alexa Standoff Quantum Cascade Laser Photoacoustic Spectrosco
ISSN: 2469-410X

Journal of Lasers, Optics & Photonics
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article

Standoff Quantum Cascade Laser Photoacoustic Spectroscopy based Explosive Detection System

Ramesh C Sharma*, Gupta S, Deepak K, Sanchit G and Chandra H

Laser Science & Technology Centre, DRDO, Delhi, India

*Corresponding Author:
Ramesh C Sharma
Laser Science & Technolgy Centre
DRDO, Delhi, 110054, India
Tel: 04024347630
E-mail: [email protected]

Received Date: August 26, 2014; Accepted Date: October 31, 2014; Published Date: November 10, 2014

Citation: Sharma RC, Gupta S, Deepak K, Sanchit G, Chandra H (2014) Standoff Quantum Cascade Laser Photoacoustic Spectroscopy based Explosive Detection System. J Laser Opt Photonics 1:109. doi:10.4172/2469-410X.1000109

Copyright: © 2014 Sharma RC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

This paper focuses on the design and development of measurement technique and processing of signal for the detection of various explosive simulants like RDX(cyclo-trimethylene-tri-nitramine), TNT(Trinitro toluene), Sarin, TATP(Tri acetone triperoxide), their simulants like nitrobenzene, DNT(Dinitro toluene), DMMP(DiMethyl Methyl Phosphonate), acetone, propanol, etc. (in different states of matter) adsorbed on a metallic surface from a standoff distance ranging from few meters up to a distance of 25 meters in the wavelength range of 7-9 μm. The focus also lies on the measurement methodologies and the instrumentation employed in these systems. A dedicated single screen, single user, user friendly Graphical User Interface(GUI) for controlling the entire system, acquisition and processing of the incoming signal and demonstration of results has been developed with the help of Laboratory Virtual Instrument Engineering Workbench (LABVIEW). The dual phase sensitive detection technique has been employed. The “Data Acquisition for Explosive Detection System” (DAEDS) also carries out precise operation sequencing, parameter control, parameter measurement and storage of data. The incoming signal profile has been normalized with respect to the reference laser profile to obtain the resultant graph. Various experiments have been conducted and the resultant graphs have been plotted with intensity on the y-axis and wave-number on the x-axis as shown in the results section of this paper. Furthermore, online determination of the explosive or the simulant has been carried out. An engineering proto-type system has been developed which indicates the detected explosive/ simulant using the developed software.

Share This Page

Additional Info

Loading
Loading Please wait..
 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords