Abstract
This paper describes the design, fabrication, and testing of two hollow prisms. One is a prism with a grating glued to its hypotenuse. This ensemble, prism + grating, is called a grism. It can be applied as an on-axis tunable spectrometer. The other hollow prism is a constant deviation one called a Pellin-Broca. It can be used as a tunable dispersive element in a spectrometer with no moving parts. The application of prisms as temperature sensors is shown.
Highlights
A grism [1] is an optical structure that has a prism and a grating arranged to keep light, with a given wavelength, undeviated as it passes through the grism
The first diffracted column shows theFor liquid refractive index, second columnofshows the deviation anglewas for the first order
We have shown that it is possible to fabricate hollow grisms that cover a spectral band in the
Summary
A grism [1] is an optical structure that has a prism and a grating arranged to keep light, with a given wavelength, undeviated as it passes through the grism. The grating is placed in the hypotenuse of the prism. This grating can be ruled directly into the hypotenuse or it can be replicated with the help of a resin and glued to the prism. Grisms are used in astronomy to create a dispersed spectrum centered on the location of the object in the camera field of view. With this method cameras are converted to spectrographs. Grisms are used as pulse shapers and for pulse compression [2] and dispersion compensation of femtosecond pulses
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