Journal ArticleDOI
High-accuracy spectral reduction algorithm for the échelle spectrometer.
TLDR
A spectral reduction algorithm for an échelle spectrometer with spherical mirrors that builds a one-to-one correspondence between the wavelength and pixel position is proposed, which ensures that the wavelengths calculated from spectrograms have a high spectral resolution.Abstract:
A spectral reduction algorithm for an echelle spectrometer with spherical mirrors that builds a one-to-one correspondence between the wavelength and pixel position is proposed. The algorithm accuracy is improved by calculating the offset distance of the principal ray from the center of the image plane in the two-dimensional vertical direction and compensating the spectral line bending from the reflecting prism. The simulation and experimental results verify that the maximum deviation of the entire image plane is less than one pixel. This algorithm ensures that the wavelengths calculated from spectrograms have a high spectral resolution, meaning the precision from the spectral analysis reaches engineering standards of practice.read more
Citations
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Journal ArticleDOI
Groove shape characteristics of echelle gratings with high diffraction efficiency
TL;DR: In this article, an echelle grating is defined as a grating that contains a series of reflective facets with a specific tilt angle that are located far from the nonworking facet of the grating and have a deep groove depth.
Journal ArticleDOI
Astigmatism-corrected echelle spectrometer using an off-the-shelf cylindrical lens.
TL;DR: This work proposes an optical design of astigmatism-corrected echelle spectrometer using an off-the-shelf cylindrical lens, which is capable of overall compensation of theAstigmatism in a wide spectral range (200-600 nm).
Journal ArticleDOI
Establishment and correction of an Echelle cross-prism spectrogram reduction model
TL;DR: In this article, the spectral model of an echelle cross-prism spectrometer was calibrated using least squares principle and element lamps with known characteristic wavelength to obtain the actual values of the system parameters.
Journal ArticleDOI
Simple spectral reduction algorithm used for the echelle spectrometer.
TL;DR: A simple spectral reduction algorithm involving calibration and compensation is proposed, which combines the least-square method and the polynomial fitting method, and the result showed that the absolute error of each wavelength was less than 0.02 nm.
Journal ArticleDOI
New spectral reduction algorithm for echelle spectrometer in laser-induced breakdown spectroscopy.
Meng Shen,Zhongqi Hao,Xiangyou Li,Changmao Li,Lianbo Guo,Yun Tang,Ping Yang,Xiaoyan Zeng,Yongfeng Lu +8 more
TL;DR: The key concept in this algorithm is to model the spectrogram rather the spectrometer, which makes the algorithm more adaptive to different designs, and introduces a dynamic adjusting procedure for generating optimized spectra from laser-induced plasmas.
References
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Journal ArticleDOI
New algorithms for reducing cross-dispersed echelle spectra
Nikolai Piskunov,Jeff A. Valenti +1 more
TL;DR: REDUCE as mentioned in this paper is a data analysis package for cross-dispersed echelle spectra that can be adapted to handle a variety of instrument types, including spec-trographs with prism or grating crossdispersers, possibly fed by a ber or image slicer.
Journal ArticleDOI
Broadband astigmatism-corrected Czerny–Turner spectrometer
TL;DR: An off-the-shelf cylindrical lens is used to remove astigmatism over the full bandwidth and results show that better than 0.1 nm spectral resolution and more than 50% throughput were achieved over a bandwidth of 400 nm centered at 800 nm.
Journal ArticleDOI
The Production of Diffraction GratingsI. Development of the Ruling Art
TL;DR: In this article, the development and present status of mechanically controlled ruling engines are discussed, and problems involved in producing on a reflecting surface large numbers of parallel equidistant grooves of constant or controlled form, with position tolerances of one micro-inch or better, are analyzed.
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Echelle-spectrograph as a tool for studies of structured background in flame atomic absorption spectrometry
TL;DR: In this paper, an echelle-spectrograph with solid-state image detector and active wavelength stabilization was developed for investigations of structured background in flame atomic absorption spectrometry (flame-AAS).
Journal ArticleDOI
A new, versatile echelle spectrometer relevant to laser induced plasma applications
TL;DR: In this article, an echelle charge coupled device (CCD) system for simultaneous detection from 220 to 400 nm with a resolution λ/Δλ = 15,000 (4 pixels) has been developed.