Co: Spinel Description
Co: Spinel allows the generation of short nanosecond pulses with peak power near an eye-safe wavelength of 1.5um, making it ideal for telemetry applications. Co2+ doped MgAl2O4 has a wide absorption spectrum in the wavelength range of 1200 ~ 1600nm, indicating that Co2+ ions replace the tetrahedral coordination of Mg2+ ions in the lattice of MgAl2O4. Passive Q-switching of solid-state saturable absorber lasers is a very attractive q-switching technology because it can lead to the development of compact, low-cost nanosecond and nanosecond pulsed laser sources with a wide range of applications.
Co: Spinel Specifications
Physical and Chemical Properties
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The crystal structure
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cubic
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The lattice parameters
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8.07Å
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Density
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3.62 g/cm3
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Melting point
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2105°C
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Refractive index
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n=1.6948 @1.54 μm
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Thermal conductivity/((W·cm-1·K-1 @ 25°C)
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0.033W
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Thermal expansion/(10-6 /°C @ 25°C)
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1.046
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Specific heat/(J·g-1·K-1)
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5.9
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Hardness (Mohs)
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8.2
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Extinction ratio
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25dB
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orientation
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[100] or [111] < ±0.5°
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Optical density
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0.1-0.9
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Damage threshold
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>500 MW/cm2
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Co2 + doping concentration
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0.01-0.3 atm%
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Material specification
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Concentration
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(0.05~0.35) wt%
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Absorption coefficient
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0 ～ 7 cm-1
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Ground state absorption cross section GSA (E-19 cm2)
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2.8(±0.4) @1340nm
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Excited state absorption cross section ESA (E-20 cm2)
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2.0(±0.6) @1340nm
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Ground state absorption cross section GSA (E-20 cm2)
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3.5(±0.4) @1540nm
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Excited state absorption cross section ESA (E-20 cm2)
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1.0(±0.6) @1540nm
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Working wavelength
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1200 – 1600 nm
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The final configuration
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Flat/Flat
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Quality Factor (FOM)
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100~300
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Coating
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AR/AR@1540, R<0.2%;
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AR/AR@1340, R<0.2%
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Absorption Spectrum
Co:Spinel Applications
- Radar and Ranging: 1535 nm laser
- Medical applications: 1500 nm laser
Co:Spinel Packaging
Our Co:Spinel is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
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