Cr,Er:YSGG
In Cr,Er:YSGG crystals, Cr³⁺ replaces Ga³⁺ or Sc³⁺, and Y³⁺ replaces Er³⁺. The crystals offer large size, low optical damage, high optical quality, and a low laser threshold. Laser crystals are commonly pumped by flashlamps or laser diodes. A 970nm laser diode is considered the preferred pump for 2790nm Er,Cr:YSGG lasers because it can directly excite Er³⁺ to the upper laser level with high efficiency and low energy consumption. Various Q-switching methods, including acousto-optic, electro-optic, and FTIR methods, are used to obtain pulsed output. The distinctive laser wavelength supports broad use in medicine, scientific research, materials processing, and military applications.
Specification Snapshot
Crystal Structure
Cubic
Surface Quality
10 – 5 scratch–dig
Laser Wavelength
2.791 µm
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Overview
In Cr,Er:YSGG crystals, Cr³⁺ replaces Ga³⁺ or Sc³⁺, and Y³⁺ replaces Er³⁺. The crystals offer large size, low optical damage, high optical quality, and a low laser threshold. Laser crystals are commonly pumped by flashlamps or laser diodes. A 970nm laser diode is considered the preferred pump for 2790nm Er,Cr:YSGG lasers because it can directly excite Er³⁺ to the upper laser level with high efficiency and low energy consumption. Various Q-switching methods, including acousto-optic, electro-optic, and FTIR methods, are used to obtain pulsed output. The distinctive laser wavelength supports broad use in medicine, scientific research, materials processing, and military applications.
Specifications
| Parameter | Value |
|---|---|
| Crystal Structure | Cubic |
| Chemical formula | Y₂.₉₃Sc₁.₄₃ Ga₃.₆₄O₁₂ |
| Lattice constant | 12.42 Å |
| Concentration | 30 at % (3.7 x 10²¹ cm⁻³, dodecahedral Er³⁺) |
| Concentration | 2 at % (1.7 x 10²⁰ cm⁻³, octahedral Cr³⁺) |
| Surface Quality | 10 – 5 scratch–dig |
| Perpendicularity | 5 ‘ |
| Parallelism | 30〞 |
| Precision grinding | 55 microinches ±5 microinches |
| Chamfer | 45 deg ±5 deg |
| Chamfer | 0.005 ±0.003 in |
| Length Tolerance | +0.040 / -0.000 in |
| Diameter Tolerance | +0.0000 / -0.0020 in |
| Thermal conductivity | 8 W / mK |
| Coefficient of thermal expansion | 8.1×10⁻⁶/K |
| Thermo-optic coefficient dn / dT | 12.3 10⁻⁶/ K |
| Hardness | 8 Mohs |
| Density | 5.67g/cm³ (Cr&Er doped) |
| Dimensions ( Diameter x Length ) | From 3 x 30 to 12.7 x 127.0 |
| Orientation | <001>, <111> |
| Refractive index | 1.92 at 1000nm |
| Fluorescence lifetime | 1400 μs |
| Laser Wavelength | 2.791 µm |
Key Features
Good crystal quality; superior mechanical properties; low pump threshold; high slope efficiency; operation at medium frequency.
Datasheet
Product Datasheet
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Supplier Information
Shanghai Crylink Technology Co., Ltd. was jointly established by Shanghai Yangtze Delta Innovation Institute, Baoshan District state-owned platform, and Dr. Yongjun Dong's team. Located in Baoshan High-tech Industrial Park, the company focuses on R&D and production of laser materials and devices. Main products include laser crystals, nonlinear crystals, bonded crystals, and devices, with full-chain capabilities from crystal growth, optical polishing, laser coating to device packaging. Its subsidiary, Nanjing Guangbao Optoelectronics Technology Co., Ltd., operates the 'Meta-laser' and 'Guangbao Optoelectronics' brands. Products are widely used in laser processing, medical aesthetics, LiDAR, optical communications, defense, scientific research, aerospace, and other fields.
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