Crystals Materials
Barium nitrate Crystals for raman shifter for nanosecond applications
barium-nitrate-crystal
  • Transparency range from 350 nm to 1800 nm
  • Raman frequency shift of 1048 cm-1
  • Surface Quality: 10/5 Scratch/Dig MIL-O-1380A
  • Parallelism: < 10″
  • Perpendicularity: < 5'
  • Clear Aperture: > 90%
  • Surface Flatness: < λ/10 @ 632.8 nm
  • Coating: AR/HR/PR coating upon customer's request
  • Quality Warranty Period: One year
  • Barium nitrate (Ba(NO3)2) is one of the leading crystals among solid-state Raman shifters in terms of Raman gain coefficient, which is known to be the highest at nanosecond steady-state regime (gR = 47 cm/GW@532 nm pump). Barium nitrate also features a moderately broad transparency range (0,33-1,8 μm) and high damage threshold. Drawbacks of barium nitrate crystal are low thermal conductivity (1,17 Wm-1K-1) and high electro-optic coefficient (dn/dT = -20 × 10-6K-1), which lead to the thermal lensing effect. The crystal is soft and hygroscopic, therefore should be treated with caution.

    Specifications of Barium nitrate Crystal
    Orientation [110]
    Clear aperture >90%
    Face dimensions tolerance ±0.5 mm
    Length tolerance ±1 mm
    Parallelism error < 5 arcmin
    Perpendicularity error < 10 arcmin
    Protective chamfers < 0.25 mm at 45˚
    Surface quality 40-20 S-D
    Surface flatness < λ/4 @632.8 nm
    Coatings AR @500-700 nm
    Laser-induced damage threshold >10 J/cm2 @1064 nm, 10 ns
    Mount Unmounted
    Physical and optical properties
    Chemical formula Ba(NO3)2
    Crystal structure Cubic, P213
    Lattice parameters a = b = c = 8.11 Å
    Density 3.25 g/cm3
    Mohs hardness 2.5-3
    Transparency range 0.33-1.8 μm
    Refractive index 1.555 @1064 nm
    Thermal conductivity 1.17 Wm-1K-1 @||c
    Thermal expansion coefficient 13 × 10-6 °C-1
    dn/dT -20 × 10-6 K-1
    Raman frequency shift 1047 cm-1
    Raman linewidth 0.4 cm-1
    Raman gain (ns, steady-state regime) 47 cm/GW @532 nm
    11 cm/GW @1064 nm
    Dephasing time 28 ps

    Stock specification list

    If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
    Part Number Face size Length Orientation Coating
    BN-Cry-001 5.0*5.0 mm 15.0 mm [110] AR/AR@500-700 nm
    BN-Cry-002 8.0*8.0 mm 70.0 mm [110] AR/AR@500-700 nm

    Notes

  • Anti-reflection coatings are available at your specified wavelength.
  • Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
  • To inquiry or order a finished Barium nitrate laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Nd-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.
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