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IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

Raman Spectroscopy Instrumentation: Overview

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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...

UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

Infrared (IR) Spectroscopy: Overview

Infrared (IR) Spectroscopy: Overview

When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...

Applications of IR Spectroscopy: Overview

Applications of IR Spectroscopy: Overview

The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...

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Updated: Jun 6, 2026

High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology

High-definition Fourier Transform Infrared (FT-IR) Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology

Published on: January 21, 2015

[A new imaging FTIR spectroradiometer].

Jing-guo Zong¹, Jian-qi Zhang, De-lian Liu

¹School of Technology Physics, Xidian University, Xi'an 710071, China. zongjg@126.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|December 9, 2010

Summary

This summary is machine-generated.

A novel imaging Fourier-transform infrared (FTIR) spectroradiometer system was developed for spectral data acquisition. This system provides high-resolution imaging and spectral data, proving adequate for non-realtime applications.

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A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

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A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Area of Science:

Optics and Spectroscopy
Instrument Development

Context:

Limitations of single-element detectors and non-imaging spectroradiometers for spectral data acquisition.
Need for advanced systems capable of both spatial and spectral information capture.

Purpose:

To develop a new imaging Fourier-transform infrared (FTIR) spectroradiometer system.
To enable spectral data acquisition with enhanced spatial and spectral resolution.

Summary:

A novel imaging FTIR spectroradiometer system was designed, integrating a spectroradiometer, synchronous controller, and scanning device.
The system features 500 x 500 pixels resolution, a 667-5000 cm(-1) spectral range, 1 cm(-1) spectral resolution, and a 150-degree space field of view.
Spectral radiometric calibration is achievable via the spectroradiometer's data interface.

Impact:

The developed system is suitable for non-realtime imaging spectral data acquisition.
Demonstrates a viable approach for combined spatial and spectral analysis in various scientific fields.
Provides a foundation for future advancements in hyperspectral imaging technology.