Optical design of echelle spectrometer with ultra-wide wavelength range and high resolution

2021 ◽  
Vol 29 (1) ◽  
pp. 45-53
Author(s):  
Ci SUN ◽  
◽  
Jin YANG ◽  
Ji-wei ZHU ◽  
Ting-ting MA ◽  
...  
Keyword(s):  
High Resolution ◽  
Wavelength Range ◽  
Optical Design ◽  
Wide Wavelength Range ◽  
Echelle Spectrometer

scholarly journals Precision versus Accuracy: some astrophysical and operational limitations

1999 ◽  
Vol 170 ◽  
pp. 52-57
Author(s):  
R. E. M. Griffin
Keyword(s):  
High Resolution ◽  
Wavelength Range ◽  
Spectral Type ◽  
Cross Correlation ◽  
Systematic Errors ◽  
Radial Velocities ◽  
High Dispersion ◽  
Low Level ◽  
Separate Category ◽  
Wide Wavelength Range

AbstractThe measurement of accurate radial velocities for A- or B-type dwarfs poses a separate category of problems: the small number of suitable lines, the wide wavelength range over which such lines are distributed, thermal broadening, rotational broadening, line distortions caused by rotating spots, spectrum variations due to obvious duplicity, and low-level velocity variations due to undetected companion spectra. Moreover, the fact that A- and B-type spectra fall into very distinct groups, each with its own sub-set of the above problems, means that it may be both difficult and unsatisfactory to specify velocity standards, since intrinsic uncertainties caused by differences in spectral type may exceed the measuring errors. The investigation summarized here into the nature and magnitude of some of these intrinsic errors employs wide spans of high-resolution, high-dispersion spectra of Sirius and Vega as ‘natural’ templates. Attention is also drawn to systematic errors which may arise (a) when modelling a cross-correlation ‘dip’ and (b) whenever a spectrum or a cross-correlation dip is measured in the unavoidable presence of another such spectrum or dip.

Optical Design of High Resolution Two Dimension Echelle Spectrometer

2015 ◽  
Vol 35 (4) ◽  
pp. 0422005
Author(s):  
张瑜峰 Zhang Yufeng ◽  
武建芬 Wu Jianfen ◽  
朱青松 Zhu Qingsong ◽  
杜辉 Du Hui ◽  
王宇 Wang Yu ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Design ◽  
Two Dimension ◽  
Echelle Spectrometer

FBG Sensing Demodulation Technology Based on Acousto-Optic Tunable Filter

2014 ◽  
Vol 513-517 ◽  
pp. 4257-4260 ◽  
Author(s):  
Xiao Juan Li ◽  
Ze Gui Chen ◽  
Zhi Yong Xie ◽  
Xiao Bin Liang ◽  
Xian Long Zhao
Keyword(s):  
High Resolution ◽  
Wavelength Range ◽  
Simple Structure ◽  
Low Cost ◽  
Tunable Filter ◽  
Wide Wavelength Range ◽  
Fbg Sensors

This paper describes FBG sensing demodulation technology which based on acousto-optic tunable filter, this technique solves the traditional FBG demodulation technique existing some problems such as slow demodulation speed and small number of driving FBG sensors. The demodulation technique has advantages with simple structure, low cost, wide wavelength range, high resolution and fast demodulation speed.

scholarly journals High-Performance Ultra-Thin Spectrometer Optical Design Based on Coddington’s Equations

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 323
Author(s):  
Zhiwei Feng ◽  
Guo Xia ◽  
Rongsheng Lu ◽  
Xiaobo Cai ◽  
Hao Cui ◽  
...  
Keyword(s):  
High Resolution ◽  
Spectral Resolution ◽  
High Performance ◽  
Optical Design ◽  
Pixel Size ◽  
Simulation Design ◽  
Central Wavelength ◽  
Spot Radius ◽  
Unique Method ◽  
Almost All

A unique method to design a high-throughput and high-resolution ultrathin Czerny–Turner (UTCT) spectrometer is proposed. This paper reveals an infrequent design process of spectrometers based on Coddington’s equations, which will lead us to develop a high-performance spectrometer from scratch. The spectrometer is composed of cylindrical elements except a planar grating. In the simulation design, spot radius is sub-pixel size, which means that almost all of the energy is collected by the detector. The spectral resolution is 0.4 nm at central wavelength and 0.75 nm at edge wavelength when the width of slit is chosen to be 25 μm and the groove density is 900 lines/mm.

scholarly journals Densely folded spectral images of the CCD spectrometer working in the full 200-1000nm wavelength range with high resolution

2005 ◽  
Vol 13 (25) ◽  
pp. 10049 ◽  
Author(s):  
Yue-Rui Chen ◽  
Bin Sun ◽  
Tao Han ◽  
Yu-Fei Kong ◽  
Cong-Hui Xu ◽  
...  
Keyword(s):  
High Resolution ◽  
Wavelength Range

Quarter-wave plate tunable in a wide wavelength range

1995 ◽  
Vol 25 (2) ◽  
pp. 187-190 ◽  
Author(s):  
I V Gol'tser ◽  
M Ya Darsht ◽  
Boris Ya Zel'dovich ◽  
N D Kundikova ◽  
L F Rogacheva
Keyword(s):  
Wavelength Range ◽  
Quarter Wave Plate ◽  
Wave Plate ◽  
Wide Wavelength Range ◽  
Quarter Wave

Wide-wavelength range AlGaInAs laser array achieved by selective area growth on heterogenerous InP-on-Si wafer

2021 ◽  
Author(s):  
Claire Besancon ◽  
Delphine Néel ◽  
Giancarlo Cerulo ◽  
Dalila Make ◽  
Nicolas I. Vaissiere ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Selective Area Growth ◽  
Laser Array ◽  
Selective Area ◽  
Wide Wavelength Range ◽  
Area Growth ◽  
Si Wafer
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