5 Simple Techniques For BBO Crystal
5 Simple Techniques For BBO Crystal
Blog Article
Custom made coatings might be applied to the crystal surfaces to enhance their functionality at certain wavelengths or to safeguard the crystal from environmental components. Having said that, it’s important to Take note that any customization really should be done meticulously to stay away from degrading the crystal’s optical Houses.
EKSMA Optics uses cookies to give you the finest purchasing working experience. For those who keep on to make use of our expert services, We'll suppose which you agree to the use of these cookies.
Optical transmission (OT): We benefit from OT to measure the optical passage spectrum of our merchandise over their openness array. We guarantee our solutions are devoid of absorption bands or scattering losses due to pollutants or issues.
Certainly, BBO crystals can be custom made to meet precise needs. This incorporates personalized measurements, designs, and coatings. Customized sizes and styles can be cut to suit precise optical methods, while custom made coatings can be applied to boost the crystal’s performance in particular applications.
linear absorption, which can induce heating at large optical energy stages, so that the phase matching is disturbed, and thermal lensing may well occur
The calculation earlier mentioned assumes a uniform beam intensity profile. You should now contemplate hotspots while in the beam or other non-uniform intensity profiles and around determine a greatest electrical power density.
When an optic is broken by a continual wave (CW) laser, it is frequently due to melting in the surface as a result of absorbing the laser's energy or damage to the optical coating (antireflection) [1]. Pulsed lasers with pulse lengths extended than 1 µs could be handled as CW lasers for LIDT discussions.
Nonlinear Crystals of possibly β-barium borate (BBO) or lithium triborate (LBO) are used for frequency conversion of laser sources. BBO crystals attribute thicknesses from 0.2mm to 0.5mm to reduce team velocity mismatch and are perfect for frequency here doubling or tripling of Ti:Sapphire and Yb:doped laser pulses. The significant and noncritical phase matching LBO crystals are perfect for second or third harmonic technology of Nd:YAG and Yb:doped lasers.
Beam diameter can also be essential to know when evaluating destruction thresholds. Although the LIDT, when expressed in units of J/cm², scales independently of location measurement; huge beam measurements are more likely to illuminate a larger range of defects which can result in better variances inside the LIDT [four].
To circumvent this, BBO crystals really should be saved in the dry natural environment and correctly sealed when not in use. Furthermore, any cleansing system needs to be accompanied by comprehensive drying to get rid of any residual humidity.
The 4 lower figures illustrate which the group velocity hold off (temporal stroll-off) increases given that the pulses propagate by the material. The temporal stroll-off is illustrated for distances Z0 by way of Z3, which might be indicated on the diagram at major.
As illustrated in the following desk, the shorter the crystal, the wider the reference pulse spectrum. The desk beneath assumes a elementary Heart wavelength in the near-IR.
3rd harmonic technology (THG): We use THG to measure our pieces�?nonlinear conversion effectiveness and period-matching angle for just a presented input wavelength. We make sure that our goods satisfy the specs for THG apps.
Humidity can result in water absorption about the crystal floor, that may degrade its optical performance. The caliber of the incident gentle, which include its wavelength, depth, and polarization, might also affect the performance of BBO crystals in many apps.