Nd:YAP Crystals

  • Chemical Formula: YAlO3:Nd3+
  • Crystal structure: D162h
  • Lattice Constant: a=5,176, b=5,307, c=7,355
  • Refractive Index: na=1,929, nb=1,943, nc=1,952
  • dn/dT: na:9,7x10-6 K-1  nc:14,5x10-6 K-1
  • Density: 5,35 g/cm3
  • Melting Point: 1870°C
  • Specific Heat: 400 J/(kg K)
  • Thermal Conductivity: 0,11 W/(cm K)
  • Thermal Expansion: 9,5 x 10-6 K-1 (a axis)  4,3 x 10-6 K-1 (b axis)  10,8 x 10-6 K-1 (c axis)
  • Knoop Hardness: 977 (a axis)
  • Product Detail

    Basic properties

    Nd:YAP  AlO3 perovskite (YAP) is a well known host for solid state lasers. The crystal anisotropy of YAP offers numerous advantages.It permits a small tuning of wavelength by varyingthe wave vector direction in the crystal. Furthermore, the output beam is linearly polarised.
    Advantages of Nd:YAP Crystals:
    Comparable threshold and slope efficiency at 1079nm to Nd:YAG at 1064nm
    Higher efficiency at 1340nm compared to Nd:YAG at 1319nm
    Linearly polarized output beam 
    Higher absorption in water and body fluid of 1340nm compared to 1319nm

    Chemical Formula YAlO3:Nd3+
    Crystal structure D162h
    Lattice Constant a=5,176, b=5,307, c=7,355
    Refractive Index na=1,929, nb=1,943, nc=1,952
    dn/dT na:9,7×10-6 K-1
    nc:14,5×10-6 K-1
    Density 5,35 g/cm3
    Melting Point 1870°C
    Specific Heat 400 J/(kg K)
    Thermal Conductivity 0,11 W/(cm K)
    Thermal Expansion 9,5 x 10-6 K-1 (a axis)
    4,3 x 10-6 K-1 (b axis)
    10,8 x 10-6 K-1 (c axis)
    Knoop Hardness 977 (a axis)


    Dopant concentration Nd 0.7-0.9 at% for cwand pulse t 1079nm
0.85~0.95 at% for cwat 1340nmOther dopant concentrations are available
upon request.
    Orientation within 5°
    Rod sizes Diameter 2~10mn Length 20~150mm Upon request of customer
    Dimensional tolerances Diameter +0.00/-0.05mm, Length: ± 0.5mm
    Barrel finish Ground and polished
    Parallelism ≤10″
    Perpendicularity ≤5′
    Flatness < λ/10 @632.8nm
    Surface Quality 10-5(MIL-0-13830B)
    Chamfer 0.15±0.05mm
    AR Coating Reflectivity < 0.25% (@W64nm)