The Ultimate Guide To BBO Crystal
The Ultimate Guide To BBO Crystal
Blog Article
A: Certainly, BBO crystals show outstanding thermal steadiness, generating them appropriate for applications with different temperatures.
g. in the form of “grey monitoring�? These phenomena are particularly popular for Procedure with ultraviolet gentle. Observe that a gradual degradation can also direct into fast catastrophic injury through abnormal warmth era.
Their substantial damage threshold and superb thermal balance make them well suited for use in high-electricity laser systems, although their wide transparency range allows them to operate by using a broad selection of laser wavelengths.
The effectiveness of BBO crystals is often motivated by several aspects. The caliber of the crystal itself is paramount, as defects or impurities can degrade its optical Homes. The temperature at which the crystal operates may impact its overall performance, as adjustments in temperature can cause thermal expansion or contraction, likely altering the crystal’s optical properties.
, the angle in between the light's propagation direction and the crystal's optic axis is often tuned so which the refractive index of a certain frequency (ω) in the elemental input pulse exactly equals the refractive index of two times the input frequency (twoω). It is actually normal to optimize stage matching conditions to the frequency at approximately the center of the heartbeat's bandwidth.
Yes, BBO crystals can be personalized according to certain necessities. This incorporates personalized dimensions, styles, and coatings. On the other hand, customization may perhaps have an affect on the crystal’s Houses and functionality, so it should be accomplished by an experienced. Customized sizes and shapes could be cut from a bigger BBO crystal to suit unique programs.
The Rayleigh assortment quantifies the gap, measured with the beam midsection, over which the beam diameter is roughly continuous. The shorter the Rayleigh array, the much larger the rate of divergence.
When pulse lengths are involving 1 ns and 1 µs, laser-induced harm can happen both on account of absorption or perhaps a dielectric breakdown (as a result, a person will have to Look at equally CW and pulsed LIDT). Absorption is possibly as a result of an intrinsic home on the optic or as a result of surface area irregularities; As a result LIDT values are only valid for optics Assembly or exceeding the floor high quality requirements offered by a maker.
) to blow off dust and other free contaminants first. If a dry nitrogen line is accessible during the lab, an air gun will also be employed to blow absent dust particles. Blow from the surface area Carefully. Do not blow off the crystal by itself from your hand!
Any scratches can degrade the optical performance on the crystal and perhaps result in hurt under substantial laser power. For stubborn stains, an answer of mild detergent or isopropyl Liquor may be Carefully applied to the crystal floor after which rinsed off with distilled drinking water.
Newlight's BBO crystals are already broadly Employed in 2nd, third, fourth or fifth harmonic generations get more info for top electricity noticeable/UV resources, and optical parametric conversions for prime electrical power broadly tunable sources.
Even so, in lots of scenarios, the main difference in the basic and next harmonic pulse velocities can cause one particular pulse to drastically lag the opposite.
When an input pulse's spectral assortment is equal to or narrower compared to reference pulse, the produced 2nd harmonic pulse incorporates a length that is certainly shorter by an element of 1/√2 plus a spectral width that is definitely broader by an element of √two.
Our crystals are Utilized in a wide range of purposes, which include various kinds of nonlinear frequency conversion and electro-optics, but will also quantum technological know-how.