The 2-Minute Rule for a-BBO Crystal
The 2-Minute Rule for a-BBO Crystal
Blog Article
The calculation previously mentioned assumes a uniform beam intensity profile. It's essential to now take into consideration hotspots in the beam or other non-uniform intensity profiles and around determine a utmost electricity density.
This kind of resilience makes certain that its nonlinear Qualities are usually not conveniently compromised, which makes it a favourite in environments in which regularity and reliability are paramount.
Hello there, thank you for speaking to Thorlabs. The wavelength ranges of your antireflective coatings on these β-BBO crystals align Together with the respective wavelength bands that these crystals are optimized for. Requests for customizations might be made by reaching out to us at [email protected]
In quasi-stage matching, the crystal product is “poled�?to possess up and down domains to counteract the section-mismatch of the material, where by the poling period of time is certain to the wavelengths of conversation.
And lastly, the huge-angle tunability of BBOs facilitates customization like in no way ahead of. Depending on the particular necessities of the application, the crystal could be modified with precision, making certain the output is usually optimized.
Now Assess the most electricity density to that which happens to be specified because the LIDT for your optic. In case the optic was examined in a wavelength aside from your functioning wavelength, the problems threshold have to be scaled correctly.
The realm of fabric processing has equally benefited in the precision of 266nm era. Innovative microfabrication methods, which contain intricate detailing on components in a microscopic stage, call for a precise mild supply. The sharpness associated with the 266nm wavelength makes sure that lasers may make specific cuts, etches, and modifications.
The physical, chemical, optical, and thermal Homes with the α -BBO are just like Those people of the BBO crystals, however the α -BBO will not exhibit the nonlinear optical Qualities as a result of central symmetry of its crystal composition.
When pulse lengths are among 1 ns and 1 µs, laser-induced injury can take place either due to absorption or possibly a dielectric breakdown (thus, a consumer ought to Check out both of those CW and pulsed LIDT). Absorption is both as a consequence of an intrinsic assets of your read more optic or because of area irregularities; Therefore LIDT values are only valid for optics Assembly or exceeding the area high-quality requirements supplied by a manufacturer.
The temporal walk-off from the slower pulse with respect for the speedier is usually a considerable portion of the heartbeat length. This is illustrated in Figure 22.
The team velocity as well as the section velocity usually are not equivalent, meaning the sine wave on the provider as well as envelope of the pulse transfer through optical media at diverse speeds.
When choosing an SHG crystal, the heartbeat duration in the laser supply should be taken into account. A mismatch concerning the duration and crystal thickness will bring about SHG pulses for a longer period in time and narrower in spectral content material than attainable less than ideal circumstances.
Even so, the nonlinear optical Attributes of the-BBO crystal is vanished because of the centric symmetry with its crystal construction. It's not necessarily advisable to work with for NLO procedures.
Era of deep ultraviolet radiation at 210 nm by Variety-I third harmonic technology is accomplished in the pair of BBO crystals with conversion effectiveness as superior as 36%.