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(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)
Optical Parameter of Nd:YAG crystal
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Diameter (mm)
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Standard grade
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Excellence grade
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Superexcellence grade
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φ3-6.35
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≤0.5 fringes/ inch
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≤0.25 fringes/ inch
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≤0.1 fringes/ inch
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≥25dB
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≥28dB
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≥30dB
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φ7-10
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≤0.7 fringes/ inch
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≤0.4 fringes/ inch
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≤0.16 fringes/ inch
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≥22dB
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≥25dB
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≥28dB
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φ11-13
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≤1 fringes/ inch
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≤0.6 fringes/ inch
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≤0.2 fringes/ inch
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≥20dB
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≥23dB
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≥26dB
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φ14-16
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≤1.2 fringes/inch
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≤0.8 fringes/inch
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≤0.25 fringes/inch
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≥18dB
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≥20dB
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≥23dB
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Doping(atm%):
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0.1% ~ 2.5%
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Orientation:
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<111> , <100>,<110> crystalline direction
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Wavefront Distortion:
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λ/10 per inch @ 632.8 nm
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Dimension Tolerances：
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rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm
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Surface Quality:
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10/5 Scratch/Dig MIL-O-1380A
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Parallelism:
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< 10″
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Perpendicularity:
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< 5′
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Clear Aperture:
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> 90%
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Surface Flatness:
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< λ/10 @ 632.8 nm
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Chamfer:
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< 0.1 mm @ 45o
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Barrel Finish:
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50-80 micro-inch (RMS) ,
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Size
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Upon customer request
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Coating
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AR/HR/PR coating upon customer’s request
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Damage Threshold
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750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
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Quality Warranty Period
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One year under proper use
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