5 Tips about a-BBO Crystal You Can Use Today
5 Tips about a-BBO Crystal You Can Use Today
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The calculation above assumes a uniform beam depth profile. You have to now look at hotspots during the beam or other non-uniform depth profiles and about work out a utmost electric power density.
A1: Sure, BBO crystals have a significant damage threshold, generating them suitable for higher-ability laser techniques. Their capability to resist significant laser intensities devoid of struggling from optical harm tends to make them an outstanding option for frequency conversion in higher-electrical power lasers.
The situation from the green curve is dependent upon θ. In such a case, the angle θ continues to be tuned to deliver a refractive index for 515 nm light-weight that matches the refractive index for 1030 nm light. This tuning angle is consequently optimized for Sort-I SHG phase matching as well as a fundamental-frequency enter beam of 1030 nm.
A: A large injury threshold assures the crystal can manage much more ability devoid of degrading, bringing about lengthier lifespan and constant general performance.
Other period matching ailments also are probable. Critical Form-II section matching utilizes an oe-o or eo-e for favourable and adverse uniaxial crystals. Non-vital section matching takes advantage of crystal temperature to obtain phase matching rather than angular tuning.
Make sure you Observe that We've a buffer designed in between the specified injury thresholds online and the exams which Now we have performed, which accommodates variation involving batches. On request, we can provide unique test information and also a tests certificate.
The spatial wander-off angle is determined by the dimensions of the beam as well as the crystal length. Whilst the angle can be considerable, it is generally little, commonly on the order of ten mrad, and may be neglected.
Having said that, whilst BBO crystals can work at area temperature, Serious temperatures need to still be averted as they will influence the crystal’s period-matching situations and most likely bring about damage.
Such as, think about a elementary pulse propagating around a given crystal thickness. Once the temporal stroll-off is bigger than the period of the elemental pulse, this pulse will also have a spectral bandwidth that tremendously exceeds the spectral width of your reference pulse. A common rule for limiting the harmful effects connected with both of those Bodily outcomes is to decide on a crystal thickness that boundaries the basic and next harmonic temporal wander-off to not more than the period of the elemental pulse.
The temporal wander-off of the slower pulse with regard towards the check here more quickly can be a considerable portion of the heartbeat length. That is illustrated in Determine 22.
Each broad-bandwidth pulses and temporal wander-off cause a discount from the conversion efficiency, and also worsen the optical excellent of the second harmonic pulses. The right crystal thickness needs to be decided on to reduce both equally consequences.
This characteristic translates to diminished want for extensive thermal administration techniques, once again accentuating Price tag personal savings and technique simplicity.
In essence, to understand the BBO Crystal would be to grasp the guts of reducing-edge optical science. It’s a cloth that doesn’t merely engage in the world of photonics but actively shapes and drives its frontier.
This informative article dives deep into the benefits and exclusive properties of BBO crystal and its paramount great importance in successful frequency doubling and harmonics technology at 266nm.