The best angle is dependent upon the sort of nonlinear process, the wavelength, along with the crystal thickness. Other procedures for reaching period-matching in LBO nonlinear crystals consist of temperature tuning and quasi-period matching.
LBO has such great transmittance that it may even be used to generate 266 nanometer gentle, Even though the absorption beneath 300nm is generally as well large for your conversion to become beneficial. In addition, it displays Excellent efficiency for frequency conversion generally speaking.
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Equally have a comparatively low damage threshold, but don't have to be operated at substantial intensities because of their large nonlinearity. They have an inclination for photorefractive outcomes, which might be detrimental for frequency conversion, but are utilized for, e.g., holographic facts storage in Fe-doped LiNbO3 crystals. The tendency for “photorefractive problems�?depends strongly on the material composition; e.g. it can be diminished via MgO doping and by utilizing a stoichiometric composition.
Optical parametric oscillation (OPO) is usually a nonlinear process that involves the conversion of a large-Vitality photon into two decrease-Strength photons within a resonant cavity. LBO nonlinear crystals Possess a higher nonlinear coefficient, that makes them perfect for effective OPO.
X-ray diffraction is a strong procedure for analyzing the crystal construction and orientation of LBO nonlinear crystals.
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If the crystal surfaces remain “filthy�?following the above cleansing processes, the surfaces might need been weakened. Please Get in touch with us for rework with the crystals.
Nonlinear Crystals of either β-barium borate (BBO) or lithium triborate (LBO) are utilized for frequency conversion of laser sources. BBO crystals feature thicknesses from 0.2mm to 0.5mm to minimize group velocity mismatch and are ideal for frequency doubling or tripling of Ti:Sapphire and Yb:doped laser pulses. The essential and noncritical period matching LBO crystals are ideal for next or 3rd harmonic technology of Nd:YAG and Yb:doped lasers.
LBO is phase matchable for that SHG and THG of Nd:YAG and Nd:YLF lasers, making use of possibly type I or variety II conversation. For the SHG at home temperature, sort I section matching might be reached and it has the maximum productive SHG coefficient within the principal XY and XZ planes in a broad wavelength range from 551 nm to about 3000 nm.
PL read more spectroscopy is a powerful technique for characterizing the luminescent Houses of LBO nonlinear crystals. PL spectroscopy includes shining a laser beam on to the crystal and measuring the emitted light-weight at diverse wavelengths.
SHG measurement may also be utilized to find out the crystal high-quality and defects, for instance domain structure and non-uniformity.
Crystal expansion is a vital step from the creation of large-quality LBO nonlinear crystals. The selection of crystal development system can substantially impact the crystal top quality, defect density, and optical Attributes on the resulting crystal.