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Optical Engineering • Open Access • new

Laser-induced damage threshold of camera sensors and micro-optoelectromechanical systems
Author(s): Bastian Schwarz; Gunnar Ritt; Michael Koerber; Bernd Eberle

Paper Abstract

The continuous development of laser systems toward more compact and efficient devices constitutes an increasing threat to electro-optical imaging sensors, such as complementary metal–oxide–semiconductors (CMOS) and charge-coupled devices. These types of electronic sensors are used in day-to-day life but also in military or civil security applications. In camera systems dedicated to specific tasks, micro-optoelectromechanical systems, such as a digital micromirror device (DMD), are part of the optical setup. In such systems, the DMD can be located at an intermediate focal plane of the optics and it is also susceptible to laser damage. The goal of our work is to enhance the knowledge of damaging effects on such devices exposed to laser light. The experimental setup for the investigation of laser-induced damage is described in detail. As laser sources, both pulsed lasers and continuous-wave (CW)-lasers are used. The laser-induced damage threshold is determined by the single-shot method by increasing the pulse energy from pulse to pulse or in the case of CW-lasers, by increasing the laser power. Furthermore, we investigate the morphology of laser-induced damage patterns and the dependence of the number of destructive device elements on the laser pulse energy or laser power. In addition to the destruction of single pixels, we observe aftereffects, such as persistent dead columns or rows of pixels in the sensor image.

Paper Details

Date Published: 20 March 2017
PDF: 11 pages
Opt. Eng. 56(3) 034108 doi: 10.1117/1.OE.56.3.034108
Published in: Optical Engineering Volume 56, Issue 3
Show Author Affiliations
Bastian Schwarz, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Gunnar Ritt, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Michael Koerber, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Bernd Eberle, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)


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