About BBO Crystal
About BBO Crystal
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A: Yes, BBO crystals exhibit spectacular thermal security, producing them suited to apps with different temperatures.
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Their superior destruction threshold and outstanding thermal security make them well suited for use in substantial-electrical power laser systems, while their extensive transparency variety makes it possible for them to operate with a wide array of laser wavelengths.
Notice that whether or not the nominal depth is underneath the nominal damage threshold, there might be difficulties resulting from fluctuations while in the beam power or local intensity (e.g., if a beam profile has “incredibly hot spots�?, or due to isolated defects inside of a crystal, which can be more sensitive in comparison to the regular crystal substance.
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BBO crystals have two refractive indices: ne for amazing rays and no for standard rays. The difference between ne and no depends on the wavelength of sunshine plus the crystal’s temperature.
When an optic is broken by a continuous wave (CW) laser, it is often as a result of melting of the surface due to absorbing the laser's Vitality or harm to the optical coating (antireflection) [one]. Pulsed lasers with pulse lengths extended than 1 µs is usually dealt with as CW lasers for LIDT conversations.
Most of our regular crystals come mounted into open ring holders. Be sure to Notice the letter "H" from the solution code which suggests that crystal is equipped mounted.
The spatial wander-off angle depends on the size of the beam and the crystal length. Although the angle is usually considerable, it is usually compact, commonly over the buy of ten mrad, and might be neglected.
Any scratches can degrade the optical effectiveness in the crystal and possibly bring about problems beneath large laser electricity. For stubborn stains, a solution of delicate detergent or isopropyl alcohol can be gently placed on the crystal floor and then rinsed off with distilled drinking water.
As Earlier mentioned, pulsed lasers normally induce another here kind of damage into the optic than CW lasers. Pulsed lasers usually tend not to heat the optic more than enough to wreck it; in its place, pulsed lasers produce sturdy electrical fields able to inducing dielectric breakdown in the material.
In frequency conversion, BBO crystals are utilized to alter the color of laser gentle, enabling the manufacture of a wide range of colors that are not right obtainable from readily available laser resources. In electro-optic modulation, They are really applied to manage the depth, section, polarization, or path of a laser beam.
The 266nm generation refers back to the manufacture of ultraviolet light-weight using a wavelength of 266 nanometers.
Yet another Similarly intriguing software is optical parametric oscillation. During this, BBO permits the conversion of a photon into two photons with different frequencies, the sum of which equals the original photon’s frequency.