The possibility of making Volume Binary Gratings to be used in high dispersion instrumentations (echelle) is considered. The idea is to study volume gratings with a binary refractive index profile and to optimize it in terms of refractive index modulation, duty cycle, grating thickness keeping in mind the possible limitations in the realization step. A full design/optimization of these gratings based on Rigorous Couple Wave Analysis (RCWA) has been carried out providing interesting results in terms of diffraction efficiency. A discussion on the realization possibilities is also provided.

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 845043 (13 September 2012); doi: 10.1117/12.925375

Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)