Double Side Polished Co2+:MgAl2O4 Single Crystal Substrate
Nanocrystalline Co2+-doped magnesium aluminate spinel (MgAl2O4) has been synthesized for the first time from aqueous solution of metal nitrates containing citric acid as chelating agent by a sol-gel method. The gel was heat-treated at temperatures ranging from 710°C to 1000°C. The heated powder samples were characterized by X-ray diffraction analysis (XRD), transmission electron microscope (TEM), infrared (IR) and absorption spectroscopy. The results showed that the homogeneous nanocrystalline Co2+: MgAl2O4 could be obtained at the low temperature of 710°C. The optimal temperature is about 900°C and the average size of the powder grains is 50 nm or so. In the absorption spectrum, a broad absorption band from 1200 nm to 1600 nm was found, which indicated the existence of Co2+ in the tetrahedral sites because of the 4A2(4F) → 4T(4F) transition of Co2+.
● Suitable for 1.54μm eye-safe lasers
● High absorption section and no excited state absorption
Co2+:MgAl2O4 Single Crystal Substrate Main Properties:
| Specifications |
| Material |
Co2+:MgAl2O4 |
| Orentation |
<111>+/-0.5° |
| Doping rate of Co2+ |
0.05-0.3 atm% |
| Optical density |
0.1-0.9 |
| Absorption coefficient |
1.0cm-1-7cm-1 |
| Transmittance |
30%-99% |
| Absorption section |
3.5 x 10-19cm2 |
| Thickness/Diameter tolerance |
+/-0.1mm |
| Parallelism |
10″ |
| Perpendicular |
5′ |
| Surface quality |
10/5 |
| Wavefront distortion |
Lambda/8 @ 632nm |
| Flatness |
Lambda/8 @ 632nm |
| Aperture |
>90% |
| Chamfer |
0.1 x 45° |
| HR Coating |
<=0.2%(@ 1533nm) |
| Damage threshold |
>500MW/cm2 |
Co2+:MgAl2O4 Single Crystal Substrate Brief Introduction:
- Co2+:MgAl2O4 (Co2+:Spinel or Co:MALO) crystals is a new material for passive Q-switching in lasers emitting from 1.2 to 1.6 µm, in particular, for eye-safe 1.54 µm Er:glass laser, but also works at 1.44 µm and 1.34 µm wavelengths.
- High absorption cross section (3.5 × 10-19cm2) permits Q-switching of Er:glass laser without intracavity focusing both with flash-lamp and diode-laser pumping.
- Negligible excited-state absorption results in high contrast of Q-switch, i.e. the ratio of initial (small signal) to saturated absorption is higher than 10.
- We offer the high quality Co:Spinel crystals materials with high optical quality and uniform distribution of Co2+ in laser grade polishing and coatings.
Co2+:MgAl2O4 Feature:
- Suitable for 1540 nm eye-safe lasers
- High absorption section
- Negligible excited state absorptio
- High optical quality
- Uniformly distributed Co
About US
Crystro has perfect automatic production equipment, the current products are mainly concentrated in the YAG, TGG, TSAG,GGG, LGS, Ce:GAGG , Ce:YAG andCe: LuYAG production. the application of advanced process technology of manufacturing, reducing energy consumption to ensure sustainable development field of research and development.
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1.54μM Eye Safe Lasers Photonics Switching Magnesium Spinel MgAl2O4 Images
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