About BBO Crystal
About BBO Crystal
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We polish our items employing a good-grained ruby powder or slurry with a Solid iron or copper plate. We apply frequent worry and motion to attain a smooth area region with reduced roughness and higher flatness.
This high-quality-tuning ability means that BBO crystals can cater to the two generic and remarkably specialised desires with equal finesse.
The Electrical power in each waves propagates in Instructions determined by their Poynting vectors. Snell's legislation isn't going to explain the course of Electrical power circulation, however it can be used to calculate the path in the k-vector from the crystal.
As the second harmonic mild propagates, its Electrical power flows in a distinct route than that of the fundamental mild.
For beams with a superior PRF the two the typical and peak powers need to be as compared to the equivalent CW energy. Furthermore, for extremely transparent components, There may be tiny to no fall inside the LIDT with expanding PRF.
The calculation higher than assumes a uniform beam depth profile. You have to now look at hotspots inside the beam or other non-uniform intensity profiles and about work out a highest electric power density.
The 2nd harmonic frequency wave is produced as a rare wave, which happens to be polarized orthogonal to the elemental-frequency normal wave.
In addition to their use in laser frequency conversion, BBO crystals have discovered apps in electro-optic modulation and quantum optics experiments.
This calculation assumes a uniform beam depth profile. You need to now adjust this Electrical power density to account for hotspots or other nonuniform depth profiles and approximately compute a optimum energy density. For reference a Gaussian beam generally contains a most energy density that is certainly two times that in the 1/e2 beam.
GWU-Lasertechnik offers all normal nonlinear crystals like LBO, BBO and KTP by using a broad a number of specs. Beside the well-proven products, ground breaking crystals like CLBO or BiBO with excellent Homes for e. g. deep-UV generation or superior-ability ultrashort pulse lasers can be found. It doesn't matter if particular person items for R & D purposes are expected or cost-efficient quantities in small, medium or huge batches with in-time supply with the manufacturing line are desired: GWU’s devoted support helps you to discover the finest Main factors on your software.
The four lessen figures illustrate the group velocity hold off (temporal wander-off) boosts given that BBO Crystal the pulses propagate by the fabric. The temporal stroll-off is illustrated for distances Z0 via Z3, which happen to be indicated about the diagram at top.
The spectrally narrowed SHG pulse spectrum is alleged to be apodized, because an influence of the fundamental pulse exceeding the utmost enter bandwidth Restrict would be the removal of the highest and most affordable frequencies from your SHG pulse spectrum.
With appropriate care and managing, BBO crystals can past for quite some time. Nevertheless, their lifespan could be shortened by variables like large temperature, humidity, and physical harm. BBO crystals are sturdy and sturdy, but Like every optical element, they are able to degrade over time Otherwise properly cared for.
Some manufacturers' SHG crystals, together with Thorlabs', present around-period-matched conditions for Usually incident enter gentle for any specified basic frequency. These makers polish the faces in the SHG crystals this kind of which the angle in between the Commonly incident light-weight along with the optic axis would be the period-matched angle for the specified frequency.