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  Vacuum-ultraviolet to infrared supercontinuum in hydrogen-filled photonic crystal fiber

Belli, F., Abdolvand, A., Chang, W., Travers, J. C., & Russell, P. S. J. (2015). Vacuum-ultraviolet to infrared supercontinuum in hydrogen-filled photonic crystal fiber. OPTICA, 2(4), 292-300. doi:10.1364/OPTICA.2.000292.

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 Creators:
Belli, Federico1, 2, Author           
Abdolvand, Amir2, Author           
Chang, Wonkeun2, Author           
Travers, John C.2, Author           
Russell, Philip St. J.2, Author           
Affiliations:
1International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364697              
2Russell Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364721              

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Free keywords: STIMULATED RAMAN-SCATTERING; ULTRAFAST NONLINEAR OPTICS; LASER-PULSES; CONTINUUM GENERATION; FREQUENCY-CONVERSION; MOLECULAR VIBRATIONS; DEEP-UV; 800 NM; FEMTOSECOND; EXCITATIONOptics;
 Abstract: Although supercontinuum sources are readily available for the visible and near infrared (IR), and recently also for the mid-IR, many areas of biology, chemistry, and physics would benefit greatly from the availability of compact, stable, and spectrally bright deep-ultraviolet and vacuum-ultraviolet (VUV) supercontinuum sources. Such sources have, however, not yet been developed. Here we report the generation of a bright supercontinuum, spanning more than three octaves from 124 nm to beyond 1200 nm, in hydrogen-filled kagome-style hollow-core photonic crystal fiber (kagome-PCF). Few-microjoule, 30 fs pump pulses at wavelength of 805 nm are launched into the fiber, where they undergo self-compression via the Raman-enhanced Kerr effect. Modeling indicates that before reaching a minimum subcycle pulse duration of similar to 1 fs, much less than one period of molecular vibration (8 fs), nonlinear reshaping of the pulse envelope, accentuated by self-steepening and shock formation, creates an ultrashort feature that causes impulsive excitation of long-lived coherent molecular vibrations. These phase modulate a strong VUV dispersive wave (at 182 nm or 6.8 eV) on the trailing edge of the pulse, further broadening the spectrum into the VUV. The results also show for the first time that kagome-PCF guides well in the VUV. (C) 2015 Optical Society of America

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Language(s): eng - English
 Dates: 2015
 Publication Status: Issued
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000354867300004
DOI: 10.1364/OPTICA.2.000292
 Degree: -

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Title: OPTICA
Source Genre: Journal
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Publ. Info: 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA : OPTICAL SOC AMER
Pages: - Volume / Issue: 2 (4) Sequence Number: - Start / End Page: 292 - 300 Identifier: ISSN: 2334-2536