GGG

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.

TSAG is the key isolator material of the next generation fiber laser. As an ideal visible and infrared magneto-optical crystal, TSAG has the advantages of high Verdet constant, excellent thermal and mechanical properties.

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.

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.

Sggg crystal, namely Ca Mg Zr doped gadolinium gallium garnet, is an excellent substrate material for Bi Fe garnet epitaxial films.