BBO Crystal - An Overview
BBO Crystal - An Overview
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Optical parametric oscillation (OPO): We make the most of OPO to determine our things�?nonlinear conversion general performance and section-matching angle for the presented input wavelength and sign/idler wavelengths. We make selected that our things meet up with the requirements for OPO applications.
Though the above method supplies a fantastic general guideline for LIDT values, please Call Tech Guidance In case your wavelength is different from the specified LIDT wavelength. If the electric power density is less than the modified LIDT on the optic, then the optic should do the job for your personal software.
Unfortunately, it could be very hard to match the LIDT specification of an optic in your laser. There are actually numerous regimes through which a pulsed laser can hurt an optic and this relies over the laser's pulse duration. The highlighted columns within the table under outline the applicable pulse lengths for our specified LIDT values.
Indeed, BBO crystals can be tailored to fulfill particular demands. This includes custom dimensions, designs, and coatings. Custom made measurements and designs may be Minimize to fit particular optical techniques, when custom made coatings may be applied to boost the crystal’s overall performance in specific apps.
Substantial-high quality crystals should have less defects and supply superior efficiency, even though a dependable provider will stand behind their items and provide assistance when wanted. Great customer support could also make the purchasing system smoother plus much more satisfying.
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When laser gentle is targeted to your spot, the diameter from the beam midsection would be the focal spot measurement, and the speed at which the light diverges in the beam midsection is associated with the Rayleigh assortment (zR).
g. 20 μm. The group velocity mismatch from the thicker substrate content may well not matter, as being the nonlinear interaction can take place only in The skinny crystal. The substrate only serves to mechanically stabilize the thin nonlinear crystal.
BBO crystals are sensitive and call for watchful dealing with to prevent harm to their surfaces. They need to be managed with clean, lint-absolutely free gloves in order to avoid scratching or contaminating their surfaces. When not in use, BBO crystals should be saved in the awesome, dry location clear of direct sunlight, as extended exposure to heat and light-weight can degrade their optical Houses.
Any scratches can degrade the optical effectiveness from the crystal and possibly induce destruction underneath significant laser power. For stubborn stains, an answer of gentle detergent or isopropyl Liquor can be gently applied to the crystal surface and after that rinsed off with distilled drinking water.
As Formerly mentioned, pulsed lasers typically induce a unique type of harm for the optic than CW lasers. Pulsed lasers generally don't heat the optic enough to damage it; alternatively, pulsed lasers make solid electrical fields capable of inducing dielectric breakdown in click here the fabric.
BBO nonlinear crystal is a negative uniaxial crystal. It offers period matching for many 2nd-order interactions Pretty much around its complete transparency assortment. This transparency ranges from 185 nm to three.3 µm, as inferred from transmittance measurements applying crystal samples of some mm thickness.
Hence, the 2nd harmonic pulse spectrum, revealed on the right, contains a spectral width close to similar to The best case. Preferably, each and every frequency in the elemental pulse spectrum will be at the same time phase matched.
Our crystals are used in an array of programs, together with various styles of nonlinear frequency conversion and electro-optics, but additionally quantum know-how.