with 5.3% conversion efficiency driven at 3 µm
Authors: Liu, Kun
Liang, Houkun
Qu, Shizhen
Li, Wenkai
Zou, Xiao
Zhang, Ying
Wang, Qi Jie
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Liu, K., Liang, H., Qu, S., Li, W., Zou, X., Zhang, Y. & Wang, Q. J. (2019). High-energy mid-infrared intrapulse difference-frequency generation with 5.3% conversion efficiency driven at 3 µm. Optics Express, 27(26), 37706-37713.
Project: 1426500050 
MOE 2016-T2-1-128 
Journal: Optics Express 
Abstract: Intrapulse difference-frequency generation (IPDFG) is a relatively simple technique to produce few-cycle mid-infrared (MIR) radiations. The conversion efficiency of IPDFG could be potentially improved by using the long driving wavelength to reduce the quantum defect. In this paper, we report a high-energy MIR IPDFG source with a record-high conversion efficiency of up to 5.3%, driven by 3 µm, 35 fs, 10 kHz pulses. The IPDFG output has a 5 µJ pulse energy and 50 mW average power. It spans over a spectral range from 6 to 13.2 µm. A 68 fs of IPDFG pulse width is measured, corresponding to 2.1 cycles, centered at 9.7 µm. The high-energy, two-cycle IPDFG pulses are used to produce a 3-octave supercontinuum in a KRS-5 crystal, spanning from 2 to 16 µm, with a 2.4 µJ pulse energy and a 24 mW average power.
ISSN: 1094-4087
DOI: 10.1364/OE.27.037706
Schools: School of Electrical and Electronic Engineering 
Rights: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for noncommercial purposes and appropriate attribution is maintained. All other rights are reserved.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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