2025 SMSI Bannerklein

Plenary Talk 4 - Smart adaptive photonic sensor systems

Event
AMA Conferences 2015
2015-05-19 - 2015-05-21
Nürnberg, Germany
Band
AMA Conferences 2015
Chapter
Proceedings SENSOR 2015
Author(s)
J. Czarske, H. Radner, N. Koukourakis, L. Büttner - School of Engineering TU Dresden (Germany)
Pages
30 - 33
DOI
10.5162/sensor2015/4
ISBN
978-3-9813484-8-4
Price
free

Abstract

Adaptive optics is a rapidly developing field. Predominantly adaptive optics is known from astronomy, where it has led to a renaissance of large earth-bound telescopes. Optical distortions of the light path through the atmosphere are corrected by controlled adaptive elements such as optical Micro-Electro- Mechanical Systems (MEMS). Currently adaptive optics for a variety of applications is used. They allow in ophthalmology a fine resolution of the retina. Intriguing is the possibility to resolve retinal cells by adaptive optics, which enables an early detection of the risk for diseases such as heart and brain stroke. Adaptive optics is also found as electrically controllable focusing elements of digital CCD/CMOS cameras in cell phones. We have harnessed the power of various programmable photonics devices for the interferometric measurement and sensor techniques. This invited plenary talk will describe research conducted to demonstrate distortion-free laser measurements through a dynamic interface by a closed-loop optoelectronic system. We are employing electrically tunable optofluidics membrane lenses and MEMS micro mirrors to correct low-order wavefront distortions effectively. Our work represents a paradigm shift in measurement and sensor techniques from using static to dynamic daptive optical elements.

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