Nd:YAG Crystals

Nd:YAG (Neodymium Doped Yttrium Aluminum Garnet, Nd:Y₃Al₅O₁₂) has been and continues to be the most mature and most widely used crystals for lasers, no matter solid state or lamp pumped, CW or pulsed. It possesses a combination of properties uniquely favorable for laser operations. Newlight Photonics has developed the state-of-the-art crystal growing technology to enable the availability of large and high quality crystals.

Nd:YAG crystals with diffusion bonded undoped YAG endcaps are also available from Newlight Photonics. Please visit here.

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Model	Name	coating	attr_size	doping	Price	Availability	Action
NYG3050-D10-AR	Nd: YAG crystal, Dia 3 x 50mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 3x50mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG3078-D10-AR	Nd: YAG crystal, Dia 3 x 78mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 3x78mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG3100-D10-AR	Nd:YAG crystal, Dia 3 x 100mm, Nd: 1.0% (atm), AR@1064nm	AR@1064nm	Dia 3x100mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG3120-D10-AR	Nd:YAG crystal, Dia 3 x 120mm, Nd: 1.0% (atm), AR@1064nm	AR@1064nm	Dia 3x120mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG4050-D10-AR	Nd: YAG crystal, Dia 4 x 50mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 4x50mm	1.0% Nd (atm.)	Ask
NYG4120-D10-AR	Nd: YAG crystal, Dia 4 x 120mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 4x120mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG6100-D10-AR	Nd:YAG crystal, Dia 6 x 100mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 6x100mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG6120-D10-AR	Nd:YAG crystal, Dia 6 x 120mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 6x120mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG6165-D10-AR	Nd:YAG crystal, Dia 6 x 165mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 6x165mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG7100-D10-AR	Nd:YAG crystal, Dia 7 x 100mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 7x100mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG7115-D10-AR	Nd:YAG crystal, Dia 7 x 115mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 7x115mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG7185-D10-AR	Nd:YAG crystal, Dia 7 x 185mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 7x185mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG8085-D10-AR	Nd:YAG crystal, Dia 8 x 85mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 8x85mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG8100-D10-AR	Nd:YAG crystal, Dia 8 x 100mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 8x100mm	1.0% Nd (atm.)	Ask	Out Of Stock
NYG8180-D10-AR	Nd:YAG crystal, Dia 8 x 180mm, Nd 1.0% (atm.), AR@1064nm	AR@1064nm	Dia 8x180mm	1.0% Nd (atm.)	Ask	Out Of Stock

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Newlight's Nd:YAG crystal features,

High gain, low threshold, high efficiency

Low loss at 1064 nm, high optical quality

Excellent mechanical and thermal properties

Basic Properties:

Crystal Structure	Cubic
Lattice Constant	12.01 Å
Melting Point	1970 ^oC
Density	4.56 g/cm³
Refractive Index	1.82 @ 1064 nm
Thermal Expansion Coefficient	7.8x10^-6 /K along <111> 8.2x10^-6 /K along <100>
Thermal Conductivity	14 W/m/K, 20 ºC 10.5 W/m/K, 100 ºC
Mohs Hardness	8.5

Optical Properties:

Stimulated Emission Cross Section	2.8x10^-19 cm²
Spontaneous Fluorescence Lifetime	230 µs
Linewidth	0.6 nm@1064 nm
Pump Wavelength ( With Laser Diodes)	807.5 nm
Absorption Bandwidth	1 nm
Polarized Emission	Unpolarized
Thermo-Optic Coefficient (dn/dT)	7.3x10^-6 /K
Thermal Birefringence	High
Loss Coefficient	~ 0.002 cm^-1 @ 1064 nm

Application examples:

Very high power lasers up to KW @ 1064 nm

Blue lasers with the frequency doubling of 946 nm

Compact passively Q-switched Nd:YAG lasers with Cr⁴⁺:YAG

High power green laser from SHG @ 1064 nm

Specifications of Nd:YAG products:

Doping:	0.1% ~ 1.5% (Atomic Pencentage, atm%)
Orientation:	axis along <111> or <100> direction
Wavefront Distortion:	< λ/4 per inch @ 632.8 nm
Extinction Ratio:	> 30 dB
Dimension Tolerances	Diameter +0.0/-0.05 mm , Length ±0.5 mm
Surface Quality:	10/5 Scratch/Dig as per MIL-O-1380A
Parallelism:	< 10 arc seconds
Perpendicularity:	< 3 arc minutes
Clear Aperture:	> 90%
Surface Flatness:	< λ/10 @ 632.8 nm
Chamfer:	< 0.1 mm @ 45o

Standard Anti-Reflection (AR) Coating:

R < 0.20% @ 1064 nm per surface with the damage threshold > 1GW/cm² @ 1064 nm,
10 ns and 10 Hz.

Typical AR coating curve @ 1064 nm: