Presentation + Paper
16 March 2023 Performance metrics and active temperature control of spatial light modulators
Connor Wolenski, Anna Linnenberger
Author Affiliations +
Abstract
Liquid crystal on silicon (LCoS) spatial light modulators (SLMs) are versatile scientific tools relevant to an increasingly wide variety of research and technological applications including digital holography, wavefront correction, optical tweezing, and non-mechanical beam steering to name a few. Since SLMs are used in a multitude of different ways, some aspects of device performance (e.g., response time) are crucial to certain applications while being irrelevant to others. In this work we couple our standard SLMs with a thermo-electric cooler, allowing for tunability of the device operating temperature from 0° to 75 °C. We show that there is an inherent tradeoff between the liquid crystal response time and the phase stability of an SLM, and that the operating temperature offers a means of controlling this tradeoff. Furthermore, this paper aims to provide the reader with a brief but thorough explanation of SLM operating principles and device structure, defines the performance metrics of the SLM, and provides a methodology for measuring the specifications. By allowing control over the SLM operating temperature and detailing how temperature affects device functionality, SLM users are afforded greater experimental flexibility and will be better able to tailor the performance of their device for the given project or application at hand.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Connor Wolenski and Anna Linnenberger "Performance metrics and active temperature control of spatial light modulators", Proc. SPIE 12388, Adaptive Optics and Wavefront Control for Biological Systems IX, 1238802 (16 March 2023); https://doi.org/10.1117/12.2649408
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KEYWORDS
Spatial light modulators

Liquid crystals

Diffraction

Calibration

Blazed gratings

Computer hardware

Modulation

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