LTF Lithium Terbium Fluoride
LTF lithium terbium fluoride (LiTbF 4 ) crystal has a tetragonal scheelite structure, the c-axis is the optical axis, and has the characteristics of large Verdet constant, low bulk absorption coefficient, negative thermo-optic coefficient and small nonlinear coefficient. It is a magneto-optic crystal material with excellent performance. When LTF crystals are used in high-power Faraday rotators and magneto-optical isolators, they can overcome the problems of traditional TGG crystals, such as the decrease in isolation caused by the "temperature rise" caused by the large volume absorption coefficient, and the deterioration of the quality of the front-end beam. After years of technical research, the company has realized the stable production of LTF crystals with a diameter of 2 inches, and can provide users with customized LTF crystal products of various sizes and specifications.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Crystal diameter | 2mm～15mm |
| Crystal length | 10mm～40mm |
| crystal axis | c-axis |
| Orientation accuracy | ≤5′ |
| Extinction Ratio | ≥30dB |
| use band | 400～1500nm (except Tb ion intrinsic absorption peak around 487nm) |
| Body Absorption Coefficient | ≤150 ppm/cm |
| through wavefront distortion [25mm；@633nm] | ≤0.125λ/25mm @633nm |
| Verdet constant [@1064nm] | 38 rad/T•m @1064nm |
| Side droop | ≤5′ |
| Flatness of end face [@633nm] | ≤λ/10 @633nm |
| Parallelism of end faces | ≤10″ |
| AR Coating Residual Reflectance | AR,R ≤0.2% |
Key Features
Datasheet
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