A: Certainly, BBO crystals exhibit spectacular thermal steadiness, building them ideal for purposes with varying temperatures.
When the above mentioned course of action supplies a superb general guideline for LIDT values, you should Make contact with Tech Guidance In the event your wavelength differs from the desired LIDT wavelength. In case your power density is lower than the altered LIDT from the optic, then the optic must work for your personal software.
Their substantial hurt threshold and outstanding thermal stability make them well suited for use in large-electrical power laser techniques, even though their extensive transparency variety makes it possible for them to operate that has a broad array of laser wavelengths.
Inside the broad world of nonlinear optical crystals, BBO crystals stand out as pioneers, especially in the realm of 266nm era.
For beams having a high PRF equally the normal and peak powers have to be in comparison with the equivalent CW electric power. Moreover, for remarkably transparent supplies, There may be tiny to no fall in the LIDT with escalating PRF.
Various different section-matching approaches can be used to equalize the refractive indices of the basic and second harmonic light. Just one technique, which takes advantage of linearly polarized light plus the distinction between the common and amazing refractive indices, is Kind-I crucial period matching. This is the frequent approach for destructive uniaxial crystals where no > ne.
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When pulse lengths are involving 1 ns and one µs, laser-induced hurt can occur either thanks to absorption or simply a dielectric breakdown (therefore, a consumer will have to Check out both CW and pulsed LIDT). Absorption is either due to an intrinsic assets with the optic or resulting from surface irregularities; Consequently LIDT values are only legitimate for optics Assembly or exceeding the surface good quality technical specs provided by a company.
) to blow off dust as well as other free contaminants to start with. If a dry nitrogen line is offered inside the lab, an website air gun can also be applied to blow away dust particles. Blow from the area Carefully. Don't blow off the crystal alone from your hand!
Any scratches can degrade the optical efficiency of the crystal and most likely cause problems beneath superior laser electrical power. For stubborn stains, an answer of delicate detergent or isopropyl alcohol might be Carefully applied to the crystal surface after which you can rinsed off with distilled drinking water.
At this kind of a specific wavelength, The sunshine possesses one of a kind Attributes that are invaluable to certain advanced programs. Allow’s delve deeper into the significance of this unique light-weight output.
What's more, BBO crystals may also be noted for their higher nonlinear coefficient, which enables them to successfully transform the frequency of light.
The wavelength of The sunshine applied as well as angle at which it enters the crystal may impression the crystal’s efficiency. Good alignment and handling on the crystal are very important to accomplishing best performance.
Figure 14 demonstrates a departure from a perfect polarization orientation for Variety-I SHG, where the incident fundamental industry has a linear polarization but is rotated by a degree γ from your principal normal axis .