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5 mm to minimize team velocity mismatch and are perfect for frequency doubling or tripling of Ti:sapphire and Yb:doped laser pulses. The critical and noncritical section matching LBO crystals are perfect for 2nd or third harmonic era of Nd:YAG and Yb:doped lasers.
) is The real key for BBO to acquire substantial conversion efficiency. Limited concentrate of laser beam is just not encouraged.
Even very well down below the threshold for instant destruction, some crystal components show a steady degradation within the applied quantity, e.
Significant hurt threshold: BBO crystals have higher injury limitations that may get up to their higher leading and normal ability with no degradation or problems.
The reducing angle is dependent on the popular stage-matching issue for frequency conversion applications. Stage matching describes matching the period speeds of varied beams associated with nonlinear processes so they Develop up constructively in excess of fars absent Within the crystal.
A next problem would be that the group velocity mismatch involving the 2nd harmonic and essential-frequency pulses will result in a single pulse lagging the opposite as the two propagate. This is referred to as temporal wander-off and will happen even below ideal phase-matched problems.
BBO crystals are sensitive and involve watchful dealing with to stop harm to their surfaces. They ought to be dealt with with clean up, lint-totally free gloves to avoid scratching or contaminating their surfaces. When not in use, BBO crystals really should be stored inside a cool, dry place clear of immediate daylight, as extended publicity to heat and lightweight can degrade their optical Houses.
As an alternative to decompose the SHG polarization into elements Ex and Ez, the light is often called a unprecedented wave (E'e) which has a refractive index, n'e. While in the diagram on the proper, n'e, which will depend on θ, is indicated from the intersection of the conic area illustrated via the purple ellipse While using the XZ plane.
Newlight's BBO crystals are already greatly Utilized in second, 3rd, fourth or fifth harmonic generations for prime power noticeable/UV resources, and optical parametric conversions for prime energy broadly tunable resources.
The crystal axis is c. The chief ray is parallel towards the direction utilized to measure the tuning angle (θ), which is optimized get more info all through period matching. Conversion efficiency is optimized for rays parallel into the Main ray and worse for rays at bigger angles (ψ) into the chief ray.
GWU-Lasertechnik has more than 30 yrs of knowledge in distributing laser crystals. Decide on GWU to gain from our vast information As well as in-area encounter!
The 266nm wavelength features precise interactions that other wavelengths can’t, which makes it indispensable for detecting and learning certain compounds.