The Ultimate Guide To BBO Crystal
The Ultimate Guide To BBO Crystal
Blog Article
This post dives deep into the benefits and distinctive Qualities of BBO crystal and its paramount relevance in productive frequency doubling and harmonics generation at 266nm.
Howdy, thanks for calling Thorlabs. The wavelength ranges in the antireflective coatings on these β-BBO crystals align with the respective wavelength bands that these crystals are optimized for. Requests for customizations could be produced by reaching out to us at techsupport@thorlabs.com
Their superior damage threshold and outstanding thermal balance make them ideal for use in superior-electricity laser programs, even though their extensive transparency array permits them to work with a broad choice of laser wavelengths.
It can be greatly used for nonlinear frequency conversion in the ultraviolet, obvious, and in close proximity to-infrared. The BBO crystal would be the most critical nonlinear crystal for around-infrared optical parametric chirped-pulse amplifiers, which at this time supply couple optical cycle pulses with large typical and ultrahigh peak powers.
For beams that has a higher PRF each the normal and peak powers has to be as compared to the equivalent CW power. Moreover, for very transparent products, You can find small to no drop within the LIDT with escalating PRF.
In the situation of Sort-I section matching and β-BBO crystals, the elemental mild propagates as an extraordinary wave in the crystal, whilst the second harmonic gentle propagates as an ordinary wave.
This compose-up will describe how we produce superior-quality BBO crystals at our company. We will also review some pros and problems of working with BBO crystals for regularity conversion.
The size in the crystal is an important parameter to contemplate when optimizing the SHG method with the parameters of distinct enter pulses. Absent period-matching and temporal stroll-off effects, the SHG output increases exponentially with crystal length. The intention when selecting an SHG crystal would be to equilibrium the crystal size with the restrictions based on the fundamental pulse. Lowering the crystal thickness lowers results connected to equally stage-matching bandwidth restrictions and temporal stroll-off, which are specifically similar.
BBO crystals are sensitive and need cautious handling to circumvent harm to their surfaces. They should be taken care of with clear, lint-totally free gloves to avoid scratching or contaminating their surfaces. When not in use, BBO crystals should be saved within a neat, dry put faraway from direct daylight, as prolonged publicity to warmth and lightweight can degrade their optical Attributes.
If you don't discover the suited solutions earlier mentioned, you could possibly allow us to know your necessities or purposes in the shape down below. Our profits or complex workers will get back again for you without delay.
The Uncooked components, generally a mixture of barium carbonate and boric acid, are put inside of a platinum crucible and heated right up until they melt. The temperature is then step by step lowered, letting the BBO crystal to variety above several months. The crystal is then extracted, Slice into the desired condition, and polished to attain a superior-top quality optical surface.
Pulsed lasers with superior pulse repetition frequencies (PRF) could behave equally to CW beams. Regretably, this is highly dependent on factors like absorption and thermal diffusivity, so there's no trustworthy strategy for identifying whenever a substantial PRF laser will damage an optic as a consequence of thermal outcomes.
This is the so-named oo-e arrangement, as The 2 photons from the fundamental are polarization-oriented alongside the regular axis click here and the second harmonic photon's polarization is from the incredible plane.
The duration in the SHG crystal noticeably impacts the spectral width with the reference pulse, or alternatively the bandwidth from the SHG filter.