Nd YAG Crystal

Various options of Nd-doping ratio (0.1%~1.3at%)
Various options of rods or slabs (flat, wedged, Brewster, grooved, etc)
High optical homogeneity
High processing accuracy
High quality coating, high damage threshold
Very competitive price, quick delivery


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Product Details

Nd:YAG (Neodimium Doped Yttrium Aluminum Garnet) has been and continue to be the most widely used laser crystal for solid-state lasers. Good fluorescence lifetime (twice more than that of Nd:YVO4) and thermal conductivity, as well as robust nature, make Nd:YAG crystal very suitable for high-power continuous wave, high-energy Q-switched and single mode operations.

WISOPTIC provides Nd:YAG rods with the following features: different doping levels, high optical homogeneity, high processing accuracy, precise barrel grooving and wedge angle, various end cuts, various dielectric coatings, high damage threshold.

Nd YAG Crystal

WISOPTIC Standard Specifications* - Nd:YAG

Standard Doping Ratio

Nd%=0.1%~1.3at%

Orientation

<111> or <100> or <110>

Orientation Tolerance

+/-0.5°

Dimensions

Diameter: 2~15 mm, Length: 3~220 mm

Dimension Tolerance

Diameter (±0.05)×Length (±0.5) mm

Barrel Finish

Ground with 400# grit, or polished

Flatness

< λ/10 @ 632.8 nm

Surface Quality

< 10/5 [S/D]

Parallelism

< 10”

Perpendicularity

≤ 5'

Chamfer

0.15 ± 0.025mm @ 45°

TransmittedWavefront Distortion

< λ/10 @ 632.8 nm

Clear Aperture

> 90% central area

Extinction Ratio

> 30 dB

Coating

AR-Coating: R<0.10% @1064nm

Laser Damage Threshold

> 800 MW/cm2 for 1064nm, 10ns, 10Hz (AR-coated)

* Products with special requirement upon request.


Main Features - Nd:YAG

• High gain, low threshold, high efficiency

• Homogeneous distribution of Nd with subtle concentration gradient
• High thermal conductivity, high thermal shock resistance
• High homogeneity, low wavefront distortion
• High optical quality, low single pass loss (especially at 1064nm)
• Various modes of operation (CW, pulsed, Q-switched, mode locked)

 Nd YAG Crystal

Physical Properties - Nd:YAG

Chemical formula

Y3-3xNd3xAl5O12 (x=Nd doping ratio)

Crystal structure

Cubic

Lattice constants

12.01 Å

Density

4.55 g/cm3

Rupture stress

1.3~2.6×103 kg/cm2

Melting point

1970 °C

Mohs hardness

8~8.5

Thermal conductivity

14 W/(m·K) @20°C, 10.5 W/(m·K) @100°C

Thermal expansion coefficients

7.8x10-6 /K @<111>, 7.7x10-6 /K @<110>,   8.2x10-6 /K @<100>

Thermal shock resistance

790 W/m

 

Optical Properties - Nd:YAG


Laser transition

4F3/2 → 4I11/2 @ 1064 nm

Photon energy

1.86×10-19 J

Emission linewidth

4.5Å @ 1064 nm

Stimulated emission cross-section

2.7~8.8x10-19 /cm2 @ Nd%=1.0at%

Loss coefficients

0.003 /cm @ 1064 nm

Fluorescence lifetime

230 µs @ 1064 nm

Refractive index

1.818 @ 1064 nm

Pump wavelength

807.5 nm

Absorption band at pump wavelength

1 nm

Polarized emission

Unpolarized

Thermal birefringence

High

 

WISOPTIC Nd:YAG Coating Curve (@1064nm, R=0.01%)

Nd YAG Coating Curve


Nd:YAG Test Report


Nd:YAG Test ReportNd:YAG Test ReportNd:YAG Test ReportNd:YAG Test ReportNd:YAG Test Report


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