TGG magneto-optical crystals are used in Faraday devices in the field of 400-1100 nm. TGG has many advantages compared to other MO crystals. It has less optical loss, lower thermally induced beam distortion and twice bigger Verdet constant than a terbium doped glass. These features make TGG more aproppriate to high average power applications than Tb doped glass.
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Orientation | [111],±10′ |
Wavefront Distortion | <λ/8 |
Extinction Ratio | >30dB |
Diameter Tolerance | +/-0.05mm |
Length Tolerance | +/- 0.2mm |
Chamfer | 0.10mm @ 45° |
Flatness | <λ/10 at 633nm |
Parallelism | <30″ |
Perpendicularity | <5′ |
Surface Quality | 10/5 |
AR coating | <0.2% |