Nd: YAG Crystals (Neodymium Doped Yttrium Aluminum Garnet)

Nd:YAG (Neodymium Doped Yttrium Aluminum Garnet) is the earliest and most famous laser host crystal. Combining many advantageous properties, Nd:YAG is ubiquitous in near-infrared solid-state lasers and in their frequency-doublers, triplers, and higher-order multipliers. For example, it is widely used in industrial, medical, military, and scientific fields. YAG laser crystals are essential in all types of solid-state laser systems, including frequency-doubled continuous wave, high-energy Q-switched, and other high-power laser operations. For example, the use of laser diodes in conjunction with Nd crystals enhances the performance and versatility of laser systems, enabling applications in precision cutting, welding, and medical surgeries.

Exceptional Properties for High-Intensity Applications

Nd:YAG crystals are highly valued for their excellent fluorescent lifetime, thermal conductivity, and physical strength, making them suitable for high-power lamp-pumped lasers. These crystals are produced using the Czochralski growth method, ensuring superior crystal quality and performance.

Nd YAG Crystals, nd yag crystal, Nd:YAG Crystals
Nd:YAG Crystal Sample 1
Nd YAG Crystals, nd yag crystal, Nd:YAG Crystals
Nd:YAG Crystal Sample 2

Nd:YAG Crystals: Basic Properties

Chemical Formula

Nd: Y3Al5O12

Crystal Structure


Lattice Constant


Melting Point




Refractive Index


Thermal Expansion Coefficient

7.8×10-6 /K <111>

Thermal Conductivity (w/m/k)


Mohs Hardness


Stimulated Emission Cross-Section

2.8×10-19 cm-2

Relaxation Time of Terminal Lasing Level


Radiative Lifetime

550 us

Spontaneous Fluorescence

230 us



Pump Wavelength


Polarized Emission


Thermal Birefringence


Pump Wavelength Absorption Band


Loss Coefficient

0.003cm-1@1064 nm

Factory Standards Specifications


0.1% ~ 2.5% 


<111> , <100>,<110> crystalline direction 

Wavefront Distortion 

λ/10 per inch @ 632.8 nm 

Dimension Tolerances 

rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm 

Surface Quality

10/5 Scratch/Dig MIL-O-1380A 


< 10″


< 5′ 

Clear Aperture

> 90% 

Surface Flatness

< λ/10 @ 632.8 nm 


< 0.1 mm @ 45o

Barrel Finish

50-80 micro-inch (RMS) ,


Upon customer request


AR/HR/PR coating upon customer’s request

Damage Threshold

750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz

Quality Warranty Period

Two years under proper use

Slabs, thread rod, Er:YAG, Yb:YAG,Cr:YAG, Ce:YAG, Tm:YAG, Ho:YAG and other ion doped YAG crystals are also available upon request.


  • High gain, High efficiency, Low threshold, Low loss at 1.06 µm 
  • Good thermal conductivity and thermal shock characteristics
  • Mechanical strength, High optical quality
  • Various modes of operation (CW, pulsed, Q-switched, mode locked)

High-Quality Nd:YAG Crystal Growth

Avantier specializes in high-quality Nd:YAG crystal growth. By utilizing premium starting materials and employing whole boule interferometry, we guarantee precise measurements of Nd concentration through transmission spectroscopy and fluorescence lifetime assessments. Avantier’s cutting-edge diffusion bonding technology enables the production of various configurations such as Nd:YAG/Cr4+ or other ion-doped YAG-based passively Q-switched setups, including slabs, disks, rod-based, and microchips.

Therefore, Nd:YAG crystals from Avantier are indispensable components for solid-state and diode-pumped laser systems, offering unparalleled robustness and efficiency suitable for high-intensity applications across diverse fields.

Customize your Nd:YAG crystals

Avantier supplies large-diameter  Nd:YAG crystals. The use of high-quality starting materials for crystal growth, whole boule interferometry, and precise measurement of Nd concentration using transmission spectroscopy and fluorescence lifetime measurements assures that each crystal will perform according to customer specifications.

Therefore, lenses can be carefully crafted with the exact angle needed for the highest performance for your particular application. Avantier is a leading company in this field, known for creating high-quality laser optic components and systems for a wide variety of lasers.

We’d be happy to discuss your project!  Contact us to schedule a consultation or request for a quote.


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