Fiber Optic ATR Loop Probe

Main features:

  • High throughput in the Mid Infrared range
  • Online absorbance spectroscopy for liquids, pastes, and soft solid surfaces
  • Compatibility with all FTIR, QCL, and IR-Filter spectrometers
  • Cost-effective alternative to pricier ATR-IR fiber probes
  • Replaceable ATR Loop PIR-Fiber Tips
Fiber Optic ATR Loop Probe
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The ATR-Loop Infrared PIR-fiber probe, by MIR Photonics LLC, is tailored for compatibility with FTIR and other Mid IR spectrometers, offering remote analysis capabilities for the composition of liquids, pastes, and soft surfaces without the need for sample preparation. This loop fiber probe provides a cost-effective solution for ATR-spectroscopy and allows customization of sensitivity through various loop configurations, including single, double, or triple turns.

Common Parameters of Fiber Optic Multi-Loop Probes
Total Length1m (opt.: PIR up to 5m, CIR up to 10m) *
Shaft Length120mm *
Shaft Diameter10mm
Shaft MaterialPEEK
Protective Tube MaterialPEEK
Input / Output ConnectorsLong SMA-905 (opt.: any other type)
Detachable PIR fiber LoopLoop; Multi-Loop (Double-, Triple-Loop)
*Customized dimensions are available on request
Specification of Fiber Optic ATR-Loop Probes
Probe typeChalcogenide-IR (CIR)Polycrystalline-IR (PIR)
Transmission range6500 – 1550 cm-1 (1.5-6.0μm)2500 – 600 cm -1 (4-17μm)
Fiber typeChalcogenide glass (As-S)Silver Halide (AgCl:AgBr)
Temperature range≤ 90°C≤ 100°C

Conduct remote in-situ evanescent absorption (ATR-) spectroscopy

Perform multiple ATR-spectroscopy measurements through fiber loop immersion in liquid

Enable in-vivo molecular spectroscopy for medical diagnostics with a straightforward ATR-Loop touch on skin or tissue