FlexiSpec®

Spectroscopy Fiber Probes & Probe Couplers

FlexiRay®

Fibers | Cables | Bundles | Accessories

FlexiService

Loan & Installation | Measurements Training | Repair | Development
News
Latest News
5 February 2026
Application Note: Measuring Ethanol and Methanol Mixtures with ATR Fiber Probes

In the high-stakes environment of complex chemical processing, the ability to distinguish and quantify components like ethanol and methanol in real-time is often the deciding factor between a strictly controlled reaction and an off-spec batch. Traditionally, operators have relied on manual extraction for laboratory analysis. However, this method introduces significant delays and safety risks that […]

Read more
30 January 2026
How to Measure ATR Spectra Directly in Solution with Fiber Optic Probes

Moving Beyond the Bench: In-Line FTIR Monitoring with ATR Probes For decades, Attenuated Total Reflection (ATR) has been a standard technique for FTIR spectroscopy. However, most users are restricted to standard ATR inserts or benchtop accessories. While effective for static lab samples, these setups introduce a critical bottleneck: the sample must be extracted from the […]

Read more
Latest Events
20 February 2026
EPIC Online Technology Meeting on Specialty Optical Fibers for Lasers | 23 February 2026 | Online

We are excited to announce that art photonics GmbH is taking the virtual stage on February 23, 2026, at the EPIC (European Photonics Industry Consortium) Online Technology Meeting on Specialty Optical Fibers for Lasers. Specialty optical fibers are the backbone of modern, high-performance laser systems. Whether driving industrial manufacturing, advanced sensing, or medical technology, the […]

Read more
18 February 2026
PAT Connect 2026 | 10-11 March 2026 | Badenweiler, Germany

art photonics GmbH is pleased to announce our participation as an exhibitor at PAT Connect 2026, taking place this March at the TTC Technology Training Center. As industries increasingly shift toward real-time monitoring and automation, Process Analytical Technology (PAT) is more critical than ever. Taking the Spectrometer to the Sample Whether you are scaling up […]

Read more
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:

You are currently viewing a placeholder content from YouTube. To access the actual content, click the button below. Please note that doing so will share data with third-party providers.

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.

We use the Mailchimp service (Intuit Inc., USA) to distribute our newsletter. Your data is used exclusively for the purpose of sending the newsletter and will be processed based on your consent (Art. 6 para. 1 lit. a GDPR). Mailchimp may also process data in the United States. Please note that the USA is considered a third country without an adequate level of data protection. For more information, please refer to Mailchimp’s Privacy Policy: https://mailchimp.com/legal/privacy/ .
crossarrow-right
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram
Copy link
Powered by Social Snap