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laser crystal
optical crystal
Nd:YAG
Advantages of Nd:YAG Crystal: High gain with low lossin 1064 nm band. Good thermal conductivity and thermal shock performance.
Product description
Advantages of Nd:YAG Crystal:
- High gain
- Low laser threshold
- High efficiency
- Low loss in the 1064 nm band
- Good thermal conductivity and thermal shock performance
- High mechanical strength
- High optical quality
- Suitable for a variety of working modes (continuous, pulsed, Q-switched, mode-locked)
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Crystal Structure
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Cubic Crystal System
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Lattice Constant
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12.01 Å
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Density
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4.5 g/cm3
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Melting Point
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1970 ℃
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Refractive Index
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1.82
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Mohs Hardness
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8.5 Mohs
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Coefficient of Thermal Expansion
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7.8×10-6 /K ＜111＞, 0~250 ℃
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Thermal Conductivity
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14 W/m/K, 20 ℃
10.5 W/m/K, 100 ℃
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Stimulated Emission Cross-Section
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2.8×10-19 cm-2
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Relaxation Time
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30 ns
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Fluorescence Lifetime
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550 µs
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Spontaneous Fluorescence
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230 µs
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Spectral Line Width
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0.6 nm
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Loss Coefficient
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0.03 cm-1 @ 1064 nm
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Nd:YAG Specification:
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Doping Concentration
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Nd: 0.3~2.0 (±0.1) at.%
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Size
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From ϕ15×180 mm to maximum φ40 mm×2 mm
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Size Tolerance
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Diameter Tolerance: ±0.1 mm
Length Tolerance: ±0.5 mm
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Surface Finish
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10/5, Refer to MIL-PRF-13830B Standard
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Transmitted Wavefront Distortion
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λ/8 @ 633 nm
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Flatness
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λ/8 @ 633 nm
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Parallelism
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20″
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Perpendicularity
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≤15′
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Chamfer
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≦0.2 mm×45°
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High Reflection Coating
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R＞99.8% @ 1064 nm, R＜5% @ 808 nm
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Other high reflection coatings, such as HR-1064/532 nm, HR-946 nm, HR-1319 nm and coatings for other wavelengths can also be deposited.
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Damage Threshold
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＞500 MW/cm3 @ 1064 nm, 10 ns, 10 Hz (Anti-reflection Coating)
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Diameter (mm)
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Standard Grade
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Excellent Grade
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Optimal 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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We can provide Nd:YAG rods or thick slices with higher specifications, as well as Nd:YAG rods used in 946 nm and 1319 nm lasers, and YAG crystals doped with Er, Yb and other ions.
