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Title: Detection of Broadband Terahertz Waves with a Laser-Induced Plasma in Gases

Abstract

We report the experimental results and theoretical analysis of broadband detection of terahertz (THz) waves via electric-field-induced second-harmonic generation in laser-induced air plasma with ultrashort laser pulses. By introducing the second-harmonic component of the white light in the laser-induced plasma as a local oscillator, coherent detection of broadband THz waves with ambient air is demonstrated for the first time. Our results show that, depending on the probe intensity, detection of THz waves in air can be categorized as incoherent, hybrid, and coherent detection. Coherent detection is achieved only when the tunnel ionization process dominates in gases.

Authors:
; ;  [1]
  1. Center for Terahertz Research, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)
Publication Date:
OSTI Identifier:
20860789
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 97; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevLett.97.103903; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AIR; ELECTRIC FIELDS; HARMONIC GENERATION; IONIZATION; LASERS; OSCILLATORS; PLASMA; PULSES; THZ RANGE; VISIBLE RADIATION

Citation Formats

Jianming, Dai, Xu, Xie, and Zhang, X -C. Detection of Broadband Terahertz Waves with a Laser-Induced Plasma in Gases. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.97.103903.
Jianming, Dai, Xu, Xie, & Zhang, X -C. Detection of Broadband Terahertz Waves with a Laser-Induced Plasma in Gases. United States. https://doi.org/10.1103/PHYSREVLETT.97.103903
Jianming, Dai, Xu, Xie, and Zhang, X -C. 2006. "Detection of Broadband Terahertz Waves with a Laser-Induced Plasma in Gases". United States. https://doi.org/10.1103/PHYSREVLETT.97.103903.
@article{osti_20860789,
title = {Detection of Broadband Terahertz Waves with a Laser-Induced Plasma in Gases},
author = {Jianming, Dai and Xu, Xie and Zhang, X -C},
abstractNote = {We report the experimental results and theoretical analysis of broadband detection of terahertz (THz) waves via electric-field-induced second-harmonic generation in laser-induced air plasma with ultrashort laser pulses. By introducing the second-harmonic component of the white light in the laser-induced plasma as a local oscillator, coherent detection of broadband THz waves with ambient air is demonstrated for the first time. Our results show that, depending on the probe intensity, detection of THz waves in air can be categorized as incoherent, hybrid, and coherent detection. Coherent detection is achieved only when the tunnel ionization process dominates in gases.},
doi = {10.1103/PHYSREVLETT.97.103903},
url = {https://www.osti.gov/biblio/20860789}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 10,
volume = 97,
place = {United States},
year = {Fri Sep 08 00:00:00 EDT 2006},
month = {Fri Sep 08 00:00:00 EDT 2006}
}