Special Design for Crystals For Shg - Nd:YAG Crystal – WISOPTIC

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Special Design for Crystals For Shg - Nd:YAG Crystal – WISOPTIC Detail:

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.

Contact us for the best solution for your application of Nd:YAG crystals.

WISOPTIC Capabilities – Nd:YAG

• 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

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.

Nd-YAG-1
Nd-YAG-8
Nd-YAG-2

DOWNLOAD Technical Data – Nd-YAG

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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)

Physical Properties – Nd:YAG

Chemical formula	Y_3-3_xNd_3xAl₅O₁₂ (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	7.8×10^-6 /K @<111>, 7.7×10^-6 /K @<110>, 8.2×10^-6 /K @<100>
Thermal shock resistance	790 W/m

Optical Properties – Nd:YAG

Laser transition	⁴F_3/2→ ⁴I_11/2 @ 1064 nm
Photon energy	1.86×10^-19J
Emission linewidth	4.5Å @ 1064 nm
Stimulated emission cross-section	2.7~8.8×10^-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

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