Co: Spinel (Cobalt-doped Magnesium Aluminate Spinel) Crystal
Keywords:
Scintillation Crystals
- Product Introduction
- Key advantages
- Application areas
- Product Features
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- Commodity name: Co: Spinel (Cobalt-doped Magnesium Aluminate Spinel) Crystal
Co: Spinel (Cobalt-doped Magnesium Aluminate Spinel) Crystal, with the chemical formula Co²⁺: MgAl₂O₄, is a highly versatile and superior Q-switching crystal.
Product Introduction
Co: Spinel (Cobalt-doped Magnesium Aluminate Spinel) Crystal, with the chemical formula Co²⁺: MgAl₂O₄, is a highly versatile and superior Q-switching crystal. Cobalt spinel serves as a saturable absorber, making it an ideal passive Q-switch for solid-state lasers operating at the eye-safe wavelength of 1.5 μm. When doped with cobalt, magnesium aluminate spinel (Co:spinel) generates short nanosecond pulses with exceptionally high peak power near the eye-safe 1.5-μm wavelength—perfectly suited for remote sensing applications. This material boasts advantages such as a wide absorption range, extended operational lifetime, uniform cobalt distribution, and a broad absorption bandwidth.
Key advantages
- Narrow wavelength range
- Rare excitation absorption
- Q-switch high constant
- High-absorption section
- Long service life
- Cobalt is evenly distributedApplication areas
- Laser technology, optoelectronic devices, materials science
- Passive Q-switch for Er-doped glass lasers at 1.54 μm
- Radar and Ranging
- Medical applicationsProduct Features
Material Properties
Chemical formula
Co²⁺: MgAl₂O₄
Crystal Structure
Cubic
Lattice Constant
8.07 Å
Density
3.62 g/cm³
Mohs Hardness
8.2 Mohs
Extinction Ratio
25 db
Co²⁺ doping Concentration
0.01–0.3 atm%
Thermal Expansion Coefficient
5.9×10⁻⁶/°C @ 25°C
Orientation
[100] or [111] ≤±0.5°
Transparency Range
1200–1600 nm
Thermal Conductivity
0.033 W/(m·K) @25°C
Refractive Index
N=1.6948@1540 nm
Melting Point
2105°C
Product Processing Indicators
Effective Aperture
>90%
Dimensional Tolerance
(W±0.05 mm)×(H±0.05 mm)×(L±0.1 mm)
Chamfer
≤0.2×45°
Surface Quality
20-10 S-D
Flatness
≤λ/8@632.8 nm
Wavefront Distortion
≤λ/4@632.8 nm
Parallelism
<30"
Perpendicularity
≤15′
Chipped Edge
<0.1 mm
Coating
Customized to Customer Specifications
-
- Narrow wavelength range
- Rare excitation absorption
- Q-switch high constant
- High-absorption section
- Long service life
- Cobalt is evenly distributed -
- Laser technology, optoelectronic devices, materials science
- Passive Q-switch for Er-doped glass lasers at 1.54 μm
- Radar and Ranging
- Medical applications -
Material Properties Chemical formula Co2+: MgAl2O4 Lattice structure Cubic crystal system Lattice parameters 8.07 Å Density 3.62g/cm3 Mohs Hardness 8.2Mohs Extinction Ratio 25db
Co²⁺ doping concentration 0.01–0.3 at% Coefficient of thermal expansion 5.9 × 10⁻⁶/°C at 25°C Lattice Orientation [100] or [111] ≤ ±0.5° Spectral range 1200-1600nm Thermal conductivity 0.033 W/(m·K) at 25°C Refractive index N = 1.6948 @ 1540 nm Melting point 2105°C Product Processing Metrics Effective Aperture >90% Dimensional Tolerance (W ± 0.05 mm) × (H ± 0.05 mm) × (L ± 0.1 mm) Protective Chamfer ≤0.2 × 45° Surface finish 20-10 S-D Flatness ≤λ/8 @ 632.8 nm Wavefront Distortion ≤λ/4 @ 632.8 nm Parallelism <30" Verticality ≤15′ Chipped edge <0.1 mm Coating Customized to customer specifications
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