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  Multi-octave supercontinuum generation in YAG pumped by mid-infrared, multi-picosecond pulses

Cheng, S., Chatterjee, G., Tellkamp, F., Ruehl, A., & Miller, R. J. D. (2018). Multi-octave supercontinuum generation in YAG pumped by mid-infrared, multi-picosecond pulses. Optics Letters, 43(18), 4329-4332. doi:10.1364/OL.43.004329.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-1353-B Version Permalink: http://hdl.handle.net/21.11116/0000-0002-1354-A
Genre: Journal Article

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ol-43-18-4329.pdf (Publisher version), 2MB
 
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https://dx.doi.org/10.1364/OL.43.004329 (Publisher version)
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 Creators:
Cheng, Siqi1, 2, Author              
Chatterjee, G.1, Author              
Tellkamp, F.3, Author              
Ruehl, A.4, 5, Author
Miller, R. J. D.1, 6, 7, Author              
Affiliations:
1Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
2Department of Physics, University of Hamburg, ou_persistent22              
3Machine Physics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074322              
4Leibniz University Hannover, QUEST-Leibniz-Research School, Institute of Quantum Optics, ou_persistent22              
5Laser Zentrum Hannover e.V., ou_persistent22              
6Centre for Ultrafast Imaging (CUI), Universität Hamburg, ou_persistent22              
7Departments of Chemistry and Physics, University of Toronto, ou_persistent22              

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 Abstract: High-energy, multi-octave supercontinuum (SC) generation in bulk media pumped with picosecond pulses in the mid-infrared, though pivotal in a myriad of applications, poses severe constraints due to wavelength scaling of the critical power criterion and the propensity to induce avalanche-ionization-seeded breakdown mechanisms. Here, we demonstrate a simple experimental geometry, relying on a very low numerical aperture for the pump pulse, and a crystal length commensurate with the Rayleigh length of the focusing geometry, generating a multi-octave, stable SC in yttrium aluminum garnet (YAG). The SC ranges from 500 nm to 3.5 μm (measured at −30  dB with spectral components at wavelengths up to 4.5 μm) when pumped by a 3 ps pulse centered at 2.05 μm in the anomalous dispersion regime. We also investigate the dynamics of filament formation in this interaction regime by monitoring the spectral and temporal evolution of the pulse during its propagation through the length of the crystal.

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Language(s): eng - English
 Dates: 2018-08-062018-06-142018-08-072018-08-092018-09-04
 Publication Status: Published in print
 Pages: 4
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1364/OL.43.004329
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Title: Optics Letters
Source Genre: Journal
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Publ. Info: Washington : Optical Society of America
Pages: - Volume / Issue: 43 (18) Sequence Number: - Start / End Page: 4329 - 4332 Identifier: ISSN: 0146-9592
CoNE: https://pure.mpg.de/cone/journals/resource/954925474435