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β-BBO Crystal—a greatly utilized nonlinear crystal for frequency conversion during the ultraviolet, seen and close to-infrared

Any scratches can degrade the optical functionality with the crystal and likely lead to hurt beneath high laser electric power. For stubborn stains, an answer of moderate detergent or isopropyl Liquor may be gently placed on the crystal surface area then rinsed off with distilled drinking water.

This performance is significant, especially when just one considers the era from the 266nm wavelength, where even insignificant inefficiencies can cause substantial Strength losses.

Numerous variables can influence the overall performance of BBO crystals. These involve temperature, humidity, and the quality of the incident mild. Good dealing with and storage might help manage the crystal’s efficiency. Temperature can have an impact on the section-matching circumstances of BBO crystals, which in turn impacts their effectiveness in frequency conversion programs.

Thorlabs expresses LIDT for CW lasers as being a linear electricity density measured in W/cm. Within this routine, the LIDT specified for a linear electric power density could be applied to any beam diameter; 1 isn't going to must compute an adjusted LIDT to adjust for improvements in spot measurement, as shown through the graph to the correct. Normal linear energy density could be calculated utilizing the equation under. 

Bodily, when the fundamental spectrum is very well inside the reference pulse spectrum, the SHG pulse intensity profile will be the sq. of the fundamental depth profile, proficiently truncating the duration. This circumstance is illustrated in Figure 20.

As illustrated in the subsequent table, the shorter the crystal, the wider the reference pulse spectrum. The desk below assumes a elementary Centre wavelength from the close to-IR.

BBO crystals needs to be handled with treatment in order to avoid scratching or damaging their surfaces. They here must be saved in a very dry, awesome area and stored clear of immediate daylight. Typical cleansing which has a tender fabric or air blower is suggested to take care of their optical performance. When dealing with BBO crystals, it’s crucial that you use gloves to circumvent oils with the skin from contaminating the crystal floor.

With correct treatment and handling, BBO crystals can very last for many years. On the other hand, their lifespan may be shortened by things including substantial temperature, humidity, and Actual physical harm. BBO crystals are sturdy and durable, but Like all optical element, they will degrade over time if not effectively cared for.

It is greatly utilized for nonlinear frequency conversion during the ultraviolet, seen, and near-infrared. The BBO crystal is definitely the most crucial nonlinear crystal for near-infrared optical parametric chirped-pulse amplifiers, which at the moment supply handful of optical cycle pulses with high normal and ultrahigh peak powers.

For beams having a superior PRF both the normal and peak powers has to be in comparison to the equal CW ability. Also, for very clear elements, There exists small to no fall from the LIDT with increasing PRF.

A recommended guideline for focusing femtosecond laser pulses into a nonlinear crystal is to keep up a Rayleigh variety which is a minimum of several moments more time compared to size of the SHG crystal. This minimizes the prospect of harmful the crystal, and also lowers the negative consequences of spatial period mismatch and spatial (Poynting vector) stroll-off.

Generation of deep ultraviolet radiation at 210 nm by Kind-I third harmonic generation is achieved in a set of BBO crystals with conversion performance as superior as 36%.