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| Alexandrite Laser Crystals |
Hangzhou Shalom offers customized Alexandrite laser crystals favorable for 755nm long pulsed, Q-switched or pico second lasers, with high damage threshold, high thermo-optical quality and competitive price. You could also get the complementary 755nm Pockels Cells for your Alexandrite laser in Shalom EO, fast delivery is guaranteed for your requirements.
To check more information about Alexandrite Laser Crystals click here.
Features and applications:
Alexandrite not only endure high temperature, but even achieve higher laser gain and efficiency under elevated temperature . The Alexandrite provided possesses excellent thermo-mechanical and thermo-optical properties. Comparing to Nd:YAG, the thermal shock resistance of Alexandrite is five times higher.
The Alexandrite rod provided by Shalom EO have a high damage threshold that enables the rod to withstand >1.5million pulses.
Hangzhou Shalom offers customized Alexandrite laser crystals favorable for 755nm long pulsed, Q-switched or pico second lasers, you could also get the complementary 755nm Pockels Cells in Shalom EO. This wavelength could be thoroughly absorbed by the hairs as well as melanin, making it favorable for aesthetic laser systems.
In the Case of hair removal, Alexandrite laser is a better choice than diode laser for people with lighter skin, however for people with dark skin tone diode laser might be the only option since Alexandrite laser has a higher potential of causing damage to darker skin.Comparing to Nd:YAG laser, Alexandrite laser is advantageous for poeple with lighter hair, and in terms of tolerability, it is generally found to be less painful than the Nd:YAG.
Tattoos can be removed by applying light which can be absorbed by the used ink, which is then chemically transformed and subsequently removed by the body. Q-switched short pulse Alexandrite laser is favorable for small ink particles.
Typical modules:
Dia5x115mm, Dia7x110mm, Dia7x125mm
Dia6.35x120mm, Dia8x130mm, Dia9.53x117mm
Specifications:
Size Tolerance | Diameter (+0/-0.05 mm) x Length (+1/-0 mm) | ||
Surface Quality | 10/5 S/D | Parallelism | <10” |
Allowed Chips | <0.1mm | Perpendicularity | <5' |
Flatness | λ/10@633nm | Clear Aperture | ≥98% |
Coating Options | 1- Normal : AR@755nm on both ends 2- Mirror coating: HR@755nm(S1) & PR@755nm(S2) | ||
Optional End Forms of Rod | 1- Plano-Plano 2- Convex-Plano | ||
Damage Threshold | > 1.5 Million pulses ( tested by third party) | ||
Material Properties:
Fomula | Cr3+:BeAl2O4 |
Lattice Constants (Angstrom) | 5.476(a) x 9.404(b) x 4.427(c) |
Molecular weight | 127.01 g/mole |
Hardness (Mohs) | 8.5 |
Lasing wavelength | 710 - 800 nm |
Crystal System | Orthorhombic |
Refractive Index (@750 nm) | 1.7367(a) x 1.7241(b) x 1.7346(c) |
Thermal Expansion Coefficient (x 10^-6/K) | 5.9(a), 6.1(b), 6.7(c) |
Vickers Hardness(kg/mm^2) | 2000 |
Melting Point | 1870 °C |
Thermal Conductivity | 0.23 W/cm•K |
Density | 3.7 g/cm^3 |
Young's Modulus (GPa) | 469 |
Thermal Shock Resistance (W/cm) | 35 - 74 |
dn/dT | 8x10^-6/K |
Curves:
1.Absorption Curve of Alexandrite
