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Related Concept Videos

UV–Vis Spectrometers01:14

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...
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...
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
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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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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.

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Related Experiment Video

Updated: Jun 20, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Grating-fiber coupler as a high-resolution spectrometer.

P S Russell, R Ulrich

    Optics Letters
    |September 3, 2009
    PubMed
    Summary
    This summary is machine-generated.

    A novel fiber-optic spectrometer using a photoresist grating achieves 1 nm resolution. Future designs aim to significantly enhance this performance for advanced spectral analysis.

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    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Fiber Optic Technology

    Background:

    • Traditional spectrometers can be bulky and complex.
    • Integrating spectroscopic capabilities into fiber optics offers miniaturization and remote sensing advantages.

    Purpose of the Study:

    • To develop and analyze an in-line, single-mode fiber-optic spectrometer.
    • To demonstrate its fabrication and performance characteristics.
    • To propose methods for improving its resolution.

    Main Methods:

    • Fabrication of a photoresist grating.
    • Integration of the grating into the evanescent field of a side-polished single-mode fiber.
    • Analysis of the spectrometer's performance, including resolution.

    Main Results:

    • Successful fabrication of the fiber-optic spectrometer.
    • Achieved nearly diffraction-limited performance with a resolution of approximately 1 nanometer (nm).

    Conclusions:

    • The developed fiber-optic spectrometer is a viable device for spectral analysis.
    • Proposed methods offer potential for orders-of-magnitude resolution improvement.
    • This technology paves the way for compact and high-resolution fiber-based spectroscopic instruments.