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Reflection/Backscattering Probes

R-series Fiber Optic Reflection Probes couple to our spectrometers and light sources to create small-footprint optical-sensing systems for measuring reflection and fluorescence from solid surfaces, or backscattering and fluorescence in liquids and powders. Reflection probes can be optimized for the UV/VIS (250-800 nm) or VIS/NIR (400-2100 nm), or a combination of both ranges.

Features

Application Versatility. Measure reflection and fluorescence from solid surfaces, or backscattering and fluorescence in liquids and powders
UV-VIS or VIS-NIR Wavelength Ranges. Optimize the probe for the UV/VIS (250-800 nm) or VIS/NIR (400-2100 nm), or a combination of the UV-VIS and VIS/NIR
Multiple Probe Options. Options include your choice of ferrule material (stainless steel or plastic) and probe window design (standard or angled to 30°)

Standard Reflection Probes

The R400-7, R200-7 and R600-7 each consists of a tight bundle of 7 optical fibers in a stainless steel ferrule -- 6 illumination fibers around 1 read fiber. The fibers in the R200-7 are 200 µm in diameter, the fibers in the R400-7 are 400 µm in diameter, and the fibers in the R600-7 are 600 µm in diameter.

Non-metallic Ferrule Option

The RP200-7 consists of a bundle of 200-µm fibers in the same 6-around-1 design. The probe has a plastic ferrule that is useful for applications where non-metallic probes are required, such as those involving corrosive samples.

Reference-Fiber Probe for Monitoring a Light Source

The R200-REF consists of an R200-7 and an additional fiber to monitor an illumination source. The R200-REF is useful for any reflection experiment in which variation or instability in the spectral output of the light source is likely to have an impact on the spectral data.

Angled Probe for Liquids and Powders

The R400-ANGLE also has a 6-around-1 fiber design, but employs a 30° window to remove specular reflection effects when immersed in dense liquids and powders.

Probe for Expanded Wavelength Coverage

The R200-MIXED has 14 fibers -- 6 UV/VIS and 6 VIS/NIR illumination fibers, plus 1 UV/VIS read fiber and 1 VIS/NIR read fiber. The probe couples easily to a dual-channel spectrometer in which each channel is set for a different wavelength range.

Reflection Probe Holders

The RPH-1 and RPH-2 are anodized aluminum platforms with machined holes at 45° and 90°, to hold probes during measurements. The RPH-1 holds 6.35-mm (1/4") diameter probes but with the RPH-ADP -- an adapter that fits on the RPH-1 -- you can secure 3.17-mm (1/8") probes as well. The RPH-2 is for use with SMA 905-terminated optical fibers only. Cap screws secure the probes.
RPH-1: $104
RPH-ADP: $81
RPH-2: $120

Specifications

Fiber core diameter:	200 µm, 400 µm or 600 µm
Fiber core/cladding:	silica
Fiber bundle:	6 illumination fibers around 1 read fiber
Optimization:	UV-VIS (250-800 nm) VIS-NIR (400-2100 nm)
Ferrule:	Stainless steel or plastic
Ferrule dimensions:	3.0" x 0.25"
Numerical aperture:	0.22
Terminations for illumination and read legs:	SMA 905
Sheathing:	Blue PVC with Kevlar reinforcement
Temperature range:	-20 °C to 80 °C
Probe assembly length:	2 meters (breakout is halfway)

Reflection/Backscattering Probes -- Options

Probe	Description	Price
R200-7-UV/VIS R200-7-VIS/NIR	6 illumination fibers around 1 read fiber bundle 200 µm fiber diameter Stainless steel ferrule probe (1/4") Reflection from solid surfaces or backscattering/fluorescence in liquids	$461
R400-7-UV/VIS R400-7-VIS/NIR	6 illumination fibers around 1 read fiber bundle 400 µm fiber diameter Stainless steel ferrule probe (1/4") Reflection from solid surfaces or backscattering/fluorescence in liquids	$577
R600-7-UV/125F R600-7-VIS/125F	6 illumination fibers around 1 read fiber bundle 600 µm fiber diameter Stainless steel ferrule probe (1/8") Reflection from solid surfaces or backscattering/fluorescence in liquids	$808
RP200-7-UV/VIS	6 illumination fibers around 1 read fiber bundle 200 µm fiber diameter Plastic ferrule probe Reflection from solid surfaces or backscattering/fluorescence in liquids; plastic ferrule is more suitable for some samples, especially liquids that can rust or corrode stainless steel	$577
R200-REF-UV/VIS R200-REF-VIS/NIR	R200-7 with an additional fiber to monitor an illumination source 200 µm fiber diameter Stainless steel ferrule probe Reflection from solid surfaces or backscattering/fluorescence in liquids; separate fiber optic for monitoring light source	$635
R200-12-MIXED	14 fibers -- 6 UV/VIS and 6 VIS/NIR illumination fibers, plus 1 UV/VIS read fiber and 1 VIS/NIR read fiber 200 µm fiber diameter Stainless steel ferrule probe Reflection from solid surfaces or backscattering/fluorescence in liquids; couples to dual-channel spectrometer to measure samples across UV-VIS-Shortwave NIR	$866
R200-ANGLE-UV R200-ANGLE-VIS	6 illumination fibers around 1 read fiber 200 µm fiber diameter Stainless steel ferrule with 30° window Backscattering/fluorescence in dense liquid and powders	$577
R400-ANGLE-UV R400-ANGLE-VIS	6 illumination fibers around 1 read fiber 400 µm fiber diameter stainless steel ferrule with 30° window Backscattering/fluorescence in dense liquid and powders	$692
RPH-1	Anodized aluminum holder for reflection probes; holds probe in place at 45° and 90° to the surface. Holds 6.35-mm (1/4") diameter probes. Use the RPH-ADP to secure 3.17-mm (1/8") probes.	$104
RPH-ADP	Adapter for RPH-1. Secures 3.17-mm (1/8") diameter probes.	$81
RPH-2	Anodized aluminum platform with machined holes at 45° and 90°, to hold probes during measurements. The RPH-2 is for use with SMA 905-terminated optical fibers only.	$120

Sample Applications

Reflection from Solid Surfaces for Color and Appearance, Chemical Composition	Backscattering in Liquids and Powders for Color and Appearance, Chemical Composition
Plastics, metals, paints and coatings; thin films and optical filters	Milk and other beverages
Inks, dyes and graphics arts	Paints, inks and dyes
Industrial textiles and clothing	Resins and bulk powders
Biomedical samples such as human skin and other cellular tissue	Suspended particulate matter in slurries and turbid liquids
Plants, marine life	Fluorescence of liquid samples

Contact an Ocean Optics Applications Scientist