Home > Explosives Detection > Technology > Molecular Spectroscopy > Raman Spectroscopy (Raman)

Raman spectroscopy is a technique that measures the energy of photons generated by the inelastic scattering of monochromatic excitation photons. During excitation, photons interact with the electron cloud of an analyte and a small percentage of these photons undergoes a change in energy as a result of the interaction. This energy change corresponds with molecular vibrations, rotations, and other low-frequency modes and is plotted by instrumental operating software to produce a spectrum. Raman spectroscopy is often described as a complimentary technique to FTIR because both techniques are used to probe vibrational energy levels although different selection rules allow FTIR and Raman to interrogate different sets of molecular vibrations. Raman scattering is an inherently low probability phenomenon and as such, the Raman scattering cross-section of a particular analyte will generally be several orders of magnitude less than the corresponding FTIR absorption cross-section. Practically, this means that the sensitivity of Raman spectroscopy is lower than FTIR spectroscopy. There are several advanced Raman spectroscopy techniques that generate a stronger Raman intensity when compared to spontaneous Raman scattering such as Coherent Anti-Stokes Raman Spectroscopy (CARS), Resonance Raman Spectroscopy, Surface Enhanced Raman Spectroscopy (SERS) and Tip Enhanced Raman Spectroscopy (TERS).

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Smiths Detection, Inc. (2)
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Thermo Fisher Scientific, Inc. (6)
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ACE-ID

ACE-ID

Smiths Detection, Inc.

The ACE-ID is a handheld Raman identifier for solid & liquid explosives, precursors, narcotics and t...

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Agility™

Agility™

Bay Spec

BaySpec's Agility™ Raman spectrometer delivers high sensitivity and repeatability in an affordable, ...

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Bravo

Bravo

Bruker Corporation

A hand-held Raman spectrometer with patented fluorescence mitigation SSE™(Sequentially Shifted Excit...

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CBEx

CBEx

Snowy Range Instruments

Handheld Raman spectrometer with 785 nm or 1064 nm excitation laser for non-contact analysis of liqu...

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CBEx 1064

CBEx 1064

Snowy Range Instruments

Handheld Raman spectrometer with 1064 nm excitation laser for non-contact analysis of liquids, gels,...

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Chem 500

Chem 500

SciAps, Inc.

The Chem-500 features continuous and preset adjustable laser focus. Eliminate the most common error ...

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DXR/SERS Analysis Package

DXR/SERS Analysis Package

Thermo Fisher Scientific, Inc.

The Thermo Scientific DXR/SERS Analysis Package combines the speed, sensitivity, and specificity of...

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Eagle

Eagle

ChemImage Sensor Systems

Eagle combines microscopic examination, Raman spectroscopy and fluorescence spectroscopy for rapid i...

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Falcon II

Falcon II

ChemImage Sensor Systems

The FALCON II is a Wide-field Raman Chemical Imaging System optimized for both chemical imaging and ...

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Fido® Verdict

Fido® Verdict

FLIR Systems, Inc.

This product is not available.

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FirstDefender

FirstDefender

Thermo Fisher Scientific, Inc.

The Ahura FD is a hand-held Raman spectrometer designed for on-site identification of unknown solids...

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FirstDefender RM

FirstDefender RM

Thermo Fisher Scientific, Inc.

FirstDefender® RM is an upgraded version of the FirstDefender. The FirstDefender RM is a hand-held R...

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FirstDefender RMX

FirstDefender RMX

Thermo Fisher Scientific, Inc.

The FirstDefender RMX is a hand-held Raman spectrometer designed for onsite identification of unknow...

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FIRSTGUARD

FIRSTGUARD

Rigaku Analytical Devices

Handheld identification of solids, liquids, powders and other materials. Choice of 532, 785 or 1064...

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Flex Probe

Flex Probe

Thermo Fisher Scientific, Inc.

FlexProbe is an accessory for the FirstDefender handheld Raman system.

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Gemini

Gemini

Thermo Fisher Scientific, Inc.

The Gemini by Thermo Fisher Scientific is a handheld, combination FTIR/Raman spectrometer designed t...

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