Optical parametric oscillation (OPO): We benefit from OPO to ascertain our items�?nonlinear conversion general performance and stage-matching angle to get a presented input wavelength and signal/idler wavelengths. We make specific that our objects fulfill the necessities for OPO programs.
Even though the above technique provides a superb guideline for LIDT values, you should Call Tech Assistance When your wavelength is different from the specified LIDT wavelength. In case your ability density is a lot less than the altered LIDT on the optic, then the optic need to work to your application.
Sadly, it could be very difficult to compare the LIDT specification of an optic for your laser. You'll find several regimes in which a pulsed laser can hurt an optic and this relies on the laser's pulse size. The highlighted columns inside the table down below outline the pertinent pulse lengths for our specified LIDT values.
In an effort to use the specified CW damage threshold of the optic, it's important to understand the subsequent:
Large-high-quality crystals could have fewer defects and produce much better general performance, although a reputable provider will stand at the rear of their goods and present help when necessary. Great customer care may also make the obtaining system smoother and even more enjoyable.
Stage matching considerably increases the conversion performance and might be necessary to obtain sufficient frequency-doubled light-weight for purposes, but next harmonic generation (SHG) will happen even though check here phase matching is just not done. The result of period matching over the output intensity of SHG gentle (I2ω) is illustrated in Figure 16.
This compose-up will explain how we crank out higher-top quality BBO crystals at our firm. We can even review some positive aspects and issues of working with BBO crystals for regularity conversion.
BBO crystals are a vital element in many optical programs because of their Remarkable Houses. Knowing their creation, Houses, managing, and utilization can assist consumers enhance their efficiency and lifespan.
The significant destruction threshold of BBO crystals is particularly essential in environments where by substantial-depth lasers would be the norm. Conventional supplies might falter, degrade, or simply crack underneath this kind of intensities.
Taken jointly, these varied applications underscore the huge price BBO crystals deliver to multiple sectors. By its unparalleled 266nm generation, the BBO crystal is not simply a tool but a catalyst, propelling developments throughout different fields.
Pumped from the fourth harmonic of the Nd:YAG laser (at 266nm), a tunable OPO with sign wavelength variety in between 422nm and 477nm is observed by angle-tuning a kind I BBO crystal. Pumped by a 1mJ, 80fs Dye laser at 615nm, the OPA with two BBO crystals yields a lot more than 50µJ (most one hundred thirtyµJ),
The position with the green curve depends on θ. In this instance, the angle θ has actually been tuned to deliver a refractive index for 515 nm gentle that matches the refractive index for 1030 nm mild. This tuning angle is thus optimized for Sort-I SHG section matching as well as a basic-frequency input beam of 1030 nm.
The wavelength of the light used plus the angle at which it enters the crystal can also affect the crystal’s performance. Appropriate alignment and dealing with of your crystal are important to reaching best performance.
For the reason that refractive index doesn't change linearly with frequency in dispersive crystals like β-BBO, it truly is impossible to optimally phase match each and every frequency during the input pulse's spectral assortment Along with the corresponding second harmonic frequency inside the produced pulse.