LBO
Feature and advantage:
- Wide range of transparency (160-2600 nm)
- Relatively high SHG efficiency
- 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 near 1300 nm
PRODUCT
Detail
Lithium triborate (LBO) crystal is an excellent nonlinear optical crystal belonging to the orthorhombic crystal system. It is currently one of the most widely used frequency doubling devices. It features good optical homogeneity within the crystal, a relatively wide transmission band, high matching efficiency and high laser damage threshold. It can be used for frequency doubling and tripling of lasers such as Nd:YAG and Ti:Sapphire to generate green and ultraviolet wavelengths, such as frequency doubling of Nd:YAG lasers for medical and industrial applications, frequency doubling of high-power Nd:YAG and Nd:YLF lasers for scientific research and military purposes, and frequency doubling and tripling of Nd:YAP lasers. It performs well in optical parametric oscillators (OPO) and optical parametric amplifiers (OPA), capable of generating tunable laser outputs, and is widely applied in laser technology, spectroscopy, optical communication and other fields.
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LBO Properties
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Crystal Structure
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Orthorhombic, Space group Pna21, Point group mm2
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Lattice Constants
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a=8.4473Å, b=7.3788Å , c=5.1395Å , Z=2
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Melting Point
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About 834°C
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Mohs Hardness
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6
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Desity
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2.47 g/cm3
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Thermal Conductivity
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3.5W/m/K
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Thermal Expansion Coefficients
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αx=10.8x10-5/K, aαy= -8.8x10-5/K, aαz=3.4x10-5/K
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Spectral Range
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160-2600nm
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Absorption Coefficient
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<0.1%/cm at 1064nm
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<0.3%/cm at 532nm
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Nonlinear Coefficient
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deff(I)=d32cosf (Type I in XY plane)
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deff(I)=d31cos2q+d32sin2q (Type I in XZ plane)
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deff(II)=d31cosq (Type II in YZ plane)
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deff(II)=d31cos2q+d32sin2q (Type II in XZ plane)
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Dispersion equations
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n2x =2.454140+0.011249/(λ2 -0.011350)-0.014591λ2 -6.60´10-5 λ2 ( l in mm, T=20 oC)
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n2y =2.539070+0.012711/(λ2 -0.012523)-0.018540λ2+2.00´10-4 λ2 ( l in mm, T=20 oC)
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n2z =2.586179+0.013099/(λ2 -0.011893)-0.017968λ2-2.26´10-4 λ2 ( l in mm, T=20 oC)
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Standard Specifications
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Surface quality
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20-10
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Parallelism
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20″
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Perpendicularity
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5′
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Flatness
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≤λ/10 @ 633 nm
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Wavefront distortion
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≤λ/4 @ 633 nm
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Clear aperture
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0.95
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Bevel
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≤0.15 mm×45°
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Coating
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Upon request
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