Top BBO Crystal Secrets
Top BBO Crystal Secrets
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Non-linear Optical (NLO) crystals deliver an enormously flexible Alternative for making new wavelengths from current, off-the-shelf laser sources. The optical wavelength spectrum is used by a large and continually growing a number of purposes, from manufacturing of professional medical lasers, quantum networking & computing via to environmental sensing along with numerous Other people.
The selection of the most fitted crystal content for any supplied application is frequently significantly from trivial; it must involve the thing to consider of many factors. Such as, a substantial nonlinearity for frequency conversion of ultrashort pulses doesn't assist Should the conversation duration is strongly restricted by a large group velocity mismatch and also the very low injury threshold restrictions the relevant optical intensities.
Thorlabs provides a big variety of optics optimized for use with femtosecond and picosecond laser pulses. Make sure you see below For more info.
The phase-matching abilities of BBO crystals are entitled to Exclusive mention. During the intricate dance of photons, wherever conversion from one wavelength to a different is frequently ideal, the section-matching made available from BBO makes sure that Vitality losses are nominal.
BBO provides a minimal susceptibility to dampness. The AR coating or perhaps the protective coating (P-coating) within the crystal faces can guard the faces from humidity to some extent. It is ok to leave the crystal while in the set up for some optics labs with RH =< 40%. Nevertheless, we advise to keep the crystal inside of a desiccator if it will not be applied for more than > 2 weeks to extend the crystal life span.
If the crystal surfaces remain “filthy�?just after the above cleansing methods, the surfaces may have been harmed. Be sure to Get in touch with us for rework on the crystals.
Now compare the maximum power density to that which is specified given that the LIDT with the optic. When the optic was tested in a wavelength other than your working wavelength, the damage threshold must be scaled appropriately.
Provided these applications, it’s apparent why BBO, with its inherent capacity to efficiently produce the 266nm wavelength, is so highly prized. The crystal’s exclusive nonlinear optical Homes permit the conversion of other wavelengths in to the coveted 266nm light-weight, ensuring that researchers and industries have access to this very important Resource.
BBO’s flexibility certainly shines when a person considers the breadth of its purposes. It’s not just confined get more info to 1 area of interest of photonics but stretches throughout several domains. Acquire frequency doubling, By way of example. In this method, photons with the exact frequency Incorporate throughout the crystal to make new photons with double the frequency of the original.
The phase matching angle may be altered by rotating the crystal round the y axis. An adjustment that is often in just a few degrees can possibly improve the efficiency on the crystal during the set up or match A different basic frequency inside the crystal's operating variety.
How are BBO Crystals Generated? BBO crystals are made using the flux method, which entails melting a mix of barium borate and barium fluoride and slowly but surely cooling it to sort crystals.
The spectrally narrowed SHG pulse spectrum is alleged to be apodized, considering the fact that an influence of the basic pulse exceeding the maximum enter bandwidth limit is the elimination of the highest and least expensive frequencies with the SHG pulse spectrum.
The wavelength of the light used as well as the angle at which it enters the crystal can also impression the crystal’s overall performance. Correct alignment and dealing with from the crystal are essential to accomplishing ideal efficiency.
This can make them really tough and resilient, even more maximizing their suitability for challenging optical programs.