The Magdalena Ridge Observatory Interferometer: custom near-IR beamsplitter and AR coatings

被引：0

作者：

Block, E. K. ^{[1
]}

Jurgenson, C. A. ^{[1
]}

Busher, D. F. ^{[2
]}

Haniff, C. A. ^{[2
]}

Young, J. S. ^{[2
]}

Creech-Eakman, M. J. ^{[1
]}

Jaramillo, A. ^{[3
]}

Schmell, R. ^{[3
]}

机构：

[1] New Mexico Inst Min & Technol, Magdalena Ridge Observ, 801 Leroy Pl, Socorro, NM 87801 USA

[2] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England

[3] Opt Surface Technol, Albuquerque, NM 87107 USA

来源：

OPTICAL AND INFRARED INTERFEROMETRY | 2008年 / 7013卷

关键词：

MROI; interferometry; beamsplitter; anti-reflection (AR); coatings; pupil plane combination;

D O I：

10.1117/12.788229

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This report focuses on the design, application, and testing Of Custom beamsplitter and anti-reflection coatings for use in the Magdalena Ridge Observatory Interferometer (MROI) beam combiners. The coatings were designed in collaboration with Optical Surface Technologies, and the University of Cambridge. The fringe tracker and science combiners will operate across the J, H, and K bands. The coatings were designed to achieve three optical characteristics critical to optical interferometry: 1) minimized stress of the substrate (leading to induced wavefront errors), 2) high throughput, and 3) high visibilities in broadband unpolarized light. The AR coating has mean reflection losses of less than 0.5%. Beamsplitter coatings experienced visibility losses less than 1% due to group delay dispersion and s and p phase differences.

引用

页数：9

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