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TSAG is a key isolator material for fiber lasers. As an ideal visible and infrared magneto-optic crystal, it has the advantages of high Verdet constant and excellent thermal and mechanical properties.
Main Feature
Large Verdet constant (48rad/T m @ 1064nm), about 20% higher than TGG;
Low absorption (<2500ppm/cm @ 1064nm)
high power applications
Isolator Miniaturization
Typical Application
Faraday rotators, optical isolators
Material Properties
| molecular formula | Tb 3 Sc 2 Al 3 O 12 |
| Lattice parameters | a=12.3 Å |
| Growth method | Czochralski |
| Density | 5.91g/ cm3 |
| Melting point | 1970±10℃ |
| Transmittance range | 400nm-1600nm |
| Verdet constant (rad/M/T) | 218/152/48 @532nm/633nm/1064nm |
Product Parameters
| Orientation accuracy | [111]±15′ |
| wavefront distortion | <λ/8 |
| Extinction Ratio | >30dB |
| Diameter Tolerance | 0.00-0.05mm |
| Length Tolerance | ±0.1mm |
| Chamfer | ＜0.1mm @45° |
| Flatness | <λ/10 @633nm |
| Parallelism | ＜30″ |
| Perpendicularity | <5' |
| smoothness | 10-5 |
| coating | AR, R<0.2%@1064nm or according to customer requirements |
| damage threshold | >10J/cm 2 @1064nm 10ns 10KHZ |
