PRODUCTS
MESSAGES
Er:YAG - Erbium Doped Yttrium Aluminum Garnet
Introduction
Erbium Doped Yttrium Aluminum Garnet (Er:YAG) is an excellent laser crystal which lases at 2940 nm. This band is at the hydroxyl absorption peak which can be strongly absorbed by biological tissues. So it widely applies to medical area, such as dental (hard tissues), orthopedics, etc.
CASTECH's laser crystal Er:YAG is featured by
• High slope efficiency • Operate well at room temperature
• Operate in a relatively eye-safe wavelength range
|
Table 1. Optical and Spectral Properties |
|
|
Laser Transition |
4I3/2→4I11/2 |
|
Laser Wavelength |
2940 nm |
|
Photon Energy |
6.75 × 10-20 J @2.940 µm |
|
Emission Cross Section |
3 × 10-20 cm2 |
|
Refractive Index |
1.79 @2.940 µm |
|
Pump Bands |
600~800 nm |
|
Table 2. Specifications |
|
|
Dopant Concentration |
Er: ~50 at.% |
|
Rod Sizes |
Diameter: 3~6 mm, Length: 50~120 mm; Upon request of customer |
|
Dimensional Tolerances |
Diameter: ±0.1mm Length: ±0.5 mm |
|
Surface Quality (Scratch/Dig) |
10/5 to MIL-PRF-13830B |
|
Wavefront Distortion |
λ/8 @633 nm |
|
Flatness |
λ/8 @633 nm |
|
Parallelism |
≦30 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Chamfer |
≦0.2 mm×45° |
|
Extinction Ratio |
≧25 dB |
|
AR Coating Reflectivity |
≦0.2% @2940 nm |
Products
-
Er:YAG - Erbium Doped Yttrium Aluminum Garnet
- Er:YAG is an excellent laser crystal which lasers at 2940 nm. This band is at the hydroxyl absorption peak which can be strongly absorbed by biological tissues. So it widely applies to medical area.
-
Introduction
Erbium Doped Yttrium Aluminum Garnet (Er:YAG) is an excellent laser crystal which lases at 2940 nm. This band is at the hydroxyl absorption peak which can be strongly absorbed by biological tissues. So it widely applies to medical area, such as dental (hard tissues), orthopedics, etc.
CASTECH's laser crystal Er:YAG is featured by
• High slope efficiency • Operate well at room temperature
• Operate in a relatively eye-safe wavelength range
|
Table 1. Optical and Spectral Properties |
|
|
Laser Transition |
4I3/2→4I11/2 |
|
Laser Wavelength |
2940 nm |
|
Photon Energy |
6.75 × 10-20 J @2.940 µm |
|
Emission Cross Section |
3 × 10-20 cm2 |
|
Refractive Index |
1.79 @2.940 µm |
|
Pump Bands |
600~800 nm |
|
Table 2. Specifications |
|
|
Dopant Concentration |
Er: ~50 at.% |
|
Rod Sizes |
Diameter: 3~6 mm, Length: 50~120 mm; Upon request of customer |
|
Dimensional Tolerances |
Diameter: ±0.1mm Length: ±0.5 mm |
|
Surface Quality (Scratch/Dig) |
10/5 to MIL-PRF-13830B |
|
Wavefront Distortion |
λ/8 @633 nm |
|
Flatness |
λ/8 @633 nm |
|
Parallelism |
≦30 arc sec |
|
Perpendicularity |
≦15 arc min |
|
Chamfer |
≦0.2 mm×45° |
|
Extinction Ratio |
≧25 dB |
|
AR Coating Reflectivity |
≦0.2% @2940 nm |
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