LaAlO3

Lithium Triborate LiB3O5 (LBO) crystal is an excellent frequency crystal, which is a widely used frequency doubling device.The crystal has good optical uniformity, wide penetration band, and high matching efficiency and laser damage threshold. LBO crystals have stable chemical properties, high mechanical hardness, low deliquescence and birefringence less than BBO crystals, so help to limit the phase matching spectral range.

TGG is an excellent magneto-optical crystal material, which is used in all kinds of Faraday isolators and rotators. The applicable wavelength is 400nm-1100nm (except 475-500nm).

LiTaO3 is an important multifunctional crystal material with excellent piezoelectric, ferroelectric, acoustooptic and electro-optic effects. LiTaO3 has been successfully used in many devices and equipment, especially in electro-optic devices, infrared detectors and surface acoustic wave devices.

LaAlO3 crystal is the substrate material for epitaxial growth of high temperature superconducting thin films and giant magnetoresistance thin films because of its good lattice matching with a variety of perovskite structure materials.

Optical isolator, also known as Faraday isolator, is composed of input polarizer, rotator with magnet, and output polarator. It is a passive device that allows light to pass in one direction and prevents passing in the opposite direction, so that light can only be transmitted in a single direction, while the backward reflected light can be well isolated.

Faraday rotator is based on the nonreciprocity of magneto-optical materials, that is, it can rotate the polarization planes of the normal incident light and the reverse incident light of the same wavelength to the same direction and the same angle, independent of the beam propagation direction. If a Faraday rotator with 45 degree rotation of the polarization plane of the incident beam is placed between a pair of polarizers orthogonal to each other to form an optical isolator, it only allows the forward propagating beam to pass through the system and blocks the backward propagating beam. Faraday rotator is an important component of optical isolator, which is widely used in various laser systems, such as multi-stage laser amplifier, optical parametric oscillator, ring laser, erbium-doped fiber amplifier, seed injection laser, optical switch, optical modulator and so on.

As electro-optical materials in optical communication, it is widely used in parametric oscillator, double frequency, acoustic and optical devices, and optical modulator. The doping of MgO can effectively improve the damage threshold of the crystal.