Main Specifications

Dopant concentration

Nd:1.1～1.4at%,Ce:0.05～0.1at%

Orientation

[111] within 3°

Wavefront distortion 

≤ 0.2λ/inch

Extinction Ratio

≥28 dB

Rod Sizes

Diameter:3～10mm,Length:1～160mm 
Upon request of customer

Dimensional Tolerances

Diameter+0.000"/-0.002",Length ±02"

Barrel Finish

Ground Finish: 400# Grit

Parallelism

≤10"

Perpendicularity

≤5′

Flatness

λ/10

Surface quality 

10-5(MIL-O-13830A)

Chamfer

0.006"±002" at 45°±5°

AR coating reflectivity 

≤ 0.25% (@1064nm)

Optical and Spectral Properties

Laser Transition

4F3/2--> 4I11/2

Laser Wavelength

1.064μm

Photon Energy

1.86×10-19J@1.064μm

Emission Linewidth

0.45nm@1.064μm

Emission Cross Section (Nd1at%)

2.7~8.8×10-19cm-2

Fluorescence Lifetime (Nd1at%)

230μs

Index of Refraction

1.8197@1064nm

Physical and Optical properties

Crystal Structure

Cubic

Lattice Parameters

1.201nm

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]Direction:8.2×10-6/℃(0~250℃)

[110]Direction:7.7×10-6/℃(0~250℃)

[111]Direction:7.8×10-6/℃(0~250℃)

Thermal Conductivity

14W/m/K(@20℃)

10.5W/m/K(@100℃)

Thermal Optical Coefficient (dn/dT)

7.3×10-6/℃

Thermal Shock Resistance

790W/m

Solubility

Water: Insoluble;
Common Acids: Slightly