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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...
Continuous -time Fourier Transform01:11

Continuous -time Fourier Transform

The Fourier series is instrumental in representing periodic functions, offering a powerful method to decompose such functions into a sum of sinusoids. This technique, however, necessitates modification when applied to nonperiodic functions. Consider a pulse-train waveform consisting of a series of rectangular pulses. When these pulses have a finite period, they can be accurately represented by a Fourier series. Yet, as the period approaches infinity, resulting in a single, isolated pulse, the...
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Related Experiment Video

Updated: Jun 6, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
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Published on: December 30, 2025

Monolithic Fourier-transform imaging spectrometer.

J B Rafert, R G Sellar, J H Blatt

    Applied Optics
    |November 10, 2010
    PubMed
    Summary

    This study discusses a monolithic imaging Fourier-transform spectrometer. The spectrometer design utilizes a Sagnac interferometer for advanced spectral imaging capabilities.

    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Interferometry

    Background:

    • Fourier-transform spectroscopy (FTS) is a powerful technique for spectral analysis.
    • Traditional FTS systems can be bulky and complex.
    • Miniaturization of spectroscopic instruments is a growing area of research.

    Purpose of the Study:

    • To present the design of a novel monolithic imaging Fourier-transform spectrometer.
    • To explore the application of a Sagnac interferometer in an integrated spectroscopic device.
    • To enable compact and efficient spectral imaging.

    Main Methods:

    • The core of the design is a monolithic Sagnac interferometer.
    • Integration of optical components onto a single substrate.
    • Utilizing the principles of Fourier-transform spectroscopy for data acquisition.

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    Main Results:

    • A conceptual design for a monolithic imaging spectrometer is presented.
    • The Sagnac interferometer configuration is shown to be suitable for miniaturization.
    • The design facilitates simultaneous spatial and spectral information capture.

    Conclusions:

    • The proposed monolithic Sagnac interferometer-based spectrometer offers a pathway to compact spectral imaging systems.
    • This design has potential applications in various fields requiring portable spectroscopic analysis.
    • Further development could lead to practical, miniaturized spectroscopic instruments.