NDLI: The spectrum of THz radiation from plasma produced by strong multicolor optical fields

Content Provider	IEEE Xplore Digital Library
Author	Babushkin, I. Skupin, S. Kohler, C. Berge, L. Herrmann, J.
Copyright Year	2011
Description	Author affiliation: CEA-DAM, DIF, F-91297 Arpajon, France (Berge, L.) \|\| Weierstraß-Institut für Angewandte Analysis und Stochastik, Mohrenstr, 39, 10117 Berlin, Germany (Babushkin, I.) \|\| Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany (Skupin, S.; Kohler, C.) \|\| Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 2a, 12489 Berlin, Germany (Herrmann, J.)
Abstract	Ionization process in strong optical field attracts much attention in the context of high-order harmonic generation, which is produced by electrons returning to their parent ions. Recently it was found that the ionization process itself, without returning-back mechanism, can produce a strong radiation in another edge of the spectrum, namely in the THz range [1,2]. The resulting THz pulses are short (down to single cycle durations), coherent, intense and broadband. Such THz radiation can be of high demand for the ultrafast THz and far-infrared spectroscopy. A setup often used to produce such THz emission is rather simple: a strong optical pulse with center frequency ω (typically corresponding to 800 nm wavelength) is sent to a BBO crystal in order to produce its second harmonic 2ω and strongly focused afterwards to create a plasma spot in a noble gas. Due to the asymmetry of the resulting field, the photoionization plasma current develops a low-frequency component in the THz range. This leads to an electromagnetic radiation which also contains a low-frequency part. Comparison of numerical simulations with experiments [3] shows that in this typical setup the plasma mechanism overcomes the other possible ones, such as four wave mixing.
Starting Page	1
Ending Page	1
File Size	243119
Page Count	1
File Format	PDF
ISBN	9781457705335
e-ISBN	9781457705328
DOI	10.1109/CLEOE.2011.5942885
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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