Related Concept Videos
01:25IR 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...
01:26Inductively 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).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
01:14UV–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...
01:09Infrared (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...
Different compounds display unique properties due to their...
01:11Applications 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,...
01:22Atomic 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: May 29, 2026
13:31
High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
Published on: December 22, 2015
[Advance in imaging spectropolarimeter].
Xin-quan Wang1, Bin Xiangli, Min Huang
1Laboratory of Spectral Imaging Technique, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China. wangxinquan@opt.ac.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|September 28, 2011
Summary
Imaging spectropolarimeters (ISP) combine imaging, spectrometry, and polarimetry. This review covers their principles, recent advances, and future trends for novel photoelectric sensors.
More Related Videos
Area of Science:
- Optics and Photonics
- Sensor Technology
- Spectroscopy
Context:
- The integration of imaging, spectrometry, and polarimetry presents a novel approach in photoelectric sensing.
- Recent advancements in acousto-optic tunable filters (AOTF) and liquid crystal tunable filters (LCTF) are key to developing sophisticated ISPs.
- Existing imaging spectrometers are being enhanced with polarized components to achieve spectropolarimetric capabilities.
Purpose:
- To introduce the concept and fundamental principles of Imaging Spectropolarimeters (ISP).
- To review the latest domestic and international advancements in ISP technology.
- To illustrate the operational principles of ISPs utilizing novel filter technologies and modified spectrometer designs.
Summary:
- This paper details the concept of Imaging Spectropolarimeters (ISP), which merge imaging, spectrometry, and polarimetry functions.
- It reviews recent global progress in ISP technology, explaining principles based on acousto-optic tunable filters (AOTF) and liquid crystal tunable filters (LCTF).
- The review also covers ISPs developed by integrating polarized components into dispersing-type, spatially modulated Fourier transform, and computer tomography imaging spectrometers, and discusses future trends.
Impact:
- Provides a comprehensive overview of ISP technology for researchers and developers.
- Highlights key enabling technologies like AOTF and LCTF for advanced optical sensing.
- Informs future research directions and potential applications of integrated spectropolarimetric imaging systems.