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Appl. Sci. 2018, 8(5), 784; https://doi.org/10.3390/app8050784

Generation of Ultrashort Optical Pulses in the Deep-Ultraviolet Region Based on Four-Wave Raman Mixing

1
Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
2
Division of International Strategy, Center of Future Chemistry, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Received: 11 April 2018 / Revised: 9 May 2018 / Accepted: 14 May 2018 / Published: 15 May 2018
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Abstract

A two-color pump beam (800 and 1200 nm) was introduced into hydrogen for molecular phase modulation, and a probe beam (267 nm) to generate Raman sidebands, by coherent frequency modulation based on four-wave Raman mixing. The phase and temporal profile were evaluated by means of a self-diffraction frequency resolved optical gating (SD FROG) system. The relative phases among the Raman sidebands were controlled by changing the angle of a thin CaF2-plate inserted into the 267-nm beam path, suggesting that a train of 2.6-fs pulses was generated in the deep-ultraviolet region. View Full-Text
Keywords: ultrashort optical pulses; deep-ultraviolet region; four-wave Raman mixing; molecular phase modulation; self-diffraction frequency resolved optical gating ultrashort optical pulses; deep-ultraviolet region; four-wave Raman mixing; molecular phase modulation; self-diffraction frequency resolved optical gating
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mori, Y.; Imasaka, T. Generation of Ultrashort Optical Pulses in the Deep-Ultraviolet Region Based on Four-Wave Raman Mixing. Appl. Sci. 2018, 8, 784.

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