Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Applications of shape memory alloys in optics

Not Accessible

Your library or personal account may give you access

Abstract

The application of shape memory alloy (SMA) thin films in optical devices is introduced and explored for the first time. Physical and optical properties of titanium–nickel (TiNi) SMA thin films change as these films undergo phase transformation on heating. An optical beam can be modulated either mechanically with a TiNi actuator or by the changes that occur in TiNi’s optical properties upon heating and phase transformation. Reflection coefficients of TiNi films were measured in their so-called martensitic (room-temperature) and austenitic (elevated-temperature) phases. The reflection coefficients of the austenitic phase were higher than those of the martensitic phase by more than 45% in the wavelength range between 550 and 850 nm. Also, a microfabricated TiNi diaphragm with a 0.26-mm-diameter hole was used as a prototype light valve. The intensity of the transmitted light through the hole was reduced by 10%–17% when the diaphragm was heated. A novel TiNi light valve fabricated by using silicon micromachining techniques is also proposed and discussed. We present both optical data and structural data obtained by using transmission electron microscopies.

© 1998 Optical Society of America

Full Article  |  PDF Article
More Like This
Deformable curvature and beam scanning with an elastomeric concave grating actuated by a shape memory alloy

Raphael A. Guerrero, Michelle Wynne C. Sze, and Jose Ramon A. Batiller
Appl. Opt. 49(19) 3634-3639 (2010)

High power handling shape memory alloy optical fiber connector

Dominic Faucher, Alex Fraser, Patrick Zivojinovic, Xavier Pruneau Godmaire, Éric Weynant, Martin Bernier, and Réal Vallée
Appl. Opt. 48(30) 5664-5667 (2009)

Shape memory alloy-based 3D morphologically reconfigurable chiral metamaterial for tailoring circular dichroism by voltage control

Lixin Jiang, Qi Yuan, Hao Yang, Yongfeng Li, Lin Zheng, Zhibiao Zhu, Shuang Liang, Yongqiang Pang, He Wang, Jiafu Wang, and Shaobo Qu
Photon. Res. 11(3) 373-382 (2023)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved