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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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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...
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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...

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Related Experiment Video

Updated: Jun 8, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
07:22

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Electro-optic high-resolution Fabry-Perot spectrometer.

G Hernandez, K C Clark

    Applied Optics
    |October 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel single-crystal lithium niobate etalon offers high spectral resolution for scientific studies. Its linear voltage response and high luminosity make it ideal for rugged, long-term field applications.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • High-spectral-resolution instruments are crucial for scientific analysis.
    • Existing etalon technologies may have limitations in linearity, size, or ruggedness.

    Purpose of the Study:

    • To demonstrate the successful operation of a single-crystal lithium niobate etalon.
    • To evaluate its suitability for high-spectral-resolution studies and field applications.

    Main Methods:

    • Fabrication and testing of a single-crystal lithium niobate etalon with a 5-cm clear diameter.
    • Measurement of spectral response and voltage linearity.

    Main Results:

    • Successful operation of the lithium niobate etalon achieved.
    • Demonstrated highly linear response in wave number as a function of voltage.
    • Observed high luminosity due to the substrate's refractive index, leading to a compact design.

    Conclusions:

    • The lithium niobate etalon provides adjustment-free, linear operation.
    • Its ruggedness, high luminosity, and compact size are ideal for unattended, long-term field operation in scientific research.