Imaging channeled spectrograph: a high resolution spectrometer providing multiple simultaneous 2-D monochromatic images over a large spectral range

Clarence M. Korendyke

doi:10.1364/AO.27.004187

Applied Optics
Vol. 27,
Issue 20,
pp. 4187-4192
(1988)
•https://doi.org/10.1364/AO.27.004187

Imaging channeled spectrograph: a high resolution spectrometer providing multiple simultaneous 2-D monochromatic images over a large spectral range

Clarence M. Korendyke

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Clarence M. Korendyke, "Imaging channeled spectrograph: a high resolution spectrometer providing multiple simultaneous 2-D monochromatic images over a large spectral range," Appl. Opt. 27, 4187-4192 (1988)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Abstract

An imaging channeled spectrograph (ICS) consists of a Fabry-Perot bandpass filter followed by a wide slit imaging grating spectrograph. This unique configuration combines the 2-D monochromatic imaging of a Fabry-Perot system with the high resolution and comprehensive wavelength coverage of a grating spectrograph. The ICS produces a series of simultaneous, high resolution, nonoverlapping, 2-D monochromatic images uniformly distributed over a large spectral range. This paper describes the ICS optical properties in general and calculates the optical performance of an ICS designed for the proposed NRL spectrocoronagraph.

Full Article | PDF Article

More Like This

Étalon–spectrograph system for improved resolution over a wide spectral range

D. T. Speer, S. Von Laven, A. H. Karp, and M. Stockton
Appl. Opt. 19(16) 2757-2761 (1980)

Czerny-Turner spectrograph with a wide spectral range

Mirta A. Gil, Juan M. Simon, and Angela N. Fantino
Appl. Opt. 27(19) 4069-4072 (1988)

Imaging spectrometer for high resolution measurements of stratospheric trace constituents in the ultraviolet

Marsha R. Torr and D. G. Torr
Appl. Opt. 27(3) 619-626 (1988)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (6)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Characteristic	Expression
Peak wavelength of the mth order	λ_m = 2d/m
Free spectral range–spectral separation between the m and m − 1,m + 1 peak wavelengths	${FSR}_{m} = λ_{m}^{2} / 2 d$
Full width at half-maximum of the mth wavelength spike	$\begin{array}{l} {FWHM}_{m} = {FSR}_{m} / F \\ = λ_{m}^{2} / 2 d F \end{array}$
Finesse fixed by the particular F.P. cavity	F
Cavity spacing	d
Order of interference	m
Interorder contrast	C = 1/(1 + 4F²/π²)
Spectral range	λ_iF–λ_fF

Characteristic	Expression
Linear dispersion	ds/dλ
Magnification	M
Spectral range	λ_iS–λ_fS
Spatial resolution (linear units at the focal plane)	R
Entrance slit width	Ws
Entrance slit height	Hs

Characteristic	Expression
mth channel central wavelength	λ_m = 2d/m
mth channel spectral resolution(FWHM)	${FWHM}_{m} = λ_{m}^{2} / 2 d F$
Spectral separation between the mth channel and the m − 1,m + 1 channels	${FSR}_{m} = λ_{m}^{2} / 2 d$
Linear separation between the mth channel and the m − 1,m + 1 channels at the focal plane	D_m = FSR_m × ds/dλ
Linear channel width	W_c = Ws × M < D_m
Linear channel height	H_c = Hs × M
Lateral chromatic aberration in the dispersion direction	A_m = FWHM_m × ds/dλ
Spatial resolution along the dispersion direction	Limited by A_m and R
Spatial resolution perpendicular to the dispersion direction (linear units at the focal plane)	R
Shortest detectable wavelength	λ_ic is the longest of λ_iF and λ_is
Longest detectable wavelength	λ_fc is the shortest of λ_fF and λ_fs
Spectral range	λ_ic–λ_fc
Interference order of λ_ic	m_i = 2d/λ_ic
Interference order of λ_fc	m_f = 2d/λ_fc
Total number of channels	m_t = m_i − m_f = 2d(1/λ_ic − 1/λ_fc)
Out-of-band rejection	C = 1/(1 + 4F²/π²)

Characteristic	Expression/value
Off-axis parabolic collimator	focal length = 16.9 cm
Flat grating	13,000 line pairs/cm
Concave grating	13,000 line pairs/cm R_c = 100 cm
Spectral range	2200–2700 Å
Spatial resolution	0.4 sec of arc
Entrance slit height	500 sec of arc
Entrance slit width	<D_m/3.2
Magnification	3.2
Linear dispersion (dλ/ds)	75 Å/cm
Plate scale	0.5 sec of arc/10 μm

Characteristic	Value moderate/high spectral resolution
Finesse	37
Cavity spacing	75/150 μm
Interorder contrast	0.002
Spectral range	2250–2650 Å

Characteristic (λ_m = 2450 Å)	Value moderate/high spectral resolution
Spectral resolution (FWHM)	0.11/0.05 Å
Spectral separation between channels	4.0/2.0 Å
Linear separation between channels	0.053/0.027 cm
Linear channel width	<27/<13 sec of arc
Linear channel height	500 sec of arc
Lateral chromatic aberration	0.66/0.33 sec of arc
Spatial resolution along the dispersion direction	0.7/0.5 sec of arc
Spatial resolution along the entrance slit	0.4 sec of arc
Spectral range	2250–2650 Å
Total number of channels	100/200
Out-of-band rejection	0.002
Plate scale	0.5 sec of arc/10 μm

Abstract

Cited By

Figures (2)

Tables (6)

Equations (3)

Applied Optics