Designing a new spatial light modulator for holographic photostimulation

Janelle C. Shane; Douglas J. McKnight; Adrian Hill; Kevin Taberski; Steve Serati

doi:10.1117/12.2528558

9 September 2019 Designing a new spatial light modulator for holographic photostimulation

Janelle C. Shane, Douglas J. McKnight, Adrian Hill, Kevin Taberski, Steve Serati

Proceedings Volume 11083, Optical Trapping and Optical Micromanipulation XVI; 1108306 (2019) https://doi.org/10.1117/12.2528558
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States

Abstract

Driven by the demands for speed and field of view in the holographic photostimulation community, we designed, built, and tested a liquid crystal on silicon (LCoS) spatial light modulator (SLM) with a 1536x1536 square pixel array and high-voltage LC drive. We discuss some of the engineering work that made the MacroSLM possible, including the custom FPGA board for handling huge data rates, the large pixel size for minimizing rolloff and crosstalk, and the temperature control to handle heating effects from the high-voltage controls and high-power laser illumination. We also designed an FPGA implementation of the overdrive method for increasing liquid crystal switching speed, allowing us to overcome the significant data bottlenecks that limit frame rates for large arrays. We demonstrate 500 Hz hologram-tohologram speed at 1064 nm operating wavelength, and discuss the new science that these speeds and array sizes have enabled.

Conference Presentation

Citation Download Citation

Janelle C. Shane, Douglas J. McKnight, Adrian Hill, Kevin Taberski, and Steve Serati "Designing a new spatial light modulator for holographic photostimulation", Proc. SPIE 11083, Optical Trapping and Optical Micromanipulation XVI, 1108306 (9 September 2019); https://doi.org/10.1117/12.2528558

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