Deformable mirrors for X-ray astronomy and beyond

被引：7

作者：

Ulmer, M. P. ^{[1
,2
]}

Graham, M. E. ^{[2
,3
]}

Vaynman, S. ^{[2
,3
]}

Cao, J. ^{[4
]}

Takacs, P. Z. ^{[5
]}

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

[2] Northwestern Univ, Ctr Interdisciplinary Explorat & Res, Evanston, IL 60208 USA

[3] Northwestern Univ, Dept Mat Sci, Evanston, IL 60208 USA

[4] Northwestern Univ, Dept Engn Mech, Evanston, IL 60208 USA

[5] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

EUV AND X-RAY OPTICS: SYNERGY BETWEEN LABORATORY AND SPACE II | 2011年 / 8076卷

关键词：

Magnetically Smart Materials; X-ray Optics; Adaptive Optics; SPRINGBACK; FILMS; MAGNETOSTRICTION; PREDICTION;

D O I：

10.1117/12.890756

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss a technique of shape modification that can be applied to thin walled (similar to 100-400 micron thickness) electroformed replicated optics or slumped glass optics to improve the near net shape of the mirror as well as the mid-frequency ripple. The process involves sputter deposition of a magnetic smart material (MSM) film onto a permanently magnetic material. The MSM material exhibits strains about 400 times stronger than ordinary ferromagnetic materials. The deformation process involves a magnetic write head which traverses the surface, and under the guidance of active metrology feedback, locally magnetizes the surface to impart strain where needed. Designs and basic concepts as applied to space borne X-ray optics will be described.

引用

页数：10

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