Optical beam steering and switching by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency PTR Bragg gratings
نویسندگان
چکیده
منابع مشابه
Characterization of PDLC Holographic Gratings
We have studied the optical properties of electrically switched holographic gratings fabricated using polymer-dispersed liquid crystal (PDLC) materials. We have found that the PDLC mixture can be used to control the diffractive properties of the composite gratings, including the anisotropy of the grating. 2000 Optical Society of America OCIS codes: (050.0050) Diffraction and gratings, (050.733...
متن کاملHigh-speed Multi-level 512x512 Spatial Light Modulator
Recent advancements in our high-speed multi-level (analog) 512x512 liquid crystal Spatial Light Modulator (SLM) will be presented. These advancements include smaller pixel pitch, greatly improved optical efficiency, and higher speed operation. The new VLSI SLM can utilize Ferroelectric Liquid Crystal (FLC) or Nematic Liquid Crystal (NLC) to achieve phase-only, amplitude-only, and phase-amplitud...
متن کاملSwitchable Bragg diffraction from liquid crystal in colloid-templated structures
– We have incorporated nematic liquid crystal into periodic, polymer host structures templated from self-assembled colloids. Using these composite materials, we demonstrate the first electrically switchable three-dimensional Bragg diffraction. The switchable beam deflection is potentially useful for non-mechanical beam steering and optical beam splitting devices. We compare the electro-optic re...
متن کاملOptically Controlled Phased Array Radar Receiver Using SLM Switched Real Time Delays
We report the results of a demonstration of a real time delay, optically controlled phased array radar receiver. This implementation employed a free space configuration based upon an optical switching network using liquid crystal spatial light modulators (SLM’s). A three-delay unit, two-antenna array receiver was implemented at an optical wavelength of 1.3 pm and demonstrated “squint-free” oper...
متن کاملSpatial light modulator considerations for beam control in optical manipulation applications
Holographic beam forming to generate and control multiple optical traps has proved successful using high-resolution spatial light modulators (SLMs). This type of beam control allows a multitude of traps to be independently controlled in three dimensions. Also, exotic beam shapes and profiles can be generated, which gives the optical trapping system even greater flexibility. Until recently, the ...
متن کامل