Make sure you use "Add to Cart" to put the fascinating goods within the purchasing cart. Consider with online payment or question us for the costs/availability by means of the buying cart.
Beta Barium Borate (BBO) crystals are already a subject of fascination in the sphere of optics and photonics due to their exceptional Attributes. In this article, we intention to reply ten typical questions about BBO crystals, delivering a comprehensive knowledge of this interesting material.
While this guideline supplies a basic trend, it is not a quantitative Investigation of LIDT vs wavelength. In CW purposes, As an illustration, hurt scales a lot more strongly with absorption within the coating and substrate, which won't necessarily scale properly with wavelength.
The stage matching angle might be modified by rotating the crystal round the y axis. An adjustment that is usually in just a number of levels can possibly improve the effectiveness with the crystal during the set up or match Yet another basic frequency within the crystal's working assortment.
Several aspects can have an effect on the general performance of BBO crystals. These involve temperature, humidity, and the caliber of the incident mild. Suitable managing and storage may also help manage the crystal’s general performance. Temperature can impact the phase-matching situations of BBO crystals, which subsequently has an effect on their efficiency in frequency conversion applications.
In the situation of Variety-I stage matching and β-BBO crystals, the fundamental light propagates as a unprecedented wave while in the crystal, while the 2nd harmonic mild propagates as an ordinary wave.
Phase matching significantly enhances the conversion performance and may be necessary to attain sufficient frequency-doubled mild for purposes, but next harmonic generation (SHG) will arise regardless of whether phase matching is just not executed. The impact of stage matching to the output depth of SHG light-weight (I2ω) is illustrated in Determine 16.
As illustrated in the following desk, the shorter the crystal, the broader the reference pulse spectrum. The table under assumes a basic center wavelength during the in close proximity to-IR.
Since the refractive index doesn't vary linearly with frequency in dispersive crystals like β-BBO, it's not possible to optimally stage match each frequency within the enter pulse's spectral vary While using the corresponding 2nd harmonic frequency while in the generated pulse.
The temporal walk-off of the slower pulse with respect on the a lot quicker can be a substantial fraction of the pulse duration. This can be illustrated in Figure 22.
Each aspect of BBO, from its atomic construction to its wide application spectrum, underscores its pivotal job in modern day science and know-how.
When evaluating an LIDT specified for a pulsed laser for your laser, it is important to understand the following:
When an input pulse's spectral assortment is equivalent to or narrower in comparison to the reference pulse, the produced 2nd harmonic pulse provides a length that is definitely shorter by an element of 1/√2 along with a spectral width that's broader by a website factor of √two.
Pulsed lasers with large pulse repetition frequencies (PRF) may possibly behave likewise to CW beams. Regrettably, this is extremely dependent on elements such as absorption and thermal diffusivity, so there isn't any dependable method for analyzing any time a significant PRF laser will hurt an optic on account of thermal results.