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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
5 December 2025
Meet Us at the 20. Herbstkolloquium Prozessanalytik

The art photonics team is currently fully engaged at the 20. Herbstkolloquium Prozessanalytik, and with two days already behind us, we are thrilled with the productive atmosphere and the depth of the technical exchanges. The event kicked off with strong momentum, setting the stage for deep discussions on the future of process control. We were […]

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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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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 Couplers for LN Cooled MCT Detector

Main features:

  • Efficient coupling of fiber cable to MCT/ InSb detector  in side window Dewar  
  • Wide-range operation thanks to Mirror optics
  • Price effective Lens optic version 
  • Pre-aligned and adjustable  for maximum coupling efficiency
  • SMA or FC/PC  adaptor for fiber (Chalcogenide and Polycrystalline)  optical cable

Description

Refocusing couplers are designed  for  easy coupling of  mid-IR fiber optical cables to MCT/ InSb detector  in LN-cooled side window Dewar.   Art photonics  presents two versions:  Lens Refocusing- and Mirror Refocusing coupler.

The simplest Lens  version coupler can be  standard or customized. Adjustable in 3 dimensions - X-Y for the lens and Z - for the connector position.

Advanced version of the coupler is based on pre-aligned parabolic mirrors. This version serves to eliminate chromatic aberrations and has purging option to avoid atmospheric disturbance in spectral details of the object.  Adjustable in 3 dimensions - X-Y for the mirror and Z - translation of the Dewar.

Both couplers have SMA or FC/PC (on request) adaptor for  fiber optical cable.

See product pages of  our Chalcogenide and Polycrystalline Fiber cables for different spectral range detectors and radiation sources.

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

Specs

Specification of Dewar Couplers
Coupler Type Lens coupler Mirror coupler
Optic elements ZnSe lens with 3-5 or 8-12μm AR-coating Two parabolic mirrors
Dimensions Diameter 70 mm Length 61 mm 157*148*101mm, space for Dewar and pre-amplifier included
Alignment options Angular translation stage ±2.5° in both orthogonal axes; Z-alignment ± 5mm X-Y alignment of the mirror inside the coupler, Z-alignment - translation of the Dewar.
Other options Purging is possible

Downloads

Graphs

Applications

  • Mid IR spectroscopy
  • Flexible IR pyrometry
  • Flexible IR-Imaging systems

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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