CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11209 > Article
Paper
20 December 2019 Intense terahertz waves generated by three-color laser with different frequency ratios
Hanqi Wang, Wenhui Fan
Author Affiliations +
Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 1120951 (2019) https://doi.org/10.1117/12.2549974
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China
Abstract
Femtosecond laser-induced air plasma can generate terahertz waves. The sawtooth-like asymmetric photoelectric field can be made by the superposition of three-color laser with appropriate amplitude ratio, frequency ratio and phase difference. Based on the transient photocurrent model and numerical simulation, it is found that intense terahertz waves can be generated by the sawtooth-like asymmetric photoelectric field with different frequency ratios of three-color femtosecond laser, such as 1:2:4 and 1:2:6. By investigating time-varying parameters, such as electron density, electron velocity and photocurrent density, it was further demonstrated that the shape of the asymmetric photoelectric field plays an important role in the formation of net photocurrent and the generation of terahertz waves. The investigation will be helpful to the development of key techniques on intense terahertz waves generated by laser-induced air plasma.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Hanqi Wang and Wenhui Fan "Intense terahertz waves generated by three-color laser with different frequency ratios", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120951 (20 December 2019); https://doi.org/10.1117/12.2549974
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 7 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Terahertz radiation
Plasma
Numerical simulations
Ionization
Plasma generation
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top