The best Side of a-BBO Crystal
The best Side of a-BBO Crystal
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Normal cleansing and appropriate storage can help prolong the lifespan of BBO crystals. It’s also crucial to steer clear of exposing the crystals to disorders outdoors their specified operating variety, as this can cause permanent damage.
Besides their use in laser frequency conversion, BBO crystals have discovered purposes in electro-optic modulation and quantum optics experiments.
A second issue would be that the team velocity mismatch amongst the second harmonic and fundamental-frequency pulses will end in one particular pulse lagging another as the two propagate. This is referred to as temporal walk-off and can manifest even beneath best section-matched circumstances.
As opposed to the reference pulse energy spectrum comprising an apodization filter, in the spatial domain the filter could well be in NA. The angular domain apodization filter on the other hand, is only in a single-dimension described with the airplane k and .
We use Numerical Aperture (NA) to describe the extent of this angular information. Preferably, the fundamental laser light-weight will be collimated throughout the crystal, considering the fact that collimated gentle resembles a gaggle of rays aligned to a similar path with the NA of zero.
Thorlabs expresses LIDT for CW lasers to be a linear power density measured in W/cm. Within this routine, the LIDT offered being a linear power density is often placed on any beam diameter; a person isn't going to should compute an modified LIDT to adjust for adjustments in place sizing, as shown through the graph to the correct. Ordinary linear electric power density can be calculated utilizing the equation underneath.
Though the above method presents a very good general guideline for LIDT values, please Call Tech Guidance In the event your wavelength differs from the desired LIDT wavelength. When your electricity density is under the altered LIDT of the optic, then the optic should really get the job done on your application.
Rather than decompose the SHG polarization into factors Ex and Ez, the light is typically called a unprecedented wave (E'e) by using a refractive index, n'e. Inside the diagram on the proper, n'e, which relies on θ, is indicated from the intersection with the conic segment illustrated because of the crimson ellipse While using the XZ airplane.
Now Assess the utmost Electricity density to that which can be specified as the LIDT to the optic. In the event the optic was tested at a wavelength aside from your operating wavelength, the hurt threshold has to be scaled appropriately [three].
As a result, the 2nd harmonic pulse spectrum, demonstrated on the correct, has a spectral width somewhere around the same as The best case. Preferably, each and every frequency in the elemental pulse spectrum can be simultaneously phase matched.
Thorlabs provides a wide selection of optics optimized for use with femtosecond and picosecond laser pulses. Remember to see underneath To learn more.
Yes, BBO crystals could be custom made Based on distinct requirements. This contains customized measurements, designs, and coatings. Nonetheless, more info customization may possibly affect the crystal’s Homes and general performance, so it should be carried out by an expert. Tailor made dimensions and styles might be Slash from a bigger BBO crystal to suit particular programs.
Their supremacy in this domain is not only by chance, but a results of their intrinsic and meticulously crafted Homes.
This post dives deep into the benefits and exclusive properties of BBO crystal and its paramount significance in economical frequency doubling and harmonics generation at 266nm.