Related Experiment Video
Updated: Feb 7, 2026

09:57
Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
Published on: July 25, 2022
4.6K
[Research on Broadband Spectral Imaging Spectrometer Based on CDP]
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|July 24, 2018
Summary
We developed a static, snapshot imaging spectrometer using a crossed dispersion prism (CDP) for real-time spectral imaging of moving targets. This innovative technology enhances detection, location, and identification of energetic events.
Area of Science:
- Optics and Photonics
- Spectroscopy
- Instrument Design
Background:
- Real-time spectral imaging is crucial for dynamic target analysis.
- Existing technologies face limitations in capturing spectral data from moving objects instantaneously.
- Advanced spectroscopic instruments are needed to overcome these challenges.
Purpose of the Study:
- To design and develop a static, snapshot imaging spectrometer for real-time spectral analysis of moving targets.
- To investigate the principles of spectral imaging using a crossed dispersion prism (CDP).
- To create a broadband spectral imaging system with high spectral resolution.
Main Methods:
- Designed a static, snapshot imaging spectrometer utilizing a CDP.
- Studied the fundamental principles of spectral imaging.
- Configured an optical system comprising a CDP, imaging lens, and detector.
- Achieved a spectral coverage of 0.6 to 5.0 μm with a ±2° field of view.
Main Results:
- The developed instrument demonstrates effective spectral detection capabilities across the 0.6 to 5.0 μm range.
- An average spectral resolution of 20 nm was achieved.
- The system enables real-time spectral imaging of dynamic targets.
Conclusions:
- The static, snapshot imaging spectrometer based on a CDP offers a novel technical solution for real-time spectral imaging.
- This technology holds significant potential for the real-time detection, location, and identification of unknown energetic events.
- The instrument provides a valuable tool for advanced spectroscopic analysis in dynamic scenarios.
Related Concept Videos
IR Spectrometers
2.7K
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...
2.7K
Mass Spectrometers
9.0K
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
9.0K
NMR Spectrometers: Overview
2.2K
NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
2.2K
UV–Vis Spectrometers
3.7K
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.
3.7K
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
1.8K
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
1.8K
NMR Spectrometers: Resolution and Error Correction
1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K

