Meadowlark Optics
Liquid Crystal Polarization Grating (LCPG) Technology
Liquid Crystal Polarization Grating (LCPG) Technology
Use the arrow icon – – below the preview to enlarge the pdf. Escape key exits fullscreen. Download Data Sheet PDF
Meadowlark Optics’ Liquid Crystal Polarization Gratings use varying birefringence to create highly efficient polarization-sensitive gratings. They efficiently diffract circularly polarized light into either the first positive or negative order, depending on the incident light’s handedness. By stacking these gratings and using half-waveplate switches, it’s possible to steer light into 2N discrete angles in 1-D or 2-D arrays.
Also known as geometric phase gratings, Pancharatnam-Berry phase gratings, and diffractive waveplates, these gratings can be customized by Meadowlark. They offer wide-angle beam steering (> 100°), large apertures (> 20 cm), sub-millisecond switching times, reduced size, weight, and power (SWaP) requirements, random-access, inertia-less beam steering, and dynamic focusing.
Meadowlark can provide custom systems to meet your needs using the patented liquid crystal polarization grating (LCPG) beam steering technology. When contacting us for a quote, please provide:
- Clear Aperture (mm)
- Operating Wavelength (nm)
- 1D or 2D Steering
- Number of Angles
- Maximum Steering Angle (°)
- Response Time/Switching Speed (ms)
- Housing/Mechanical Interface Requirements