These raw supplies are carefully measured and blended in specific proportions to ensure the optimal composition of the resulting crystals.
Hi there, thank you for contacting Thorlabs. The wavelength ranges of your antireflective coatings on these β-BBO crystals align While using the respective wavelength bands that these crystals are optimized for. Requests for customizations is often produced by achieving out to us at [email protected]
And finally, the extensive-angle tunability of BBOs facilitates customization like never ever right before. Depending on the certain specifications of the application, the crystal is often adjusted with precision, guaranteeing that the output is always optimized.
As the second harmonic gentle propagates, its Power flows in a unique course than that of the fundamental light.
Wide openness range: BBO crystals have a broad openness array from 189 nm to 3500 nm, masking ultraviolet, noticeable, and in close proximity to-infrared areas. This allows BBO crystals to be used for varied laser resources with many wavelengths.
Beta-Barium Borate, generally known as BBO crystals, are a unique kind of nonlinear optical crystal that have obtained substantial recognition in the sector of optics and photonics. These crystals are renowned for their in depth transparency vary, which extends from your ultraviolet towards the around-infrared spectrum.
Now Examine the most ability density to that which can be specified as being the LIDT to the optic. In case the optic was analyzed in a wavelength apart from your working wavelength, the problems threshold has to be scaled correctly.
g. twenty μm. The group velocity mismatch within the thicker substrate material might not make any difference, as being the nonlinear interaction normally takes put only in The skinny crystal. The substrate only serves to mechanically stabilize The skinny nonlinear crystal.
Beam diameter is also essential to know when evaluating injury thresholds. Whilst the LIDT, when expressed in units of J/cm², scales independently of spot dimension; significant beam measurements usually tend to illuminate a larger quantity of defects which may result in bigger variances within the LIDT [four].
Since the dynamics of this process are really matter to experimental parameters, it's tricky to arbitrarily predict the exact results on the next harmonic pulse. These effects can incorporate again conversion, through which second harmonic mild is transformed back again to fundamental light, and spectral narrowing from the SHG pulse.
In addition, the structural and compositional characteristics of BBO provide it with exceptional thermal balance and resistance against environmental difficulties.
As illustrated in the subsequent desk, the shorter the crystal, the wider the reference pulse spectrum. The desk under assumes a fundamental Middle wavelength inside the in the vicinity of-IR.
Here is the so-called oo-e arrangement, as The 2 photons from the fundamental are polarization-oriented alongside the common axis and the 2nd harmonic photon's polarization is inside the remarkable aircraft.
For the reason that refractive index does not range linearly with frequency in dispersive crystals like β-BBO, it is actually impossible to optimally period match each and every frequency within get more info the input pulse's spectral range with the corresponding next harmonic frequency in the generated pulse.