bainaben

Laser crystals

Nd:YAG Crystal

Nd:YAG Crystal

 (Neodymium Doped Yttrium Aluminum Garnet)

Nd:YAG 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)

Nd:YAG Crystal
Nd:YAG Crystal

 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
 
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.