Beta-barium-borate (BBO) is a nonlinear optical (NLO) crystal with a unique set of features: a large nonlinear coefficient for ultraviolet (UV) applications, a high damage threshold (LIDT), broad phase matching, low group delay dispersion (GDD) for ultrafast applications, and a wide transparency range.
BBO crystals are among the best electro-optical (E-O) and top-tier nonlinear optical (NLO) crystals. They are widely used for 2nd to 5th harmonic generation in many popular lasers and optical parametric oscillators (OPOs), especially (but not limited to) Ti: Sapphire, Yb: KGW/KYW laser systems, Pockels cells and other applications.
Material: BBO
Type I,
Theta = 28.9 deg, phi = 90 deg.
Two such crystals sandwiched together with their optics axes mutually perpendicular to generate polarization-entangled photons
Dimensions: 5x5 mm
Thickness: 1.0+1.0 mm
Thickness tolerance: ±0.05 mm
Surface quality: 20-10 S-D
WFD: L/6
S1/S2: AR(R<0.5%) @ 405+810 nm, AOI = 0 deg. CA: >d4 mm
Mounted in a dia12.7(+0/-0.25) mm aluminum ring holder
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