NdYAG

Nd:YAG Crystals

Nd:YAG is based on Yttrium Aluminum Garnet Crystal doped with appropriate amount of trivalent rare element Neodymium Ions (Nd3+), which is used to replace Yttrium Ions in YAG. The color of the Nd:YAG crystal is lavender. It is a laser material with the best comprehensive performance.

Key Wavelength: 808nm / 1064nm

  • High gain
  • Low threshold
  • Low loss at 1.06um & High efficiency
  • Mechanical strength & High optical quality
  • Material characteristics that allow for various modes of operation (CW, pulsed, Q-switched, mode locked)

Nd:YAG Overview

Nd:YAG(Neodymium-doped Yttrium Aluminum Garnet) is a widely used laser crystals which applying in the fields of industrial medical, military and scientific.

Advantages:

  • High efficiency
  • Low threshold
  • High gain
  • Low loss
  • Good thermal conductivity and mechanical properties
  • Works well with CW, Q -Switch ,mode locked , frequency doubling lasers

wdt_ID Attributes Values
1 Nd dopant 0.4~1.1 at%
2 Orientation <111>±5°
3 dimension Rod, slab and disc
Rod Ø2.0~Ø35mm
Length: up to 180mm
Slab: on request
5 Extinction Ratio Ø1~Ø6.35mm ≥28dB, Ø7- Ø10mm ≥25dB
6 Parallelism ≤10"
7 Perpendicularity ≤5’
8 Flatness <λ/10 @633nm
9 Barrel finishing Ground finish 400# Grit
10 Coating AR/AR @1064nm
AR/AR@1064nm+808nm
HR@1064nm + HT532nm
Or on request
11 Damage Threshold 700MW/cm² 10ns, 1Hz at 1064nm
wdt_ID Attributes Values
1 Emission Line width 4.5Å @ 1064nm
2 Emission Cross Section 2.7-8.8x10⁻¹⁹cm² Nd 1%
3 Refraction Index 1.8197 @ 1064nm
4 Fluorescence lifetime 230μs
5 Photon energy 1.86x10⁻¹⁹J @1064nm
6 Density 4.56 g/cm³
7 Melting Point 1970°C
8 Mohs Hardness 8.5
9 Crystal Structure Cubic
10 Lattice Parameters 12.01Å
11 Specific heat(0-20) 0.59J/g.cm³

wdt_ID Attributes Values
1 Chemical Formula Nd:Y₃Al₅O₁₂
10 Youngs Modulus 3.17x10⁴Kg/mm²
11 Thermal Expansion Coefficient 7.8 x 10⁻⁶/K 0°C~250 °C
12 Thermal Conductivity 14 W/m/K@20 °C 10.5 W/m/K@100 °C
13 Loss Coefficient 0.003 cm⁻¹@1064 nm
14 Thermal Shock Resistance 790W/m
15 Thermal Optical Coefficient(dn/dT) 7.3×10⁻⁶/K
16 Thermal Expansion Coefficient 7.8x10⁻⁶/K 0°C~250 °C
17 Thermal Conductivity 14 W/m/K@20°C 10.5 W/m/K@100°C
18 Solubility Water: Insoluble Common Acids: Slightly

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