Astigmatism-corrected Czerny–Turner imaging spectrometer for broadband spectral simultaneity

Qingsheng Xue

doi:10.1364/AO.50.001338

Astigmatism-corrected Czerny–Turner imaging spectrometer for broadband spectral simultaneity

Qingsheng Xue

Applied Optics
Vol. 50,
Issue 10,
pp. 1338-1344
(2011)
•https://doi.org/10.1364/AO.50.001338

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Qingsheng Xue, "Astigmatism-corrected Czerny–Turner imaging spectrometer for broadband spectral simultaneity," Appl. Opt. 50, 1338-1344 (2011)

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Abstract

A low-cost, broadband, astigmatism-corrected Czerny–Turner arrangement with a fixed plane grating is proposed. A wedge cylindrical lens is used to correct astigmatism over a broadband spectral range. The principle and method of astigmatism correction are described in detail. We compare the performance of this modified Czerny–Turner arrangement with that of the traditional Czerny–Turner arrangement by using a practical Czerny–Turner imaging spectrometer example.

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Parameter	Value
Central wavelength (nm)	500
$r_{1}$ (mm)	402.5
$r_{2}$ (mm)	427.06
$α_{1} / 2$ (°)	8
$α_{2} / 2$ (°)	9.133
d ( $μm$ )	3.33
i (°)	5
θ (°)	13.719
n	1.462
t	5
β (°)	7.86
$l_{w s}$ (mm)	26.54

Parameter	Calculated	Ray-Tracing Optimized
$L_{g f}$ (mm)	421.65	307.64
$f_{w s}^{'}$ (mm)	25.5	24.14
γ (°)	4.5	5.089

Parameter	Value
Central wavelength (nm)	500
$r_{1}$ (mm)	402.5
$r_{2}$ (mm)	427.06
$α_{1} / 2$ (°)	8
$α_{2} / 2$ (°)	9.133
d ( $μm$ )	3.33
i (°)	5
θ (°)	13.719
n	1.462
t	5
β (°)	7.86
$l_{w s}$ (mm)	26.54

Parameter	Calculated	Ray-Tracing Optimized
$L_{g f}$ (mm)	421.65	307.64
$f_{w s}^{'}$ (mm)	25.5	24.14
γ (°)	4.5	5.089

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Cited By

Figures (8)

Tables (2)

Equations (18)

Metrics

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