Shalom

Specifications

Dopant concentration

Nd: 0.9─1.3 atm %, Ce : Nd=1:10

orientation

<111> crystalline direction within 5ºC

Flatness

<λ/10

Parallism

≤10 arc seconds

Perpendicularity

≤5 arc minutes

Surface Quality

10/5 Scratch / Digper MIL-O-13830A

Optical Quality

Interference fringes ≤ 0. 25 λ /inch
Extinction ration ≥ 30dB

Size

Diameter: 3～8mm, Length: 40～80mm Upon request of customer

Dimensional tolerances

Diameter: +0.000"/-0.05"
Length: ±0.5"
Chamfer:< 0.1 mm @45°

AR-Coating Reflectivity

≤ 0.2% (@1064nm)

Physical and Chemical Properties

Chemical formula

Nd³⁺: Ce³⁺: Y3Al5O12

Crystal Structure

Cubic

Lattice Parameters

12.01A

Melting Point

1970℃

Moh Hardness

8.5

Density

4.56 ± 0.04g/cm³

Specific Heat (0-20)

0.59J/g.cm³

Modulus of Elasticity

310GPa

Young's Modulus

3.17×104Kg/mm²

Poisson Ratio

0.3(est.)

Tensile Strength

0.13~0.26GPa

Thermal Expansion Coefficient

[100]:8.2 × 10^-6/℃

[110]:7.7 × 10^-6/℃

[111]:7.8 × 10^-6/℃

Thermal Conductivity

14W/m/K(@25℃ )

Thermal Optical Coefficient (dn/dT)

7.3×10^-6/℃

Thermal Shock Resistance

790W/m

Laser Properties

Laser Transition

⁴F_3/2 --> ⁴I_11/2

Laser Wavelength

1.064μm

Photon Energy

1.86×10^-19J@1.064μm

Emission Linewidth

4.5A @1.064μm

Emission Cross Section

2.7~8.8×10^-19cm^-2

Fluorescence Lifetime

230μs

Index of Refraction

1.8197@1064nm