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News
Latest News
13 November 2025
Technical Note: Choosing the Right Optical Fiber for Your Process Spectrometer

Is your process spectrometer giving you the full picture? For engineers working in process control and Process Analytical Technology (PAT), the quality and reliability of real-time data are paramount. While the spectrometer itself is the core of the system, its performance often hinges on a component that can be easily overlooked: the optical fiber. The […]

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24 October 2025
Webinar Recording Now Available: A Practical Guide to Selecting the Right Fiber Optic Probe

We extend our sincere thanks to all who attended our recent webinar, "Selecting the Right Fiber Optic Probe for your Application." The event was met with a great response, and the insightful questions from our live attendees underscored that choosing the best tool for spectroscopic analysis remains a key challenge for many scientists and engineers. […]

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Latest Events
25 November 2025
Webinar: Combi Probes - Solving the "Blind Spot" of Single-Mode Spectroscopy

In complex chemical analysis and biomedical diagnostics, relying on a single spectroscopic technique often results in a "blind spot." While Near-Infrared (NIR) offers speed, it frequently lacks specificity. Raman spectroscopy provides a precise molecular fingerprint but often battles fluorescence interference. Mid-IR offers excellent structural detail but is limited by shallow penetration depths. The Challenge: Spatial […]

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18 November 2025
SPIE Photonics West 2026 | 17-22 January 2026 | San Francisco, CA, USA

art photonics GmbH is pleased to announce that we will be exhibiting at SPIE Photonics West 2026 in San Francisco. We invite you to join us at the world’s premier event for the optics and photonics industry, held at the Moscone Center from January 17-22, 2026. As a global leader in specialty fiber optic solutions, […]

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About Our Company
art photonics GmbH, founded in Berlin in September 1998, is one of the worldwide leaders in development and production of specialty fiber products for a broad spectrum from 300 nm to 16 µm. Unique technologies of Polycrystalline Mid InfraRed (PIR-) fibers and Metal coated Silica fibers are used for assembly of various spectroscopy probes for medical diagnostics and industrial process control, in volume production of fiber for medical and industrial lasers, for different fiber bundles, etc. Since January 2024 art photonics GmbH is a member of NYNOMIC GROUP.
Member Of:
UV 200-400 nm
Visible
Near IR 750-2500 nm
Mid IR 2.5 - 18 µm

Fiber Optic ATR Loop Probe

Main features

  • High throughput at Mid InfraRed range
  • On-line absorbance spectroscopy of liquids, pastes & soft solid surfaces
  • Compatible with all FTIR, QCL and IR- Filter spectrometers
  • Cost effective alternative to more expensive ATR-IR-fiber probes
  • Replaceable ATR Loop PIR-Fiber Tips
Excel LogoArtphotonics_Sale from stock Probes June 2025

Description

The ATR-Loop Infrared PIR-fiber probe was the first in FlexiSpec® product line designed for use with FTIR and other Mid IR spectrometers. ATR-Loop PIR-fiber probes are well-suited for remote analysis of composition of liquids, pastes and soft surfaces and do not require sample preparation. The Loop fiber probe is the simplest one in the FlexiSpec® product family to allow for low cost ATR-spectroscopy. Loops with different number of turns (single, double or triple) serve to fit the desired sensitivity.

For a detailed instruction of how to use the Loop Probe, please see:

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More Information

For more information please visit our “Downloads” section and find relative articles at our “Publications” page.

Specs

Common Parameters of Fiber Optic Multi-Loop Probes FlexiSpec®
Total Length 1m (opt.: PIR up to 5m, CIR up to 10m) *
Shaft Length 120mm *
Shaft Diameter 10,6mm
Shaft Material PEEK
Protective Tube Material PEEK
Input / Output Connectors Long SMA-905 (opt.: any other type)
Detachable PIR fiber Loop Loop; Multi-Loop (Double-, Triple-Loop)
*Customized dimensions are available on request
Specification of Fiber Optic ATR-Loop Probes FlexiSpec®
Probe type Chalcogenide-IR (CIR) Polycrystalline-IR (PIR)
Transmission range 6500 – 1550 cm-1 (1.5-6.0μm) 2500 – 600 cm -1 (4-17μm)
Fiber type Chalcogenide glass (As-S) Silver Halide (AgCl:AgBr)
Temperature range ≤ 90°C ≤ 100°C

Graphs

Downloads

 

Applications

  • Remote evanescent absorption (ATR-) spectroscopy in-citu
  • Multiple ATR-spectroscopy by immersion of fiber loop in liquid
  • In-vivo molecular spectroscopy for medical diagnostics by simple touch of ATR-Loop on skin or tissue

Inquiry

Do you have any questions about this or any other product? Send us an inquiry, and our personnel will answer your question as soon as possible.

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