What Does BBO Crystal Mean?
What Does BBO Crystal Mean?
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Optical crystals can exhibit different styles of optical nonlinearities, that may be used in numerous means:
Although the above method supplies a very good rule of thumb for LIDT values, make sure you Get hold of Tech Assist if your wavelength differs from the required LIDT wavelength. If your energy density is below the modified LIDT from the optic, then the optic should get the job done for the application.
The destruction Investigation will probably be performed on an analogous optic (purchaser's optic won't be weakened). Testing may possibly cause more fees or direct instances. Make contact with Tech Assistance To find out more.
Crystal life span can even be strongly dependent on the material high quality, Whilst specific degradation phenomena appear to be intrinsic limitations of the fabric.
The sort-I section matching method depends on matching the ordinary and remarkable indices of refraction for the basic and 2nd-harmonic frequencies, that's reached as a result of specific orientation of your crystal optic axis and enter propagation vector. A targeted laser pulse, or beam, has angular information, formally named spatial frequencies, to supply the smaller focal location.
Even so, to completely make the most of the prospective of BBO crystals, it is actually very important to be familiar with their properties and the way to tackle and keep them properly. These crystals call for watchful dealing with to circumvent damage to their surfaces and should be stored within a dry, cool position to maintain their optical functionality.
A lot of the conventional nonlinear crystals like BBO, LBO, BiBO or KTP for frequency doubling, tripling and quadrupling of the fundamental laser radiation can be obtained from inventory. Purchaser-distinct dimensions and AR coatings may also be available at aggressive price ranges.
Cleansing BBO crystals is a delicate course of action that needs treatment to avoid harmful the crystal’s floor. A soft cloth or lens tissue moistened using get more info a moderate solvent, like isopropyl Alcoholic beverages, may be used to Carefully wipe the surface area of the crystal.
It’s crucial to keep away from using abrasive materials or solid solvents, as these can scratch or otherwise damage the crystal’s area. Regular cleansing may also help manage the crystal’s optical effectiveness and extend its lifespan.
The Electricity density within your beam should be calculated with regards to J/cm2. The graph to the correct exhibits why expressing the LIDT as an Power density provides the very best metric for short pulse resources. In this particular regime, the LIDT given being an Vitality density could be placed on any beam diameter; just one would not really need to compute an modified LIDT to adjust for variations in place size.
Also, the structural and compositional attributes of BBO offer it with amazing thermal steadiness and resistance against environmental problems.
The situation of your green curve is dependent upon θ. In cases like this, the angle θ has actually been tuned to deliver a refractive index for 515 nm light-weight that matches the refractive index for 1030 nm gentle. This tuning angle is hence optimized for Form-I SHG period matching and also a elementary-frequency input beam of 1030 nm.
In the complex tapestry of photonics, the 266nm technology, backed because of the prowess of BBO, emerges as being a thread of paramount importance.
The length of the SHG crystal appreciably impacts the spectral width of your reference pulse, or alternatively the bandwidth in the SHG filter.