The calculation above assumes a uniform beam depth profile. You must now consider hotspots within the beam or other non-uniform depth profiles and approximately work out a most ability density.
Beta Barium Borate (BBO) crystals happen to be a topic of fascination in the sector of optics and photonics because of their unique Houses. In this post, we goal to reply 10 typical questions on BBO crystals, furnishing an extensive understanding of this interesting materials.
There are 2 velocities that define the propagation of sunshine in optical media: the stage and group velocities. The stage velocity may be the pace in the copyright, the oscillation of the electric subject, and also the velocity that is certainly matched in between the basic and second harmonic frequencies for period matching. The section velocity relative into the velocity of light inside a vacuum is outlined with the index of refraction.
Even so, to completely use the prospective of BBO crystals, it can be critical to know their Attributes and how to deal with and shop them properly. These crystals have to have careful handling to forestall damage to their surfaces and will be saved in a dry, great position to take care of their optical efficiency.
Last of all, the huge-angle tunability of BBOs facilitates customization like never in advance of. Dependant upon the specific needs of an software, the crystal can be modified with precision, guaranteeing the output is usually optimized.
Now Evaluate the maximum electricity density to that that is specified because the LIDT to the optic. In the event the optic was tested at a wavelength aside from your functioning wavelength, the injury threshold must be scaled correctly.
Delving further into your prowess of BBO crystals, it’s evident which they characterize the forefront of recent photonics. Their broad transparency assortment not simply bestows them with flexibility but additionally makes sure that they are compatible with numerous light sources.
Having said that, when BBO crystals can run at room temperature, Excessive temperatures should nevertheless be prevented as they are able to have an impact on the crystal’s phase-matching situations and most likely induce destruction.
As an example, look at a basic pulse propagating around a provided crystal thickness. When the temporal stroll-off is bigger as opposed to period of the fundamental pulse, this pulse will also have a spectral bandwidth that drastically exceeds the spectral width of your reference pulse. A general rule for restricting the harmful effects connected with both equally Actual physical effects is to choose a crystal thickness that limitations the fundamental and next harmonic temporal walk-off to not more than the duration of the fundamental pulse.
Hello, I had been wanting to know if It can be doable for yourself read more to generate a BBO crystal having a custom made coating at 532nm fundamental and 266nm next harmonic era. Very best, Ben
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Subsequent, the facility/Strength is either amplified or lessened along with the optic is uncovered at 10 new places. This method is repeated right until destruction is noticed. The hurt threshold is then assigned being the very best power/Power which the optic can withstand without resulting in injury. A histogram which include that below signifies the screening of 1 BB1-E02 mirror.
When laser light-weight is concentrated to the location, the diameter with the beam midsection could be the focal location sizing, and the speed at which The sunshine diverges with the beam waist is related to the Rayleigh range (zR).
Generation of deep ultraviolet radiation at 210 nm by Kind-I third harmonic generation is realized in a very pair of BBO crystals with conversion efficiency as large as 36%.