AO SLM demonstration system and test bed

Michael Wildenhain; Jens Knobbe; Andreas Gehner; Michael Wagner; Hubert Lakner

doi:10.1117/12.702338

14 February 2007 AO SLM demonstration system and test bed

Michael Wildenhain, Jens Knobbe, Andreas Gehner, Michael Wagner, Hubert Lakner

Proceedings Volume 6467, MEMS Adaptive Optics; 64670E (2007) https://doi.org/10.1117/12.702338
Event: MOEMS-MEMS 2007 Micro and Nanofabrication, 2007, San Jose, California, United States

Abstract

In order to demonstrate and to quantitatively evaluate the wavefront correction capabilities of a spatial light modulator (SLM) for optical imaging enhancement in Adaptive Optics (AO) a compact and flexible demonstration system and test bed has been developed. It basically consists of a projection system, where image objects of different complexity and spatial resolution can be implemented and imaged through Adaptive Optics onto a CCD camera. Furthermore, static and dynamic wavefront errors of different severeness can be introduced by means of fixed and rotating phase plates. With this system for the first time the optical performance of the Fraunhofer IPMS 240 × 200 micro mirror SLM for highresolution wavefront control has been characterized. For an incoherent or partially coherent imaging as employed in this case the image quality normally is assessed in terms of the Modulation Transfer Function (MTF). Therefore, a quantitative evaluation has been carried out by measuring the system MTF including the SLM for a number of spatial frequencies as well as for a variety of different complex aberrations without and with applied correction. Besides a description of the system set-up the obtained results on the imaging improvement and MTF measurement are presented.

Citation Download Citation

Michael Wildenhain, Jens Knobbe, Andreas Gehner, Michael Wagner, and Hubert Lakner "AO SLM demonstration system and test bed", Proc. SPIE 6467, MEMS Adaptive Optics, 64670E (14 February 2007); https://doi.org/10.1117/12.702338

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