Hygroscopic crystal materials deteriorate when they're not constantly saved in adequately dry air (or perhaps a dry purge fuel). This is applicable e.g. to KDP and BBO, and in a lesser extent to LBO. It might be useful to maintain such a crystal in a considerably elevated temperature, that makes it simpler to keep it dry.
Inertness to Dampness: BIBO crystal is inert to dampness, which implies it doesn't degrade or lose its optical Houses when subjected to humidity. This helps make BIBO a far more secure and trustworthy selection for optical applications in different environments.
Inspect the crystal surface for dust and stains by holding it near a vibrant visible-mild supply. Viewing at distinct angles might help see scattering from dust and stains. The crystal surface should be cleaned as explained under if dust and stains are observed.
Commonly, the crystal material should have a substantial optical transparency for all wavelengths included �?such as, for pump, sign and idler within an optical parametric amplifier.
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Operation of nonlinear crystals at temperatures below place temperature (to accomplish period matching) is generally problematic, as it may well lead to condensation of drinking water around the crystal surfaces If your bordering air is not very dry.
In the case of ultrashort pulses the significant group velocity mismatch enforces the use of a shorter crystal, which calls for superior optical intensities for just a presented conversion effectiveness.
Abnormal optical intensities during operation might instantaneously damage a crystal. Regrettably, nonlinear crystals normally must be operated not significantly from their optical harm threshold to achieve a adequately significant conversion effectiveness. This suggests a trade-off among conversion efficiency and crystal life time.
) to blow off dust and also other free contaminants initial. If a dry nitrogen line is available while in the lab, an air gun may also be utilized to blow absent dust particles. Blow from the area Carefully. Will not blow off the crystal alone out of your hand!
China BIBO crystals may be used not merely as high-efficiency frequency doubling and frequency summing products, but even have broad software prospective customers in the sector of optical parametric oscillation (OPO), and In addition, it has an essential application from the effective generation of ultrabright entangled photons as a result of blue pumped Spontaneous Parametric Down Conversions (Also Know as SPDC).
Superior electricity laser method: BIBO crystals are perfect for use in substantial-electricity laser programs due to their high destruction threshold as well as their potential to resist substantial-depth laser beams without injury. This provides BIBO crystals an important advantage in laser purposes that have to have higher Electrical power output.
Since the next harmonic (SHG) is often greatly utilized to produce coherent seen light-weight and ultraviolet radiation, individuals concentrate to it, but the standard nonlinear crystals such as KDP, LBO, here KTP, B-BBO also have quite a few shortcomings. BIBO crystal is a different form of nonlinear crystal. In comparison with KDP crystal, it will make up for your downside that KDP crystal can improve in massive dimension but dissolve in h2o.