LASER CRYSTALS
Neodymium doped yttrium aluminum garnet(Nd:YAG)
Nd: YAG is the first and most famous laser crystal. Since many advantages of Nd: YAG have been found, it has been widely used as a near infrared solid-state laser and its frequency multiplier, frequency tripler and high-order frequency multiplier
CASTON'S Nd:YAG featured:
● High gain
● Low threshold
● High efficiency
● Loss as low as 1.06 μM
● Excellent thermal conductivity and thermal shock resistance
● High mechanical strength
● High light transmittance
CASTON'S Nd:YAG applied to:
● The application of Nd: YAG is similar to that of Nd: VO4. It is mainly used to manufacture laser diode pump of low and medium power laser. Because of its excellent performance, it is used in various fields
Structure and physical properties:
crystal structure | Cubic |
cell parameters | a=b=c=12.01nm |
melting point | 1725°C |
mohs hardness | 8.5 |
density | 4.5/cm3 |
reflex index | 1.82 |
radiation lifetime | 550μs |
loss coefficient | 0.003cm-1@1064nm |
linewidth | 0.6nm |
Coefficient of thermal expansion | a=7.8x10-6/K |
Thermo optic coefficient | dn/dT=7.3x10-6/K |
CASTON Standard Specification:
Nd concentration | 0.3 to 2% |
Wavefront distortion | <1/8 λ |
Diameter tolerance | +0.05mm/-0.05mm |
Length tolerance | +0.5mm/-0.5mm |
Chamfer | 0.1mm@45° |
Flatness | <1/10 λ at 633mm |
Parallelism | <10arc second |
verticality | <5 are min |
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