Beam Steering with Liquid Crystal Polarization Gratings

Electro-optics

Meadowlark Optics’ Liquid Crystal Polarization Gratings utilize spatially varying birefringence to create highly efficient polarization-sensitive gratings. Circularly polarized light can be directed into either the +1 or -1 order depending on the handedness of the incident light. By using a stack of N LCPGs and half-waveplate switches, it is possible to steer to 2ᴺ discrete angles in 1-D or 2-D arrays.

Liquid crystal polarization gratings are also known as geometric phase gratings, Pancharatnam-Berry phase gratings, and diffractive waveplates. These transmissive gratings efficiently (> 99.5%) diffract circularly polarized light to either the first positive or negative order, based on the handedness of the incident light. By incorporating fast electro-optic half-wave polarization retarders to control the handedness of polarization, Meadowlark can develop custom LCPG devices and systems with a range of leading capabilities:

Wide-angle beam steering > 100°
Large apertures > 20 cm
Sub-millisecond switching times
Dramatically reduced size, weight, and power (SWaP) requirements
Random-access and inertia-less beam steering
Dynamic focusing also available

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Green Architecture

Evermind™ template is crafted like sustainable structures — clean, scalable, and built to last.

Precision Engineering

Every layout and component is tuned with variables and pixel-perfect details, so your brand stands on solid ground.

Dynamic Interactions

From nature-inspired transitions to fluid page structures, Evermind™ feels alive yet quietly sophisticated.

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