SPECIFICATIONS

Concentration

Ho:0.3%~0.4at%,Cr:0.3%~1.2%,Tm:5%~6%

Crystal orientation

<111>±5°

Dimensions

Diameter:3mm-6mm,Length:50-120mm(Customized  available)

Dimension Tolerance

Φ:+0/0.04mm,L:+0.5/-0mm

Perpendicularity

≤5′

Parallelism

≤10”

Chamfer

0.15±0.05mm

Surface Quality

10/5(MIL-PRF-13830B)

Barrel

Fine Ground, Polishing, Grooving

Flatness

≤λ/10@623.8nm

Wavefront Distortion

≤0.125λ/25mm@1064nm

Extinction Ratio

≥25dB

Anti-reflection Coating

R≤0.25%@2094nm

Damage Threshold

≥1GW/cm2@1064nm,10ns,10Hz

OPTICAL  PROPERTIES

Laser Transition

5I7 →5I8

Wavelength

2.094um

Emission Line-width

4nm

Emission Cross Section

7×10-525px2

Fluorescence Lifetime

8.5ms

Pump Absorption Bandwidth

781nm

Main Pump Wavelength Range

400~800nm

PHYSICAL  AND CHEMICAL PROPERTIES

Crystal Structure

Cubic Crystal

Melting Point

1970°C  

Density

4.56±0.04g/cm3

Mohs Hardness

8.5

Poisson’s Ratio

0.3

Tensile Strength

0.13~0.26GPa

Thermal Optical Coefficient

7.3×10-6/K

Refractive Index

1.80@2094nm