Echelle gratingpdf

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You will notice that the lower power lenses (4X and 10X) are shorter than the high power lenses (40X and 100X), meaning that the clearance between the objective ...

Newportechelle Grating

An Echelle grating is a type of diffraction grating characterized by its constructively large step height and blaze angle, designed for high-resolution spectroscopic applications. Echelle gratings are used to disperse light into its component wavelengths. However, unlike conventional gratings, they are optimized to work at high diffraction orders, which allows for the separation of spectral lines that are extremely close in wavelength.

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The CS-mount is similar to the C-Mount, except it has a shorter flange focal distance, making it appropriate for smaller sensors. CS-mount lenses are commonly ...

Echelle gratings utilize a phenomenon known as diffraction, which occurs when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. The Echelle grating is tilted at a steep angle, known as the blaze angle, to direct most of the diffracted light into a preferred order, often much higher than those used in typical diffraction gratings. This blaze angle enhances the efficiency of the grating in that order, resulting in brighter and clearer spectra.

The high resolution and efficiency of Echelle gratings come at the cost of a more complex optical setup. Multiple diffraction orders often overlap in the spectrum produced by an Echelle grating, which requires the use of additional optics, such as prisms or cross-dispersive gratings, to spatially separate the orders for analysis.

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Echelle gratings are primarily used in spectroscopy for the analysis of atomic and molecular spectra. Specifically, they serve in the following roles:

by F Lei · 1993 · Cited by 12 — Measurement of the numerical aperture and f-number of a lens system by using a phase grating. F. Lei and L. K. Dang. A simple method for measuring both the ...

Echelle gratingspectrometer

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Paraxial Approximation¶ ... [1]. Transfer Matrix methods can also be applied. The term occurs in other areas as well, notably light optics [4] [5].

One of these setups will provide you with more freedom than locking yourself into a lens mount that cannot be used on any other camera brand.