Advantages of LBO:
Broad transparency ranges from 160nm to 2600nm.
High optical homogeneity (dn≈10-6/cm) with little inclusion;
Relatively large effective SHG coefficient (about three times than that of KDP);
High damage threshold;
Wide acceptance angle and small walk-off;
Type I and type II non-critical phase matching (NCPM) in a wide wavelength range;
Spectral NCPM about 1300nm.
High optical homogeneity (dn≈10-6/cm) with little inclusion;
Relatively large effective SHG coefficient (about three times than that of KDP);
High damage threshold;
Wide acceptance angle and small walk-off;
Type I and type II non-critical phase matching (NCPM) in a wide wavelength range;
Spectral NCPM about 1300nm.
Basic properties
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Transparency Range
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160-2600nm
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SHG Phase Matchable Range
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551 ~ 2600nm (Type I) 790-2150nm (Type II)
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Thermal-optic Coefficient
(°C, λ in μm)
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dnx/dT=-9.3X10-6
dny/dT=-13.6X10-6 dnz/dT=(-6.3-2.1λ)X10-6 |
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Absorption Coefficient
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<0.1%/cm at 1064nm <0.3%/cm at 532nm
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Angle Acceptance
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6.54mrad-cm (φ, Type I,1064 SHG)
15.27mrad-cm (q, Type II,1064 SHG) |
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Temperature Acceptance
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4.7°C-cm (Type I, 1064 SHG)
7.5°C-cm (Type II,1064 SHG) |
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Spectral Acceptance
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1.0nm-cm (Type I, 1064 SHG)
1.3nm-cm (Type II,1064 SHG) |
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Walk-off Angle
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0.60° (Type I 1064 SHG)
0.12° (Type II 1064 SHG) |
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NLO Coefficients
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deff(I)=d32cosΦ (Type I in XY plane)
deff(I)=d31cos2θ+d32sin2θ (Type I in XZ plane) deff(II)=d31cosθ (Type II in YZ plane) deff(II)=d31cos2θ+d32sin2θ (Type II in XZ plane) |
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Non-vanished NLO susceptibilities
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d31=1.05 ± 0.09 pm/V
d32= -0.98 ± 0.09 pm/V d33=0.05 ± 0.006 pm/V |
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Sellmeier Equations(λ in μm)
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nx2=2.454140+0.011249/(λ2-0.011350)-0.014591λ2-6.60x10-5λ4
ny2=2.539070+0.012711/(λ2-0.012523)-0.018540λ2+2.0x10-4λ4 nz2=2.586179+0.013099/(λ2-0.011893)-0.017968λ2-2.26x10-4λ4 |
Technical parameters:
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Flatness
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λ/8 @ 633 nm
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Parallelism
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< 20 arc sec
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Perpendicularity
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< 5 arc min
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Angle tolerance
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< 30 arc min
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Aperture tolerance
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± 0.1 mm
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Surface quality
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10/5 scratch & dig per MIL-O-13830A
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Clear aperture
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90% of full aperture
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