5 Simple Techniques For BIBO Crystal
5 Simple Techniques For BIBO Crystal
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Hygroscopic crystal components deteriorate when they are not often saved in sufficiently dry air (or maybe a dry purge gas). This applies e.g. to KDP and BBO, As well as in a lesser extent to LBO. It could be beneficial to help keep this kind of crystal at a fairly elevated temperature, which makes it simpler to hold it dry.
If the crystal surfaces remain “filthy�?following the above cleaning methods, the surfaces may need been ruined. You should contact us for rework in the crystals.
Inspect the crystal surface area for dust and stains by holding it in close proximity to a vivid visible-light-weight source. Viewing at different angles can help see scattering from dust and stains. The crystal floor must be cleaned as explained down below if dust and stains are observed.
The amount of the solvent might be modified for numerous crystal dimension Hence the lens tissue is held damp for the whole drag but there is not any obvious trace of solvent about the crystal surface following the drag is completed. Inspect the surface and repeat if needed, but only use Every sheet of lens tissue at the time.
BIBO crystals can be utilized as significant-performance frequency doubling and frequency summing devices and have broad application prospects in optical parametric oscillation (OPO).
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The selection in the most fitted crystal content for just a offered application is usually significantly from trivial; it should really involve the consideration of many elements. As an example, a higher nonlinearity for frequency conversion of ultrashort pulses isn't going to enable Should the conversation duration is strongly limited by a big group velocity mismatch as well as more info the lower hurt threshold limitations the applicable optical intensities.
Procedure of nonlinear crystals at temperatures below place temperature (to attain section matching) is generally problematic, as it could lead to condensation of h2o over the crystal surfaces In the event the encompassing air is not really extremely dry.
They exhibit excellent homogeneity above huge volumes and also have a higher destruction threshold, but are hygroscopic and also have a small nonlinearity.
Many alternative Attributes of the nonlinear crystal can be important for an application e.g. in nonlinear frequency conversion:
Even well underneath the threshold for fast injury, some crystal materials show a continuous degradation in the utilised quantity, e.
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The magnitude from the productive nonlinear coefficient depends on the nonlinear tensor components and within the utilized stage-matching configuration. A large nonlinearity is vital specially Should the achievable optical intensities are small.
g. in the shape of “gray tracking�? Such phenomena are specially frequent for Procedure with ultraviolet light. Be aware that a gradual degradation might also lead into instantaneous catastrophic problems via extreme heat era.