Ferrofluid based deformable mirrors -: A new approach to adaptive optics using liquid mirrors

被引：9

作者：

Laird, PR ^{[1
]}

Bergamasco, R ^{[1
]}

Bérubé, V ^{[1
]}

Borra, EF ^{[1
]}

Gingras, J ^{[1
]}

Ritcey, A ^{[1
]}

Rioux, M ^{[1
]}

Robitaille, N ^{[1
]}

Thibault, S ^{[1
]}

da Silva, LV ^{[1
]}

Yockell-Lelièvre, H ^{[1
]}

机构：

[1] Univ Laval, Dept Phys, Ctr Opt Photon & Laser, Laval, PQ, Canada

来源：

ADAPTIVE OPTICAL SYSTEM TECHNOLOGIES II, PTS 1 AND 2 | 2003年 / 4839卷

关键词：

D O I：

10.1117/12.459065

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The trend towards ever larger telescopes and more advanced adaptive optics systems is driving the need for deformable mirrors with a large number of low cost actuators. Liquid mirrors have long been recognized a potential low cost alternative to conventional solid mirrors. By using a water or oil based ferrofluid we are able to benefit from a stronger magnetic response than is found in magnetic liquid metal amalgams and avoid the difficulty of passing a uniform current through a liquid. Depositing a thin silver colloid known as a metal liquid-like film (MELLF) on the ferrofluid surface solves the problem of low reflectivity of pure ferrofluids. This combination provides a liquid optical surface that can be precisely shaped in a magnetic field. We present experimental results obtained with a prototype deformable liquid mirror based on this combination.

引用

页码：733 / 740

页数：8

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