New Step by Step Map For BBO Crystal
New Step by Step Map For BBO Crystal
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Occasionally, the mismatch is usually tiny. As an example, any time a β-BBO crystal is used to frequency double 1550 nm light-weight and provide 775 nm mild, the team velocity mismatch is just a few femtoseconds for every millimeter.
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A1: Certainly, BBO crystals have a superior damage threshold, building them appropriate for higher-ability laser devices. Their means to resist significant laser intensities without the need of suffering from optical damage tends to make them a wonderful option for frequency conversion in large-ability lasers.
So as to use the specified CW hurt threshold of an optic, it's important to understand the following:
Superior-excellent crystals may have much less defects and provide far better general performance, although a reputable supplier will stand behind their solutions and offer you aid when needed. Excellent customer service might also make the paying for system smoother plus much more pleasurable.
Such resilience ensures that its nonlinear properties aren't conveniently compromised, which makes it a favourite in environments wherever regularity and reliability are paramount.
When laser light-weight is focused to your place, the diameter from the beam waistline will be the focal location dimension, and the speed at which The sunshine diverges through the beam waistline is relevant to the Rayleigh array (zR).
When pulse lengths are involving 1 ns and 1 µs, laser-induced damage can arise either thanks to absorption or a dielectric breakdown (consequently, a consumer ought to Examine both CW and pulsed LIDT). Absorption is both due to an intrinsic assets of your optic or because of surface area irregularities; As a result LIDT values are only legitimate for optics Assembly or exceeding the floor quality specifications given by a company.
) to blow off dust and other loose contaminants first. If a dry nitrogen line is on the market in the lab, an here air gun may also be utilised to blow absent dust particles. Blow off the floor gently. Will not blow from the crystal by itself out of your hand!
To circumvent this, BBO crystals really should be saved inside a dry ecosystem and correctly sealed when not in use. Also, any cleansing procedure really should be accompanied by thorough drying to eliminate any residual moisture.
BBO crystals are renowned for their Excellent optical Attributes. Their broad transparency array enables them to operate properly across a wide spectrum, from ultraviolet to in close proximity to-infrared light-weight. This would make them incredibly flexible and well suited for various apps.
They even have a substantial injury threshold, allowing them to manage large-electricity laser beams devoid of degradation. These exceptional Qualities make BBO crystals a versatile Instrument in many optical purposes.
Therefore, the next harmonic pulse spectrum, shown on the ideal, incorporates a spectral width about similar to the ideal scenario. Preferably, every single frequency in the elemental pulse spectrum might be simultaneously section matched.
Because of its excellent Houses BBO crystal features a selection of benefits for various applications, like NOPA with fsec pulses, harmonics technology (around fifth) of Nd:YAG and Nd:YLF lasers, frequency doubling or tripling of femtosecond Ti:Sapphire and dye lasers, OPO at Type one and sort two period-matching, E/O switching for Pockels cells and a number of other.