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| Matrix properties |
| Molecular weight | 126.97 |
| Mean dislocation density, cm2 | 103 |
| Syngony | Rhombic |
| Spatial group | Pnma |
| Unit sell parameters, Å | a = 5.47
b = 9.39
c = 4.42
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| Refraction indexes | Ng = 1.753
Nm = 1.747
Np = 1.744
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| Density, g/cm3 | 3.79 |
| Moh’s hardness | 8.5 |
| Axial characteristics | Biaxial |
| Melting point, oC | 1870 |
| Thermal conductivity, W/cmoK | 0.23 |
| Color | Green (for daylight), Red (for artificial lightening) |
| BeAl2O4:Cr3+
Properties |
| Cr3+ concentration, at% | 0.03 – 0.5 |
| Stimulated emission cross-section at 300K, cm2 | 3.0x10-19 |
| Lifetime, sec | 260x10-6 |
| Absorption loss (λ= 750 nm), cm-1 | 0.001 — 0.003 |
| Operation in pulsed and CW mode at wavelengths, μm | 0.70 – 0.82 |
| BeAl2O4:Cr3+
Laser rods |
| Rods with round cross-sections are manufactured |
| Sizes and processing |
| Diameter tolerance, mm | +/— 0.1 |
| Length tolerance, mm | +/— 0.5 |
| End faces are unparallel | 10” |
| Surface quality | 10-5 scratch-dig |
| Flatness | λ/10 |
| Orientation tolerance | < 0.5o |
| Rod’s orientation | [001] |
| Diameter, mm | 4 – 10 |
| Length, mm | 60 — 120 |
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Having emerged in the field of laser manufacturing just recently, Alexandrite
became the leader among other tunable solid–state materials straight away
because of the unique advantages exhibited by alexandrite lasers. Especially
wide application of such lasers is found in medicine for
photodynamic cancer therapy, blood purification in acquired immunodeficiency
syndrome (AIDS) treatment, coverlet and hypodermic tissues, gall–stones and
gravel destruction in gall–bladder and kidney, hair epilation.
“SOLIX” puts on the market Alexandrite crystals and elements both for lasers
with diode and lamp pumping. |
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Developted
by - Pixelhead