T-NLC09 - Ø1" Mounted β-BBO Crystal, 75 μm Thick, θ = 29.2°, 700 - 1200 nm Fund., 350 - 600 nm SHG

• Ultrathin BBO Crystals Optically Contacted to Fused Silica Substrate
• Mounted Crystal with Antireflection (AR) Coating for 650 - 1300 nm
• β-BBO (beta-BaB₂O₄) Crystals Optimized for Type-I Second Harmonic Generation (SHG)
• Four Wavelength Range Options:
  
  • 680 - 900 nm (Fundamental) & 340 - 450 nm (SHG)
  • Ultrathin 700 - 1200 nm (Fundamental) & 350 - 600 nm (SHG)
  • 900 - 1300 nm (Fundamental) & 450 - 650 nm (SHG)
  • 1300 - 1700 nm (Fundamental) & 650 - 850 nm (SHG)
• Phase Matching Conditions Specified at or Near Normal Angle of Incidence
• Markings on Housing Indicate Rotation Axis and Polarization Orientation
• Options Include Crystals Optimized for Ti:Sapphire, Erbium (Er), and Ytterbium (Yb) Lasers
• Designed for Use with Femtosecond Laser Pulses
• Room Temperature Operation
• Crystal Thickness 75 μm
• Crystal Thickness Tolerance  +0 μm / -11 μm
• Angle of Optic Axis (θ) 29.2°
• Turning Angle vs. Wavelength
• Optic Axis Angle (θ)  Tolerance ±0.5°
• Fundamental Wavelength (1ω) AOI = 0°  800 nm
• Fundamental Wavelength (1ω) AOI Tuned  700 - 1200 nm
• SHG Wavelength (2ω) AOI = 0° 400 nm
• SHG Wavelength (2ω) AOI Tuned 350 - 600 nm
• Minimum Recommended Focal Spot Size (1/e² Diameter) 12 µm
• Circularity vs. Fundamental Mode Field Diameter (MFD) 
• Minimum Recommended Pulse Duration (FWHM) 14 fs
• Minimum Fundamental Pulse Duration vs. Fundamental Wavelength
• Phase Matching Bandwidth (FWHM) 65 nm
• Phase Matching Bandwidth vs. Fundamental Wavelength
• Aperture Ø5.0 mm
• Clear Aperture >80% of Diameter
• Mount Diameter 1" (25.4 mm)
• AR Coating Range 650 - 1300 nm
• Reflectance Over Coating Range (Avg.) <1.25% at 0° AOI, Single-Layer AR Coating on One Face Only
• AR Coating Curve 
• Substrate UV Fused Silica: Thickness = 2.5 mm,
  Wedge Angle = 30 arcmin
• Laser Induced Damage Threshold 0.8 J/cm² (800 nm, 100 fs FWHM, S-Pol, 10⁴ Pulses)
• Surface Quality 20-10 Scratch-Dig
• Transmitted Wavefront Error  λ/3 @ 632.8 nm Over Clear Aperture

Physical and Optical Properties
Material		β-BBO (beta-BaB2O4)
Crystal Structure		Trigonal, Space Group R3c
Transparency Range		189 - 3500 nm
Second-Order Nonlinear Coefficients		d21 = 2.2 pm/V d31 = 0.08 pm/V d22 = 2.2 pm/V
Nonlinear Refractive Index (Kerr Index)		4.9 x 10−20 m2/W @ 1032 nm
Sellmeier Coefficients	Ordinary Ray
	Extraordinary Ray
Thermal Conductivity		1.2 W / m ⋅ K (⊥ C) 1.6 W / m ⋅ K (|| C)
Mohs Hardness		4.5 Mohs
Density		3.85 g/cm3