Faraday Rotating Glass – Magneto-optical Glass – Customized Products

Product ID: 6815

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$100

Faraday Rotating Glass – Magneto-optical Glass – Customized Products

Faraday rotating glass is a magneto-optical glass with good transmittance in the visible and infrared range (520-1400nm). It can rotate the polarization plane of a beam of polarized light passing parallel to the magnetic field direction and is a glass functional material with a strong Faraday effect. Because of its “non-reciprocity”, it can rotate the polarization plane of both forward- and reverse-incident light of the same wavelength in the same direction by the same angle, regardless of the direction of light beam propagation. This material is widely used to make Faraday rotators based on these properties. TG20 has been widely used in switches, modulators, sensors, and magneto-optical isolators.

Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.

FEATURES
Verdet constant high
Good chemical durability
Excellent transparency

Material Specifications

Diameter Tolerance < λ/8 @ 633nm
Length Tolerance ±0.05mm
Flatness <λ/8 @ 633nm
Surface Finish 10/5 S/D
Parallelism < 5‘’
Clear Aperture >90%
Chamfer 0.1mm x 45°


Physical and Chemical Properties

Material TG20 TG28
Refractive index thermal coefficient（10-7  /℃） 74 –
Thermal coefficient of optical path（10-7 /℃） 105 –
Transmission Window（nm） 520-1400 520-1400
Thermal Coefficient of Expansion（10-7 /℃） 51.3 69
Transformation Temperature（℃） 760 759
Sag of temperature（℃） 800 800
Density（g / cm3） 4.32 4.99
Young’s Modulus (GPa） 108
Poisson Ratio 0.22
Knoop Hardness（Kg/cm2 ） 760


Optical and Spectral Properties

Material TG20 TG28
Refractive Index（1064nm) 1.6721 1.736
Refractive Index（@589.3nm） 1.6888 1.75
Nonlinear refractive index（10-13 e.s.u) 2.46 2.42
Abbe Value 53.14 50.98

Spectrum

TaorLab laser crystals

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