Home > Chemical 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).

Raman instruments are available in a variety of configurations.  The most common instruments are bench top models but a wide variety of portable and handheld models are also available commercially. Instrument cost ranges from approximately $10,000 to approximately $100,000.

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Airsense Analytics (1)
Anton Paar (2)
B&W Tek, Inc. (2)
Bay Spec (8)
Bio Tools (2)
Bruker Corporation (1)
ChemImage Sensor Systems (2)
Chemring Detection Systems (2)
Cobalt Light Systems Ltd (6)
Field Forensics, Inc. (1)
FLIR Systems, Inc. (1)
GE Measurement and Control (1)
Horiba Scientific (1)
IMRA America Inc. (1)
InPhotonics, Inc. (3)
Intevac (2)
Jasco, Inc. (1)
Portendo AB (1)
Real-Time Analyzers, Inc. (2)
Rigaku Analytical Devices (5)
SciAps, Inc. (5)
Serstech (1)
Smiths Detection, Inc. (3)
Snowy Range Instruments (4)
Thermo Fisher Scientific, Inc. (9)
TSI, Inc. (4)
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$10,000 - $20,000 (6)
$20,000 - $50,000 (12)
$50,000 - $100,000 (7)
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mg (27)
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µ-ChiralRAMAN-2X™

µ-ChiralRAMAN-2X™

Bio Tools

The µ-ChiralRAMAN-2X is a dedicated commercial spectrometer for the measurement of Raman Optical Act...

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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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ASSURx

ASSURx

TSI, Inc.

The ASSURx is a handheld Raman analyzer with a gun-style, point and shoot design.

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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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Cora 5X00

Cora 5X00

Anton Paar

The Cora 5X00 is a transportable Single or Dual-wavelength Benchtop Raman Spectrometer. Single-wavel...

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Cora 7X00

Cora 7X00

Anton Paar

The Cora 7X00 series delivers spectral information without internal algorithms processing spectra ...

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DXR™2 SmartRaman

DXR™2 SmartRaman

Thermo Fisher Scientific, Inc.

The DXR™2 SmartRaman scans from 3500 to 50cm-1 with a High-Resolution Grating of 1800-50cm-1. Incorp...

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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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EZRaman-H

EZRaman-H

TSI, Inc.

The EZRaman-H is a handheld Raman analyzer for general purpose, including rapid material identificat...

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EZRaman-I

EZRaman-I

TSI, Inc.

The EZRaman-I Series are high-sensitivity field portable Raman instruments suitable for laboratory a...

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EZRaman-N

EZRaman-N

TSI, Inc.

The EZRaman-N system features a narrow linewidth frequency stabilized laser, high throughput fiber o...

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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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