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| Matrix properties |
| Crystal dimensions, Length x diameter | 100mmx25mm
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| Syngony | Rhombic |
| Unit sell parameters, Å | a = 4.77
b = 10.28
c = 6.00
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| Refraction indexes | Ng = 1.670
Nm = 1.651
Np = 1.635
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| Density, g/cm3 | 3.217 |
| Moh’s hardness | 7 |
| Axial characteristics | Biaxial |
| Melting point, oC | 1895 |
| Density of energy, J/cm2 | 2 |
| Absorption cross section, cm2 | 1.88x10-18 |
| Thermal expansion coefficient | 9.5x10-6 |
| Thermal conductivity, W/cmoK | 0.08 (300oK) |
| Relaxion time of laser ocsilation, psec | <10 |
| Stimulated emission cross section, cm2 | 1.44x10-19 |
| Spontaneous fluorescence, sec | 2.7x10-6 |
| Optical loss at λ= 1230 nm, cm-1 | 0.005 — 0.06 |
| Absorption coefficient at wavelength of 1064 nm, , cm-1 | 0.7 – 3.0 |
| Tuning range, nm | 1140 – 1345 |
| Lazing wavelength (center), nm | 1235 (pulse mode)
1244 (CW mode)
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| Cr4+ concentration, at% | 0.05 – 0.5 |
| Room-temperature Fluorescence lifetime, secx10-6 | apr. 1.2.7 |
| Gain cross-section, cm2 | apr.1.45x10-19 |
| Laser rod diameter, mm | 4–10 |
| Laser rod length, mm | 5 — 80 |
| End face flatness | λ/10 wave across 80% of aperture |
| Surface roughness | λ/10 |
| Perpendicularity | within 5 arc minutes |
| Parallelism | 15 arc seconds or less |
| Surface finish, Scratch-dig | 10 — 5 |
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Cromium–activated Forsterite single crystals
(Mg2SiO4:Cr4+) turn to be excellent material
for tunable lasers both for pulse and CW
mode. |
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Developted
by - Pixelhead