Crystals Materials
Cr:GSGG Crystal for laser rangefinders, LIDAR, and LIBS systems applications
Passive Q-switched ruby lasers were achieved with saturable dye absorbers and colored glass (compounds of selenium and cadmium sulfide). Recently the operational characteristics of a dye Q-switch for a pulsed ruby laser was still studied for application in underwater holography. However, the dye Q-switch was limited in durability because of degradation (decomposition) of the dyes and the glass Q-switch was readily damaged. Thus, the tetravalent chromium doped gadolinium scandium gallium garnet Gd3Sc2Ga3O12(Cr4+:GSGG) passive Q-switch ruby laser-offers for the first time high reliability, durability and high efficiency.
| Property | Value |
|---|---|
| Orientation | [100] or [111] < ±0.5° |
| Doping Concentration of Co2+ | 0.01-0.3 atm% |
| Wavefront Distortion | <λ/8 @ 632.8 nm |
| Thickness/Diameter Tolerance | ±0.05 mm |
| Surface Flatness | <λ/10 @ 633 nm |
| Wavefront Distortion | <λ/8 @ 632.8 nm |
| Surface Quality | 10/5 per MIL-O-13830A |
| Parallelism | < 10 arcsec |
| Perpendicularity | 10 arcmin |
| Clear Aperture | > 90% |
| Chamfer | < 0.2 mm @ 45° |
| Coating | AR/AR @ 1540 nm, R < 0.2%; AR/AR @ 1340 nm, R < 0.2% |
| Property | Value |
|---|---|
| Density (g*cm^-3) | 6.495 |
| Heat capacity (J*g^-1*K^-1) | 0.4029 |
| Thermal conductivity (W*m^-1*K^-1) | 6 |
| Thermal expansion (10^-6 K^-1) | 7.5 |
| Poisson’s ratio | 0.28 |
| Young’s modulus (GPa) | 210 |
| Fracture toughness (MPa) | 1.2 |
| Thermal- stress resistance (W*m^-1) | 660 |
| Property | Value |
|---|---|
| Refractive index at 1064 nm | 1.9424 |
| Index change with temperature, dn/dt (10^-6 K^-1) | 10.9 |
| Elasto-optic constants | |
| P11 | -0.012 ± 0.003 |
| P12 | 0.019 ± 0.003 |
| P44 | -0.0665 ± 0.0013 |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished Cr:GSGG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Cr-dopant concentration, sizes, and coating. For special request,
please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Initial Transmission @1064 nm | Coating |
|---|---|---|---|
| Cr-GSGG-001 | 3.0*3.0 mm | T0=80%~95% | AR/AR@1535 nm |
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