A: Yes, BBO crystals exhibit impressive thermal stability, creating them suitable for programs with various temperatures.
While the above mentioned procedure supplies a great guideline for LIDT values, you should Get hold of Tech Assist Should your wavelength differs from the specified LIDT wavelength. In the event your energy density is lower than the modified LIDT of your optic, then the optic ought to operate for your personal software.
In the event the Rayleigh range is below the crystal thickness, the space over which the beam is optimally intensive is less than the crystal thickness.
The performance of BBO crystals might be motivated by several things. The quality of the crystal alone is paramount, as defects or impurities can degrade its optical Qualities. The temperature at which the crystal operates also can impact its efficiency, as modifications in temperature could potentially cause thermal growth or contraction, probably altering the crystal’s optical Qualities.
The sort-I stage matching approach relies on matching the standard and incredible indices of refraction for the fundamental and second-harmonic frequencies, which happens to be achieved by way of specific orientation with the crystal optic axis and input propagation vector. A targeted laser pulse, or beam, has angular articles, formally identified as spatial frequencies, to produce the smaller focal place.
Large harm threshold: BBO crystals have superior destruction limitations which will rise up for their significant leading and common electric power with no degradation or injury.
β-BBO Crystal—a greatly employed nonlinear crystal for frequency conversion while in the ultraviolet, seen and in the vicinity of-infrared
This distinction triggers period mismatch between a variety of mild polarization elements when propagating by way of a BBO crystal. Modifying the angle involving the beam and crystal axes can compensate for this stage mismatch.
We also layer our goods with anti-reflection levels to lower representation losses at click here the crystal surfaces.
For the reason that dynamics of this method are really issue to experimental parameters, it is difficult to arbitrarily forecast the specific consequences on the 2nd harmonic pulse. These consequences can consist of back conversion, by which second harmonic mild is transformed again to basic mild, and spectral narrowing on the SHG pulse.
Dust and stains on crystal surfaces could cause scattering/decline of sunshine and can even respond with mild to wreck optical surfaces at a superior incident laser electrical power.
BBO nonlinear crystal is a detrimental uniaxial crystal. It provides section matching for different next-purchase interactions almost about its whole transparency array. This transparency ranges from 185 nm to 3.3 µm, as inferred from transmittance measurements working with crystal samples of a few mm thickness.
BBO crystals ought to be managed with care to stop scratching or detrimental their surfaces. They must be saved within a dry, neat location and held faraway from direct sunlight. Common cleansing having a comfortable fabric or air blower is usually recommended to maintain their optical efficiency. When dealing with BBO crystals, it’s essential to use gloves to circumvent oils from the skin from contaminating the crystal area.
No matter if you’re a researcher, a laser system designer, or an enthusiast, we hope this information has answered your questions on BBO crystals.