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Title: Wavelength scaling of terahertz generation via two color photoionization in pre-formed plasma
Authors: Huang, S
Zhao, H
Zhang, C
Zhang, L
Issue Date: 2016
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2016, v. 10030, 100301T
Abstract: For further understanding of the mechanism regarding terahertz (THz) wave generation in laser-induced plasma, the pump wavelength dependence of THz emission is examined when two-color laser fields are mixed in pre-formed plasma created by another 800nm laser pulse. In our experiment, the effect of pre-formed plasma is investigated using an orthogonal pumping geometry. With a pre-formed plasma, the power of THz wave generated by the pump pulse reduces significantly, and the THz modulation increases with the growth of pump wavelength. Possible reason for the result is discussed in terms of tunneling ionization in the THz generation mechanism.
Keywords: Orthogonal pumping geometry
Pre-formed plasma
THz modulation
Tunneling ionization
Wavelength scaling
Publisher: SPIE-International Society for Optical Engineering
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
ISBN: 9781510604797
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.2245846
Description: Infrared, Millimeter-Wave, and Terahertz Technologies IV, Beijing, China, 12-14 October 2016
Appears in Collections:Conference Paper

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