Laser Crystals: Nd:YAG

Nd:YAG (Neodymium Doped Yttrium Aluminum Garnet) is the earliest and most famous laser host crystal. Since it combines great advantages in many basic properties, Nd:YAG is the ubiquitous presence for near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multiplier.

Advantages of  Nd:YAG

  • 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)

Optical Parameter of Nd:YAG crystal

Diameter (mm) Standard grade Excellence grade Superexcellence grade
φ3-6.35 ≤0.5 fringes/ inch ≤0.25 fringes/ inch ≤0.1 fringes/ inch
≥25dB ≥28dB ≥30dB
φ7-10 ≤0.7 fringes/ inch ≤0.4 fringes/ inch ≤0.16 fringes/ inch
≥22dB ≥25dB ≥28dB
φ11-13 ≤1 fringes/ inch ≤0.6 fringes/ inch ≤0.2 fringes/ inch
≥20dB ≥23dB ≥26dB
φ14-16 ≤1.2 fringes/inch ≤0.8 fringes/inch ≤0.25 fringes/inch
≥18dB ≥20dB ≥23dB


We offer Nd:YAG specifications

Doping(atm%): 0.1% ~ 2.5%
Orientation:  <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
Parallelism: < 10″
Perpendicularity: < 5′
Clear Aperture: > 90%
Surface Flatness: < λ/10 @ 632.8 nm
Chamfer: < 0.1 mm @ 45o
Barrel Finish: 50-80 micro-inch (RMS) ,
Size Upon customer request
Coating AR/HR/PR coating upon customer’s request
Damage Threshold   750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
Quality Warranty Period    One year 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.

Nd:YAG crystals with diffusion bonded undoped YAG endcaps are also available from us.


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