- Solid State Laser
- Semiconductor Laser
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- Fiber Coupled Laser(MM)
- Fiber Coupled Laser(SM)
- Ultrafast laser
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- Q-switched Laser
- Raman Laser
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Co:Spinel
Co:Spinel (Cobalt spinel) – Laser Crystal – Passively Q-switched Crystal – Customized Products
Product ID: 6642
$100
Co:Spinel (Cobalt spinel) – Laser Crystal – Passively Q-switched Crystal – Customized Products
Co:spinel crystal, also known as cobalt spinel, with the chemical formula of Co2+: MgAl2O4. It is a relatively excellent Q-switched crystal product.
Cobalt spinel is a saturable absorber that can be used for passive Q-switching of solid-state lasers in human eyes. Its safe wavelength is 1.5 μm.
Cobalt-doped magnesium aluminate spinel (Co2+: MgAl2O3) can produce short nanosecond pulses at eye-safe wavelength of 1.5 μm.
The peak power near m is very suitable for telemetry applications. The utility model has the advantages of high absorption section, long service life, uniform cobalt distribution, absorption bandwidth, etc.
The absorption spectrum of Co2+ doped MgAl2O4 shows a wide absorption band in the wavelength range of 1200-1600 nm. That indicat Co2+ ions replace tetrahedrally coordinated Mg2+ ions in MgAl2O4 lattice.
Passive Q-switching of solid-state lasers with solid-state saturable absorbers is a very attractive Q-switching technology. Because it allows the development of compact and low-cost nano and sub nanosecond pulsed laser sources.
In industrial applications, due to 1.5 μm laser radiation has high eye safety, so this wavelength has been widely concerned.
Other advantages of this wavelength are the high transparency of atmospheric and fused silica waveguides and the availability of sensitive room temperature photodetectors (Ge and InGaAs photodiodes). This makes 1.5 μm laser is very suitable for rangefinder, environmental sensing, telecommunications, surgery and so on.
The absorption peak of Co:spinel is close to 1520 nm, which is most commonly used for eye safety laser.
Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.
The Features Of Co:spinel Crystal:
Stimulate the long life
High absorption section
Q switch high constant
Wide absorption band
Uniform distribution of cobalt
Rare stimulates the absorption
Physical and Chemical Properties
| Attribute | Numerical |
| Chemical Formula | Co2+:MgAl2O4 |
| Crystal Structure | Cubic |
| Lattice Constant | 8.07Å |
| Density | 3.62 g/cm3 |
| Melting Point | 2105°C |
| Refractive Index | n=1.6948 @1.54 μm |
| Thermal Conductivity/（(W·cm-1·K-1 @ 25°C） | 0.033W |
| Thermal Expansion/（10-6 /°C @ 25°C） | 1.046 |
| Specific Heat/（J·g-1·K-1） | 5.9 |
| Mohs Hardness | 8.2 |
| Extinction Ratio | 25dB |
| Orientation | [100] or [111] < ±0.5° |
| Optical Density | 0.1-0.9 |
| Damage Threshold | >500 MW/cm2 |
| Co2+Doping Concentration | 0.01-0.3 atm% |
Material Specifications
| Attribute | Numerical |
| Concentration | (0.05~0.35) wt% |
| Absorption Coefficient | 0 ～ 7 cm-1 |
| Ground State Absorption Cross SectionGSA（E-19 cm2） | 2.8（±0.4）@1340nm |
| Excited State Absorption Cross Section ESA（E-20 cm2） | 2.0（±0.6）@1340nm |
| Ground State Absorption Cross Section GSA（E-20 cm2） | 3.5（±0.4）@1540nm |
| Excited State Absorption Cross Section ESAA（E-20 cm2） | 1.0（±0.6）@1540nm |
| Working Wavelength | 1200 – 1600 nm |
| Final Configuration | Flat/Flat |
| Quality factor（FOM） | 100~300 |
| Coating | AR/AR@1540，R<0.2%; |
| AR/AR@1340，R<0.2% |
Absorption Emission Spectrum
