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TSAG - Terbium Scandium Aluminum Garnet
IntroductionTerbium Scandium Aluminum Garnet (Tb3Sc2Al3O12, TSAG) is the key isolator material for next generation fiber laser. As an ideal magneto-optic crystal in visible and infrared regions, TSAG has the advantages of high Verdet constant, excellent thermal and mechanical properties.
CASTECH's magneto-optical crystal TSAG is featured by
• Large Verdet constant (48 Rad T-1m-1 at 1064 nm), about 20-30% higher than that of TGG
• Low absorption (<3000 ppm/cm at 1064 nm), about 30% less than that of TGG
• High power compliant
• Low thermally-induced birefringence
• Ideal for compact magneto-optic devices
Main Applications
- Faraday Rotators
- Optical
|
Table 1. Basic Properties |
|
|
Transparency Range |
400-1600 nm |
|
Crystal Structure |
Cubic, Space group Ia3d |
|
Chemical Formula |
Tb3Sc2Al3O12 |
|
Lattice Parameter |
a = 12.3 Å |
|
Growth Method |
Czochralski |
|
Density |
5.91 g/cm3 |
|
Melting Point |
1970 ℃ ± 10 ℃ |
Specifications of TSAG crystal from CASTECH
|
Table 2. Specifications |
|
|
Orientation |
within±15′ |
|
Extinction Ratio |
≥ 30 dB |
|
Diameter Tolerance |
± 0.1 mm |
|
Length Tolerance |
± 0.2 mm |
|
Surface Qquality (scratch/dig) |
10/5 to MIL-PRF-13830B |
|
Flatness |
＜λ/8 @633 nm |
|
Wavefront Distortion |
＜λ/8 @633 nm |
|
Parallelism |
20 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Chamfer |
≦0.2 mm × 45° |
|
AR coating |
<0.2% @1064 nm Other coatings are available upon request |
Products
-
TSAG - Terbium Scandium Aluminum Garnet
- Terbium Scandium Aluminum Garnet (Tb3Sc2Al3O12, TSAG) is the key isolator material for next generation fiber laser. As an ideal magneto-optic crystal in visible and infrared regions, TSAG has the advantages of high Verdet constant, excellent thermal and mechanical properties.
-
IntroductionTerbium Scandium Aluminum Garnet (Tb3Sc2Al3O12, TSAG) is the key isolator material for next generation fiber laser. As an ideal magneto-optic crystal in visible and infrared regions, TSAG has the advantages of high Verdet constant, excellent thermal and mechanical properties.
CASTECH's magneto-optical crystal TSAG is featured by
• Large Verdet constant (48 Rad T-1m-1 at 1064 nm), about 20-30% higher than that of TGG
• Low absorption (<3000 ppm/cm at 1064 nm), about 30% less than that of TGG
• High power compliant
• Low thermally-induced birefringence
• Ideal for compact magneto-optic devices
Main Applications
- Faraday Rotators
- Optical
|
Table 1. Basic Properties |
|
|
Transparency Range |
400-1600 nm |
|
Crystal Structure |
Cubic, Space group Ia3d |
|
Chemical Formula |
Tb3Sc2Al3O12 |
|
Lattice Parameter |
a = 12.3 Å |
|
Growth Method |
Czochralski |
|
Density |
5.91 g/cm3 |
|
Melting Point |
1970 ℃ ± 10 ℃ |
Specifications of TSAG crystal from CASTECH
|
Table 2. Specifications |
|
|
Orientation |
within±15′ |
|
Extinction Ratio |
≥ 30 dB |
|
Diameter Tolerance |
± 0.1 mm |
|
Length Tolerance |
± 0.2 mm |
|
Surface Qquality (scratch/dig) |
10/5 to MIL-PRF-13830B |
|
Flatness |
＜λ/8 @633 nm |
|
Wavefront Distortion |
＜λ/8 @633 nm |
|
Parallelism |
20 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Chamfer |
≦0.2 mm × 45° |
|
AR coating |
<0.2% @1064 nm Other coatings are available upon request |
Enquiry
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