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Experimental Set-Up for the Design of Deep Ultraviolet Raman Spectroscopic Applications for Standoff Detection of Hazardous Substances

Duschek, Frank and Gallo, Emanuela and Kölbl, Christoph and Walter, Arne and Köhntopp, Anja (2018) Experimental Set-Up for the Design of Deep Ultraviolet Raman Spectroscopic Applications for Standoff Detection of Hazardous Substances. XXVI International Conference on Raman Spectroscopy (ICORS), 26-30 Aug 2018, Jeju, Korea.

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Abstract

Despite its immediate applications, selective detection of trace quantities of surface adsorbed chemicals, such as explosives, without physically collecting the sample molecules is a challenging task. Standoff spectroscopic techniques offer an ideal method of detecting chemicals without using a sample collection step. Though standoff spectroscopic techniques are capable of providing high selectivity, their demonstrated sensitivities often are poor. Especially, Raman spectroscopy promises highest selectivity, but a number of challenges have to be managed in order to succeed in the detection of tiny amounts of substances [1-3]. In order to manage standoff Raman spectroscopic challenges, i.e. retrieving spectral signatures of traces on an unknown, possibly fluorescent background, measuring in an open, public environment and under deep UV conditions, a basic setup for the standoff detection of trace quantities of surface adsorbed chemicals using deep UV Raman is described and characterized at an excitation wavelength of 264 nm. This set-up promises to be an aid for future, compact UV Raman equipment for standoff applications from ~2 m and above.

Item URL in elib:https://elib.dlr.de/141616/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Set-Up for the Design of Deep Ultraviolet Raman Spectroscopic Applications for Standoff Detection of Hazardous Substances
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Duschek, FrankFrank.Duschek (at) dlr.deUNSPECIFIED
Gallo, EmanuelaEmanuela.Gallo (at) dlr.deUNSPECIFIED
Kölbl, ChristophChristoph.Koelbl (at) dlr.deUNSPECIFIED
Walter, ArneArne.Walter (at) dlr.deUNSPECIFIED
Köhntopp, AnjaAnja.Koehntopp (at) dlr.deUNSPECIFIED
Date:August 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Raman spectroscopy
Event Title:XXVI International Conference on Raman Spectroscopy (ICORS)
Event Location:Jeju, Korea
Event Type:international Conference
Event Dates:26-30 Aug 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing
Location: Lampoldshausen
Institutes and Institutions:Institute of Technical Physics > Atmospheric Propagation and Effect
Deposited By: Gallo, Ph.D. Emanuela
Deposited On:30 Mar 2021 09:34
Last Modified:30 Mar 2021 09:34

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