OST Photonics CTH: YAG Laser Crystals

Dopant concentration, at.%

0.85 % (Cr)

5.9 % (Tm)

0.36 % (Ho)

Orientation

<100>;<111>

Orientation Tolerence

< 0.5°

Thickness/Diameter Tolerance

±0.05mm

Surface Flatness

<λ/8@632nm

Wavefront Distortion

<λ/4@632nm

Surface Quality

10/5

Parallel

30〞

Perpendicular

15ˊ

Clear Aperture

>90%

Chamfer

<0.2×45°

Lattice Parameters

12.01 Å

Melting Point

1970 ℃

Moh Hardness

8.5

Density

4.56 g/cm3

Specific Heat (0-20)

0.59 J/g.cm3

Modulus of Elasticity

310 GPa

Poisson Ratio

0.3(est.)

Tensile Strength

0.13~0.26 GPa

Thermal Expansion Coefficient

[100]Direction:8.2x10^-6 /C°(0~250℃)
[110]Direction:7.7x10^-6 /C°(0~250℃)
[111]Direction:7.8x10^-6 /C°(0~250℃)

Thermal Conductivity

14 W/m/K(@20℃)
10.5 W/m/K(@100℃)

Thermal Optical Coefficient (dn/dT)

7.3x10^-6 /C°

Thermal Shock Resistance

790 W/m

Solubility

Water: Insoluble;
Common Acids: Slightly

Laser Transition

5_I7-5_I8

Laser Wavelength

2.097 μm

Photon Energy

9.55 x 10^-20 J

Emission Cross Section

7 x 10^-21 cm2

Fluorescence Lifetime

8.5 ms

Index of Refraction

1.80 @2.08 μm

Absorption Linewidth

4 nm

Diode Pump Band

781 nm

Major Pump Bands

400~800nm