Thermally tunable optical aperture based on a segmented thin-film resonator

Hendrik Block; Philipp Metz; Jost Adam; Martina Gerken

doi:10.1117/12.2052135

2 May 2014 Thermally tunable optical aperture based on a segmented thin-film resonator

Hendrik Block, Philipp Metz, Jost Adam, Martina Gerken

Proceedings Volume 9130, Micro-Optics 2014; 913002 (2014) https://doi.org/10.1117/12.2052135
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

Apertures are basic elements which can be found in many optical systems. Since optical systems are continuously being miniaturized and integrated, there is a need for small and inexpensive apertures to control beam shape and light intensity. Current aperture concepts for the micrometer regime rely on moving MEMS lamella or controlling fluids by capillary or electrostatic forces. We demonstrate an aperture concept for single-wavelength operation based on thermal tuning of a segmented thin film resonator. Thermal tuning changes the optical thickness of the elastomer cavity. This allows for adjusting the intensity to any level between constructive and destructive interference in a specific aperture segment. In order to demonstrate aperture operation we simulate thermal, mechanical and optical properties using finite element method and transfer-matrix method. We confirm our simulation results by experimental beam shape measurements and spatially-resolved spectral transmission and light intensity measurements.

Citation Download Citation

Hendrik Block, Philipp Metz, Jost Adam, and Martina Gerken "Thermally tunable optical aperture based on a segmented thin-film resonator", Proc. SPIE 9130, Micro-Optics 2014, 913002 (2 May 2014); https://doi.org/10.1117/12.2052135

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available