Standard and Stand-Off Raman Probes

About our Raman Probes

Standard and Stand-off Raman Probes

When a sample is large, in a hazardous or high-temperature environment, or for any reason, difficult to bring to a spectrometer, a probe provides the ideal solution for getting real-time observations.

As with Raman spectrometers, a Raman probe is used to measure the inelastic scattering of light from a sample. Raman scattering is produced when the energy levels of photons are shifted up or down as a result of excitation by a monochromatic source (usually a laser). The change in vibrational frequency is used to determine the composition of a target substance.

A Raman probe focuses the laser on the sample, collects the scattered light and feeds it back to the spectrometer.

Our Raman probes are ideally suited for coupling with our range of high etendue HES spectrometers. We currently offer two probes: the Standard Raman Probe for close or contact measurements, or the Stand-Off Raman Probe, capable of making measurements from a distance of up to 3 metres.

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Product Specifications

RP1000 Raman Probe for Stand-Off Measurements

RP1000 Raman Probe for Stand-Off Measurements

Our Stand-Off Raman probe can make measurements from distances of up to 3 meters from the target.

Our Stand-Off Raman Probes are fitted with the highest quality optical filters to suppress any unwanted laser and have focal lengths from 50 mm up to 3 m.

These probes are designed to work seamlessly with the ISI range of HES spectrometers with etendue characteristics to match and designed to minimise unwanted background light. This allows for maximum light collection even at distance. Our Stand-Off Raman probe can be fitted to a robotic arm for deployment by ROV, ideal for remote sensing in hazardous environments.

Our Raman probe is currently being used in the nuclear decommissioning sector to remove the human element from the detection of substances in gloveboxes.

Front Panel Features:

  • Continuous frame and single frame capture options
  • FVB/2D modes
  • Image, FFT and spectrum display options
  • Frame averaging
  • Peak Labelling
  • Dark image subtraction
  • Spectra overlay function
Spectra shown was captured in 1s using a HES2000 Raman spectrometer

Spectra shown was captured in 1s using a HES2000 Raman spectrometer coupled to an RP1000 Raman probe via a 0.22NA 910 µm optical fibre. A 105 µm fibre coupled PDLD 500mW 785nm laser was used to excite the target paracetamol tablet sample.

Stand-Off Raman Probe Specification

The specifications given below are for the standard RP1000, but the unit is customisable to operate between 500 mm and 1500 mm standoff distances and may be adapted to operate at alternative Raman excitation wavelengths.

Feature Detail
Raman operating λ 785 nm
Configuration Mirrored obscuration and lens combination confocal
Standoff distance (from 100mm diameter window) 1000 mm
Laser fibre connection FC/PC
Spectrometer fibre connection SMA
Dimensions L: 360mm (inc. fibre gland) Max W: 140mm
Mass ~ 1.8 kg

The fibre coupled RP1000 Raman probe is designed to operate with the HES2000 spatial heterodyne Raman spectrometer. Operating at a 1000 mm standoff distance from the 100mm diameter window, the probe will facilitate non-destructive interrogation of target samples to capture material-specific Raman spectra.

Applications include:
  • Quality control during steelmaking processes
  • Composition monitoring in Ceramics
  • Identification of liquids in pressurised gas pipelines
  • Identification of multiple gas species in gas pipelines
  • Deployment in nuclear environments

Product Specifications

IS-Instruments Raman Probe

Standard Raman Probe

The fibre coupled RP50 Raman probe is designed to operate with the HES2000 spatial heterodyne spectrometer.

Operating at a 2mm standoff distance from the enclosure aperture, the probe will facilitate non-destruction interrogation of target samples to capture material-specific Raman spectra.

The specifications given are for the standard RP50. Please get in touch for further details or customisation options including alternative Raman excitation operating wavelengths.

RP50 – Standard Raman Probe

Feature Detail
Raman operating λ 785 nm
Configuration Dichroic mirror-based confocal
Standoff distance

(from enclosure aperture)

25 mm
Laser fibre connection FC/PC
Spectrometer fibre connection SMA
Dimensions 160 x 100 x 50 mm
Mass < 500g
Front Panel Features:
Spectra shown was captured in 1s using a HES2000 Raman spectrometer
  • Continuous frame and single frame capture options
  • FVB/2D modes
  • Image, FFT and spectrum display options
  • Frame averaging
  • Peak Labelling
  • Dark image subtraction
  • Spectra overlay function