The BBO Crystal Diaries
The BBO Crystal Diaries
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Optical crystals can exhibit different kinds of optical nonlinearities, which may be used in various means:
BBO is the one NLO substance that may be utilised to provide the fifth harmonic technology (5HG) of Nd:YAG lasers at 213 nm. Because of a small acceptance angle and large angular walkoff, great laser beam excellent (little divergence, fantastic method condition, etc.
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One of many defining properties of BBO crystals is their high damage threshold. This means that they might endure higher levels of laser power with no suffering from degradation or harm.
High-top quality crystals can have much less defects and provide greater general performance, even though a dependable supplier will stand behind their solutions and offer guidance when essential. Good customer care may also make the purchasing system smoother plus more pleasing.
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Make sure you note that We've a buffer constructed between the required hurt thresholds online and the tests which We've got carried out, which accommodates variation concerning batches. On ask for, we can offer particular person examination information and facts and a screening certification.
The duration from the crystal is a vital parameter to take into account when optimizing the SHG method for your parameters of particular enter pulses. Absent period-matching and temporal stroll-off effects, the SHG output will increase exponentially with crystal duration. The goal when buying an SHG crystal is to equilibrium the crystal duration with the limitations based on the basic pulse. Decreasing the crystal thickness cuts down outcomes linked to both equally phase-matching bandwidth limits and temporal wander-off, which are directly related.
The team velocities of the elemental and second harmonic pulses can also be unique, even though period-matched, and the magnitude in the group velocity mismatch is dependent upon the crystal Houses as well as optical frequencies during the pulses.
Small acceptance angle: BBO crystals have a little acceptance angle that boundaries the input light-weight beam’s mild beam divergence and top method high-quality for successful regularity conversion.
Hello, I was wanting to know if it's doable for you to produce a BBO crystal which has a custom made coating at 532nm fundamental and 266nm second harmonic era. Very best, Ben
The spectrally narrowed SHG pulse spectrum is claimed for being apodized, because an outcome of the fundamental pulse exceeding the maximum enter bandwidth Restrict would be the elimination of the highest and least expensive frequencies within the SHG pulse spectrum.
Inside the health-related discipline, imaging stands out as among the list of vital procedures, performing as being a window in to the human body. The precision and clarity furnished by the 266nm technology have revolutionized specified imaging procedures. This specific wavelength, when employed in imaging, can create sharp, superior-resolution visuals that help get more info clinicians in determining moment abnormalities or modifications in tissue structures that might in any other case be forgotten.
Humidity may cause water absorption over the crystal area, which often can degrade its optical effectiveness. The caliber of the incident light, together with its wavelength, depth, and polarization, also can have an effect on the general performance of BBO crystals in a variety of applications.