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Advantages of an off-Littrow mounting of an echelle grating
Applied Optics, 1988A phenomenon is described in which the size of the exit-slit image of the entrance slit is influenced by the angle at which an echelle grating is used. The phenomenon becomes significant only for large deviations from Littrow conditions. A mathematical treatment and experimental results are presented to show that proper exploitation of the effect ...
R, Masters, C, Hsiech, H L, Pardue
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The Multi-Echelle Grating Arrangement (Mega) Spectrometer
SPIE Proceedings, 1984A spectrometer system, based on the Multi-Echelle Grating Arrangement (MEGA) (1) has been developed. Through series diffraction in an even number of echelle gratings, high dispersion and spectral resolutions are obtained. It can be shown (1) that with n gratings of width W, utilized in a MEGA-spectrometer of focal length f, the same resolution and ...
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Imaging spectrometers based on waveguide echelle diffraction gratings
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016A method to integrate the spectroscopic system of the push-broom scanning imaging spectrometer onto a single chip is proposed using echelle diffraction grating to split the light in the near infrared range according to different wavelengths. The on-chip spectrometer consists of an optical on-off switch array, a multi-input echelle diffraction grating ...
null Minyue Yang +3 more
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Pressure-Scanned Echelle Grating plus Fabry-Perot Stellar Spectrophotometer
Applied Optics, 1972A photoelectric stellar spectrophotometer, with 0.3-A resolution, for use near Halpha (6563 A) is described. A Fabry-Perot etalon and an echelle grating are simultaneously pressure-scanned. The Fabry-Perot can be bypassed and the grating system used alone to obtain narrow-band (4.89-A) Halpha indices, in which case the pressure system allows the ...
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Volume phase holographic echelle grating: a theoretical study
SPIE Proceedings, 2010Volume phase holographic gratings (VPHGs) are becoming fundamental dispersing elements in astronomical instrumentation. Here it will be described the efficiency behavior of such dispersing elements at high diffraction orders for understanding the possible use as echelle gratings.
BIANCO, ANDREA, G. Pariani
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Planar echelle grating DWDM comb filters
2009Optical Fiber Communications Conference ...
Bidnyk, S. +6 more
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Baranne Type Spectrograph with Echelle Grating
Optik, 1976Many astrophysical problems can only be solved by using high dispersion spectrographs. Until recently, Coude-spectrographs have been the most commonly used type of spectrographs for this purpose. But with modern grating ruling techniques it is possible to rule larger echelle gratings and this brings up new possibilities for the spectrograph design.
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Echelle Grating Spectrometers in Analytical Spectrometry
Analytical Chemistry, 1976Peter N. Keliher, Charles C. Wohlers
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Testing echelle gratings: a simple method
Applied Optics, 1987S, Engman, P, Lindblom, B J, Olsson
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Perfect blazing with echelle gratings in TE and TM polarization
Optics Letters, 2012Perfect blazing with echelle gratings in a high-order Littrow mount exists not only with TM polarization, as can perhaps be assumed, but also with TE and TM polarizations simultaneously. This finding contradicts with a heuristic explanation as to why perfect blazing is not possible simultaneously in TE and TM polarizations given by Loewen and Popov ...
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