Raman Fiber Optic Probes

Raman Fiber-Optic Probes are miniaturized without compromising its performance, which is enabled by the technology of direct deposition of the dielectric filters at the fiber end faces. It results in a small, cost-effective Raman probe for endoscopic and other applications.
The fiber optic Raman probe is produced for multi-wave excitation in the range 690-785 nm and 1000 – 1064 nm, e.g. @785nm – “Fingerprint” spectral range with fluorescence reduction, and @690nm – “High wavenumber” spectral range for conventional Raman spectrometers.

  • Ball lens sealed at sensing tip of a 3 mm diameter shaft
  • Optical filters deposited on fiber ends by a patented process
  • Metal coated fibers used to block cross-talk and suppress fluorescence from a polymer jacket
  • Compact immersible probe with S/N to use for in-situ real-time contact analysis of liquids, tissues a, d powders
  • Multilayer filters design for laser excitation in a broad range of wavelength 690-785 nm
  • Biomedical
  • Biotechnology
  • Material Analysis
  • Food and Drink
  • Chemical
  • Pharmaceutical
  • Petrochemical
  • R & D

Common Parameters of Raman Fiber Optic Probes

Laser Wavelength650 – 785 nm, 1000 – 1064 nm
Fibers1 + 9 (one excitation & 9 collection fibers; core: 100 or 200 µm)
Long-pass filter transmission range @785 nm: 820 – 1100nm (> 90%);
@1064 nm: 1100 – 1800nm(> 90%)
Long-pass filter blocking range @785 nm: 650 – 800nm(OD > 6);
@1064 nm: 1000 – 1080nm(OD > 6)
Short-pass filter transmission range @785 nm: 650 – 790nm (> 90%);
@1064 nm: 1000 – 1070nm (> 90%)
Short-pass filter blocking range @785 nm: 800 – 950nm (OD > 6);
@1064 nm: 1080 – 1500nm (OD > 6)
LensFused Silica, Sapphire or NBK-7 glass (1 or 2mm dia.)
Total Length1.5m (other length on special request)
Shaft (needle) Length50 – 150mm (other length on special request)
Shaft (needle) Diameter 1.5 or 3mm
Length of Legs 0.3 – 1m
Minimal Bending Radius130 mm
Input / Output Connectors Excitation – FC/PC; Detection – SMA905
ShaftStainless Steel
Protective tubingSilicon coated Stainless Steel Conduit
Temperature range -40 to 150°C
Pressure limits 0–7 Bar (100 PSI)