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User-Configurable Fibre Optic Raman Probes

Optimised Fibre Optic Raman Probes for Wasatch Spectrometers

Wasatch’s innovative Raman probe design features a modular, user-replaceable tip and fibres, which allows you to configure and reconfigure your sampling optics optimised for each new application. Choose from a standard probe tip, a longer ball probe for process applications, or a unique SM05 adaptor with 12.7mm lenses to access focal lengths ranging from sub-mm to up to 50mm from the probe tip. All probes are optimised for use with Wasatch’s f/1.3 Raman spectrometers to maximise collection efficiency and signal-to-noise ratio (SNR).

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Probe Type

Standard Raman Probe

Ball Probe for Contact or Immersion

Probe with Custom Lens Adaptor

Key Features

  • Works well for most Raman applications
  • Easy reconfiguration by the user
  • Fibres for routing excitation light from the laser and collected light to the spectrometer are included to optimise signal and reduce data acquisition time
  • Available for 405, 532, 633, 785, 830, or 1064 nm Raman
  • Custom designs available upon request
  • Ideal for process or direct contact measurements
  • Sapphire ball probe tip for touch sample focus
  • Probe barrel: 292mm long SS316L or hastelloy
  • Suitable for high temperature & pressure
  • Available for 532 and 785nm Raman
  • Custom designs available upon request
  • Quickly and easily test out focal length and spot size
  • SM05-threaded adapter to fit 12.7mm diameter optics
  • Broadband lens kit: 4, 22, and 50mm focal lengths
  • Compatible with other off-the-shelf coupling components
  • Allows connection to microscope or custom optical setup
  • Custom designs available upon request
Standard Raman Probe

Excitation Wavelength

405, 532, 633, 785, 830, or 1064nm

Collection Optics

f/1.3

Laser Spot Size

~170μm

Collection Area

1mm diameter spot when using 600µm collection fibre

Collection Distance

11mm (lens to sample)

Laser Band Pass Filter

3nm bandwidth, >OD 6 out of band rejection

Long pass/Edge Filter

>80% transmission, laser line blocking >OD 6

Probe Barrel

12.7mm diameter stainless steel, 38 mm long

Wasatch’s standard probes have been used in a wide variety of applications, including identification of plastics. The new contact ball probe tip has proven ideal as a Raman process probe to monitor fermentation of sugar. It has also been used with ultrasonic capture for in-situ detection of microplastics – see Spectroscopy magazine’s June 2020 special issue on Raman.

Brochures

 

Videos

  • Raman TV – The YouTube channel from Wasatch Photonics about Raman Spectroscopy
  • ENLIGHTEN – Spectroscopy Software Tutorial Series
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