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Related Concept Videos

IR Spectrometers01:25

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: Overview01:26

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...

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Related Experiment Video

Updated: May 18, 2026

Diffuse Reflectance Spectroscopy: Getting the Capillary Refill Test Under One's Thumb
06:50

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Published on: December 2, 2017

Compact real-time birefringent imaging spectrometer.

Michael W Kudenov1, Eustace L Dereniak

  • 1College of Optical Science, The University of Arizona, 1630 E. University Blvd., Tucson, Arizona 85721, USA. mkudenov@optics.arizona.edu

Optics Express
|October 6, 2012
PubMed
Summary
This summary is machine-generated.

A new snapshot hyperspectral imaging Fourier transform (SHIFT) spectrometer uses birefringent interferometry for a compact, vibration-insensitive design. This advanced sensor rapidly reconstructs spectral data, proving effective in diverse lighting conditions.

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A Multimodal Wide-Field Fourier-Transform Raman Microscope
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Last Updated: May 18, 2026

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Published on: December 2, 2017

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Area of Science:

  • Optics and Photonics
  • Spectroscopy
  • Imaging Technology

Background:

  • Traditional Fourier transform spectrometers often face limitations in size, vibration sensitivity, and reconstruction speed.
  • Existing hyperspectral imaging techniques can be complex and computationally intensive.

Purpose of the Study:

  • To design and experimentally demonstrate a novel snapshot hyperspectral imaging Fourier transform (SHIFT) spectrometer.
  • To highlight the advantages of a multiple-image FTS (MFTS) approach combined with birefringent interferometry.
  • To validate the performance of the SHIFT spectrometer in various environmental conditions.

Main Methods:

  • Development of a compact, common-path interferometer utilizing birefringent interferometry.
  • Implementation of a multiple-image FTS (MFTS) architecture for snapshot data acquisition.
  • Leveraging graphics processing units (GPUs) for rapid spectral data reconstruction.
  • Experimental validation using gas-discharge lamps and outdoor measurements.

Main Results:

  • Successful design and experimental demonstration of the SHIFT spectrometer.
  • Achieved an ultra-compact sensor size of 15x15x10 mm(3).
  • Demonstrated vibration insensitivity due to the common-path, birefringent interferometer design.
  • Validated rapid reconstruction rates and accurate spectral signature resolution in outdoor lighting.

Conclusions:

  • The SHIFT spectrometer offers significant advantages in compactness, vibration resistance, and speed compared to traditional Michelson interferometer-based systems.
  • The developed sensor is capable of resolving spectral signatures under realistic outdoor lighting and environmental conditions.
  • This technology holds promise for advanced hyperspectral imaging applications requiring portable and rapid spectral analysis.