BBO

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BBO

Physical Properties

  • Crystal Structure trigonal, space group R3c
  • Cell Parameters a = b = 12.532Ä, c = 12.717Ä, Z = 6
  • Melting Point 1095 +/-5°C
  • Transition Temperature 925 +/-5°C
  • Optical Homogeneity Dn ≈10-6/cm
  • Hardness 4.5 Mohs
  • Density 3.85 g/cm3
  • Absorption Coefficient < 0.1%/cm (at 1064 nm)
  • Hygroscopic Susceptibility low
  • Resistivity > 1011 ohm-cm
  • Relative Dielectric Constant eT11/e0: 6.7, eT33/e0: 8.1
  • Tan d, < 0.001
  • Thermal Expansion Coefficients(in the range of 25°C- 900°C) a, 4 x 10-6/K c, 36 x 10-6/K
  • Thermal Conductivity ^c, 1.2 W/m/K; ||c, 1.6 W/m/K

Chemical Properties

  • Phase-matchable SHG range 189-1750nm
  • NLO coefficients d11 = 5.8 x d36(KDP)
  • d11 = 0.05 x d11, d22< 0.05 x d11
  • Electro-Optic Coefficients g11 = 2.7 pm/V, g22, g31< 0.1 g11
  • Half-Wave Voltage 48 KV (at 1064 nm)
  • Damage Threshold 5 GW/cm2 (10 ns)
    • at 1.064 mm 10 GW/cm2 (1.3 ns)1 GW/cm2 (10 ns);
    • at 0.532 mm 7 GW/cm2 (250 ps)
  • Transparency Range 189 - 3500 nm
  • Refractive Indices
    • at 1.0642 mm ne = 1.5425, no = 1.6551
    • at 0.5321 mm ne = 1.5555, no = 1.6749
    • at 0.2660 mm ne = 1.6146, no = 1.7571
  • Therm-Optic Coefficients
    • dno/dT = - 9.3 x 10-6/°C
    • dne/dT = -16.6 x 10-6/°C