An influence of the absolute phase of THz pulse on linear and nonlinear medium response

Vyacheslav A. Trofimov; Svetlana A. Varentsova; Norbert Palka; Mieczyslaw Szustakowski; Tomasz Trzcinski; Sheng Lan; Hai-Ying Liu

doi:10.1117/12.903558

11 August 2011 An influence of the absolute phase of THz pulse on linear and nonlinear medium response

Vyacheslav A. Trofimov, Svetlana A. Varentsova, Norbert Palka, Mieczyslaw Szustakowski, Tomasz Trzcinski, Sheng Lan, Hai-Ying Liu

Author Affiliations +

Proceedings Volume 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications; 81951W (2011) https://doi.org/10.1117/12.903558
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

The influence of an absolute phase of the THz pulse with a few cycles on the spectrum and spectral dynamics of signal reflected from or transmitted through the explosive or paper sheet is analyzed for problems of the detection and identification of explosive. The signal was measured on the long-term interval with duration about 180 ps and contains both the main reflected THz pulse and the subpulse with less intensity. Two cases of the reflection (normal and specular reflection) of the THz pulse from the RDX are considered. For the THz pulse interaction with the paper sheet the transmission mode is analyzed. Dependence of the nonlinear response of substance from the absolute phase of pulse is illustrated by examples of SHG or self-action of laser pulse with a few cycles. We showed that the absolute phase of pulse plays one of the key roles for the detection and identification of the substances at the reflection mode. It is necessary to investigate this problem with big attention during next few years.

Citation Download Citation

Vyacheslav A. Trofimov, Svetlana A. Varentsova, Norbert Palka, Mieczyslaw Szustakowski, Tomasz Trzcinski, Sheng Lan, and Hai-Ying Liu "An influence of the absolute phase of THz pulse on linear and nonlinear medium response", Proc. SPIE 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications, 81951W (11 August 2011); https://doi.org/10.1117/12.903558

ACCESS THE FULL ARTICLE

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