Spectral and Angular Dependences of the Efficiency of Three-Layer Relief-Phase Diffraction Elements of the IR Range
- Russian Academy of Sciences, Scientific and Technological Center of Unique Instrumentation (Russian Federation)
- Penza State University of Architecture and Civil Engineering (Russian Federation)
- Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)
Within the framework of the scalar and rigorous diffraction theory based on solving a system of Maxwell equations, saw-tooth relief-phase three-layer microstructures designed for the work with polychromatic radiation of the mid-IR range (3 ≤ λ ≤ 5 μm) are studied. The series of effective microstructures composed of different optical materials is extended, and the depths of their reliefs are minimized. The series is extended, in particular, owing to microstructures in which Fresnel losses for reflection from both reliefs do not exceed 10%. This factor, in combination with the relatively low total relief depth, can turn out to be decisive when choosing one or another microstructure for solving a specific scientific or technological problem.
- OSTI ID:
- 22786339
- Journal Information:
- Optics and Spectroscopy, Journal Name: Optics and Spectroscopy Journal Issue: 1 Vol. 125; ISSN 0030-400X; ISSN OPSUA3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Limiting spectral and angular characteristics of multilayer relief – phase diffraction microstructures
Subwavelength diffraction gratings in the visible spectral range