학술논문

High-efficiency echelle gratings for MIGHTI, the spatial heterodyne interferometers for the ICON mission
Document Type
Report
Author abstract
Source
Applied Optics. March 10, 2017, Vol. 56 Issue 8, p2090, 9 p.
Subject
Diffraction gratings -- Research
Interferometers -- Usage
Accuracy and precision -- Analysis
Astronomy
Physics
Language
English
ISSN
1559-128X
Abstract
Development of a new generation of low-groove density-blazed echelle gratings optimized for MIGHTI, a space-borne spatial heterodyne interferometer operating in the visible and near infrared is described. Special demands are placed on the wavefront accuracy, groove profile, and efficiency of these gratings. These demands required a new ruling for this application, with significant improvements over existing gratings. Properties of a new generation of highly efficient, plane gratings with blazed at 8.2[degrees] are reported.