ATR-Raman-Transflection Multichannel Probe

Main features

NIR transflection, ATR Mid-IR and Raman channels used in parallel for R&D and
in-line PAT
10 mm distance between channels
Sapphire windows
Diamond (Silicon) ATR crystal
Hastelloy C22 shaft
25mm Outer Diameter
two channels version is available (ATR and Transflection)

Description

The multichannel fiber-optic probe is a unique development by art photonics, enabling simultaneous measurements in liquids using different spectroscopic methods: Raman, NIR Transflection, and ATR Mid-IR.
All three measurement channels are integrated into a single housing and positioned 10 mm apart. This configuration allows for more accurate characterization of both qualitative and quantitative information on the chemical composition of liquids.

Additionally, there is a version of this probe with two channels — ATR and Transflection — for applications where Raman measurements are not required.

Specs

NIR-ATR-Raman combi-probe Specification
Probe Channel	Silicon ATR / Diamond ATR	NIR	Raman
Spectral Range	3.2-17µm (3100 - 600cm-1) / 5.2-17µm (1900-600cm-1)	900-2500 nm (12000-4000cm-1)	100-3200cm-1 @785nm laser
Fiber Type	silver halide AgClBr fibers 900/1000µm	low OH Fused Silica NIR600/660µm	low OH Fused Silica: NIR105/125µm for illumination and NIR300/330 for collection
Tip Material	Silicon / Diamond	Sapphire window	Sapphire window
Sealing Material	PEEK	PTFE	PTFE
Optics	Silicon or Diamond	Hastelloy C22 mirror; Optical pathlength: 2mm; Gap: 1mm	Optical filters and mirrors for a Raman setup with 785 nm excitation laser
Termination	2 x SMA905	2 x SMA905	2 x FC/PC
Measuring points distance between channels	approx. 10 mm
Shaft Sealing Material	FFKM O-Rings
Shaft Material	Hastelloy C22
Minimal Bending Radius	130mm
Shaft Size	OD = 25mm, length = 505±5mm
Total Length	shaft + fiber = 6.5±0.05m
Protection	PVC coated steel tubing
Pressure range	0– 10 Bar
Temperature range for the probe shaft	0°C to +120°C
Temperature range for the probe legs	0°C to +60°C