EO Amplitude Modulator Wavelength 600 - 900 NM

Thorlabs free-space electro-optic (EO) amplitude lithium niobate modulator combines our experience with crystal growth and electro-optic materials. Our EO amplitude modulator uses MgO-doped lithium niobate for high power operation. The modulator has an SMA RF input, which is ...Thorlabs free-space electro-optic (EO) amplitude lithium niobate modulator combines our experience with crystal growth and electro-optic materials.

Our EO amplitude modulator uses MgO-doped lithium niobate for high power operation. The modulator has an SMA RF input, which is directly compatible with our HVA200 High Voltage Amplifier.The electro-optic amplitude modulator (EO-AM) is a Pockels cell type modulator consisting of two matched lithium niobate crystals packaged in a compact housing with an RF input connector. Applying an electric field to the crystal induces a change in the indices of refraction (both ordinary and extraordinary) giving rise to an electric field dependent birefringence which leads to a change in the polarization state of the optical beam.

The EO crystal acts as a variable waveplate with retardance linearly dependent on the applied electric field. By placing a linear polarizer at the exit, the beam intensity through the polarizer varies sinusoidally with linear change in applied voltage.