Nematic liquid crystal/ITO glass, anti-parallel liquid crystal cell, with mechanical housing and wiring

Uniform in-plane alignment of liquid crystal molecular fast axes, tunable retardance from tens of nanometers to λ/2 via externally applied AC electric field (DC electric field not allowed)

Functionality as a polarization modulator or pure phase retarder

External voltage input and control capability for active liquid crystal devices

AC square wave generation with fixed fundamental frequency, dual-voltage output available, and switching frequency adjustable

Various control options via panel buttons, external input, or command-line interface

Nematic liquid crystal/thin-film linear polarizer, 90° TN-aligned liquid crystal cell, with mechanical housing and wiring

Voltage-controlled optical switching, without internal mechanical vibration

High transmission, high switching contrast ratio, fast switching response speed

Composed of a liquid crystal variable retarder and a polymer true zero-order quarter-wave plate, supplemented with a mechanical housing and wiring

Fast-axis alignment at 45° between the liquid crystal variable retarder and the quarter-wave plate, single-wavelength device

Continuous polarization direction rotation of the incident linearly polarized light over 180° enabled by external electric field

Nematic liquid crystal/ITO glass, anti-parallel liquid crystal cell, with mechanical housing and wiring

Uniform in-plane alignment of liquid crystal molecular fast axes, tunable retardance from tens of nanometers to λ/2 or from 0 to λ/2 via externally applied AC electric field (DC electric field not allowed)

Functionality as a polarization modulator or pure phase retarder

Longitudinal Pockels cells

High extinction ratio, high transmission

Applications in Q-switching, regenerative amplification, pulse picking, cavity dumping, high-frequency optical switching, choppers, optical power stabilization, etc.