This short article dives deep into the advantages and special properties of BBO crystal and its paramount significance in effective frequency doubling and harmonics generation at 266nm.
A2: Of course, prolonged exposure to humidity can degrade the optical general performance of BBO crystals. Humidity may result in drinking water absorption over the crystal floor, which may have an effect on its optical Houses.
The hurt Examination are going to be completed on an analogous optic (purchaser's optic will not be damaged). Screening could bring about further expenditures or direct situations. Speak to Tech Aid For more info.
Take note that even though the nominal intensity is down below the nominal problems threshold, there might be complications due to fluctuations during the beam electrical power or community depth (e.g., if a beam profile has “warm places�?, or because of isolated defects within a crystal, which are extra sensitive when compared to the typical crystal materials.
Higher-quality crystals can have much less defects and supply superior overall performance, although a reliable supplier will stand guiding their products and give assist when wanted. Great customer service can also make the getting procedure smoother plus much more pleasurable.
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When an optic is destroyed by a continual wave (CW) laser, it is frequently due to the melting with the surface area as a result of absorbing the laser's energy or harm to the optical coating (antireflection) [1]. Pulsed lasers with pulse lengths for a longer time than 1 µs might be treated as CW lasers for LIDT discussions.
The team velocity as well as phase velocity will not be equal, meaning the sine wave from the copyright and the envelope of the pulse transfer through optical media at different speeds.
For customer usefulness the crystals is usually mounted within an 1" anodized aluminum (Al) mount. The mounted crystals can be further more mounted in a standard one" mirror mount to get angle tuned for phase matching (as revealed to the best). H2o-cooled mounts for prime power apps is usually presented upon ask for.
One example is, anti-reflective coatings is usually applied to cut down light loss resulting from reflection, even though protective coatings may be used to boost the crystal’s resistance to environmental factors. Customization allows for best general performance in particular purposes.
This residence is especially advantageous in applications that entail significant-electric power lasers or extreme light resources, since it assures the longevity and trustworthiness on the crystal in these types of demanding ailments.
On the other hand, in several cases, the difference in the fundamental and second harmonic pulse velocities can cause a single pulse to drastically lag another.
In the case of ultrashort pulses the superior team velocity mismatch enforces using a shorter crystal, which demands high optical intensities for your presented conversion efficiency.
On account of its great Qualities BBO crystal has a quantity of advantages for various applications, like NOPA with fsec pulses, harmonics generation (nearly fifth) of Nd:YAG and Nd:YLF lasers, frequency doubling or tripling of femtosecond Ti:Sapphire and dye lasers, OPO at Variety 1 and Type 2 section-matching, E/O switching for Pockels cells and a number of other.