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.
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Key Features
- 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 690-7
Applications
- Biomedical
- Biotechnology
- Material Analysis
- Food and Drink
- Chemical
- Pharmaceutical
- Petrochemical
- R & D
Specifications
Common Parameters of Raman Fiber Optic Probes
| Laser Wavelength | 650 – 785 nm, 1000 – 1064 nm |
| Fibers | 1 + 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) |
| Lens | Fused Silica, Sapphire or NBK-7 glass (1 or 2mm dia.) |
| Total Length | 1.5m (other length on special request) |
| Shaft (needle) Length | 50 – 150mm (other length on special request) |
| Shaft (needle) Diameter | 1.5 or 3mm |
| Length of Legs | 0.3 – 1m |
| Minimal Bending Radius | 130 mm |
| Input / Output Connectors | Excitation – FC/PC; Detection – SMA905 |
| Shaft | Stainless Steel |
| Protective tubing | Silicon coated Stainless Steel Conduit |
| Temperature range | -40 to 150°C |
| Pressure limits | 0–7 Bar (100 PSI) |