What Does BBO Crystal Mean?
What Does BBO Crystal Mean?
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Occasionally, the mismatch might be smaller. For instance, any time a β-BBO crystal is utilized to frequency double 1550 nm gentle and supply 775 nm light, the team velocity mismatch is only a few femtoseconds for every millimeter.
BBO is the only real NLO material which can be applied to generate the fifth harmonic generation (5HG) of Nd:YAG lasers at 213 nm. As a consequence of a little acceptance angle and large angular walkoff, excellent laser beam quality (compact divergence, excellent manner affliction, and so forth.
Thorlabs offers a big choice of optics optimized to be used with femtosecond and picosecond laser pulses. Remember to see below To learn more.
As the 2nd harmonic light propagates, its Vitality flows in another way than that of the basic mild.
Next harmonic era (SHG): We employ SHG to measure our things�?nonlinear conversion effectiveness and phase-matching angle for your presented input wavelength. We assure that our items fulfil the necessities for SHG applications.
A number of different section-matching ways can be used to equalize the refractive indices of the fundamental and second harmonic light. One system, which employs linearly polarized light-weight plus the difference between the everyday and incredible refractive indices, is Style-I important stage matching. It is a common tactic for unfavorable uniaxial crystals wherein no > ne.
The Rayleigh variety quantifies the space, calculated within the beam waistline, over which the beam diameter is approximately consistent. The shorter the Rayleigh assortment, the much larger the speed of divergence.
When pulse lengths are amongst 1 ns and one µs, laser-induced damage can come about both because of absorption or a dielectric breakdown (hence, a user ought to check both equally CW and pulsed LIDT). Absorption is either due to an intrinsic assets with the optic or because of floor irregularities; Therefore LIDT values are only valid for optics Assembly or exceeding the area high quality technical specs provided by a company.
The spatial wander-off angle depends upon the dimensions on the beam and also the crystal size. Even though the angle might be important, it is normally little, normally about the purchase of 10 mrad, and will be neglected.
It is typically essential to target the incident light in the crystal for SHG applications, since productive technology of next harmonic gentle calls for higher peak intensities, like 109 W/cm2. When making use of femtosecond pulses with average energies from the nanojoule array, obtaining the expected peak intensities can call for tiny focal spots.
Higher nonlinear coefficients: BBO crystals have considerable nonlinear coefficients that make effective frequency conversion procedures with low input electricity requires attainable.
They even have a significant hurt check here threshold, making it possible for them to deal with higher-energy laser beams without degradation. These one of a kind Homes make BBO crystals a versatile tool in many optical apps.
GWU-Lasertechnik has in excess of 30 decades of experience in distributing laser crystals. Pick out GWU to reap the benefits of our huge know-how As well as in-discipline practical experience!
When selecting a provider, think about variables including the provider’s practical experience, product top quality, customer support, and pricing. It’s also a good idea to ask for a sample or possibly a exam report back to validate the quality of the crystals before making a buy.