Demonstrates effective wavefront control using a liquid crystal display panel in adaptive optics, highlighting its potential for high-contrast imaging.
Deformable Mirrors (DMs) that are used in Adaptive Optics applications utilize various technologies such as Voice Coils, Piezoelectric, or Microelectromechanical actuators to manipulate the wavefronts of light. We present a cost-effective alternative for coronagraphic wavefront control using a Liquid Crystal Display (LCD) panel. A transmissive, phase-only Spatial Light Modulator is fashioned out of a monochrome LCD panel, using which we demonstrate Focal Plane Wavefront Control by digging a coronagraphic dark-hole with a Vector Vortex Coronagraph in laser light. We discuss the efficacy of such a device for high-contrast imaging and discuss avenues of improvement.
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Hewawasam et al. (2025) studied this question.
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