Related Experiment Video
Updated: May 6, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
Published on: December 30, 2025
A wide spectral range reflectance and luminescence imaging system
Tapani Hirvonen1, Niko Penttinen, Markku Hauta-Kasari
1Institute of Photonics, University of Eastern Finland, P.O.Box 111, FI-80101 Joensuu, Finland. tapani.r.hirvonen@uef.fi.
We developed a versatile wide spectral range imaging system for advanced material analysis. This customizable system offers flexible resolutions and measurement geometries for diverse applications.
Area of Science:
- Optics and Photonics
- Materials Science
- Spectroscopy
Background:
- Advanced imaging techniques are crucial for detailed material characterization.
- Existing spectral imaging systems often have limitations in spectral range or spatial resolution.
Purpose of the Study:
- To introduce a novel wide spectral range imaging system.
- To demonstrate its flexibility in spatial resolution and measurement geometries.
- To evaluate its performance for reflectance and luminescence measurements.
Main Methods:
- Development of a customizable imaging system covering 200-2500 nm spectral range.
- Integration of variable spatial resolution capabilities (minimum 250 μm).
- Testing and validation using reflectance and luminescence measurements.
Main Results:
- The system successfully acquired spectral images across a wide spectral range.
- Performance evaluation confirmed its capabilities and flexibility.
- Demonstrated potential for customization for transmittance measurements.
Conclusions:
- The developed wide spectral range imaging system is highly adaptable.
- It offers significant potential for various practical applications in material science and beyond.
Related Concept Videos
Super-resolution Fluorescence Microscopy
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
Total Internal Reflection Fluorescence Microscopy

