5 Simple Techniques For BBO Crystal
5 Simple Techniques For BBO Crystal
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Crystals that are non-critically stage-matched inside a crystal oven might exhibit complications if the crystal temperature is modified far too promptly or way too frequently. Specifically, anti-reflection coatings may be harmed as a consequence of diverse thermal growth coefficients of your concerned resources.
The 2 frequencies' phase velocities are equivalent if they hold the similar refractive index. The refractive indices for these two frequencies are commonly not equal, mainly because all media apart from vacuum are dispersive. Consequently a material's refractive index depends on The sunshine's frequency.
Thorlabs offers a wide selection of optics optimized to be used with femtosecond and picosecond laser pulses. Please see under for more information.
The Z-axis is parallel for the optical axis of your crystal and is On top of that known as the fantastic axis. The X- and Y-axes are parallel for the optical axis and they are called typical axes.
linear absorption, that may result in heating at significant optical electricity levels, so that the phase matching is disturbed, and thermal lensing may perhaps occur
BBO crystals have two refractive indices: ne for amazing rays and no for standard rays. The difference between ne and no depends on the wavelength of light as well as the crystal’s temperature.
When laser gentle is focused into a place, the diameter of your beam waist is definitely the focal spot measurement, and the speed at which The sunshine diverges with the beam waist is associated with the Rayleigh range (zR).
The group velocity along with the period velocity are usually not equal, which means the sine wave on the copyright as well as the envelope of the heartbeat go via optical media at various speeds.
These processes require blending two or more enter beams of sunshine with a variety of frequencies to supply a outcome beam having a new frequency.
Although this general guideline presents BBO Crystal a normal craze, It's not at all a quantitative Examination of LIDT vs wavelength. In CW applications, for instance, harm scales more strongly with absorption from the coating and substrate, which won't essentially scale properly with wavelength.
Also, the structural and compositional characteristics of BBO deliver it with exceptional thermal steadiness and resistance against environmental problems.
The crystal axis is c. The Main ray is parallel to your way utilized to measure the tuning angle (θ), which happens to be optimized during section matching. Conversion effectiveness is optimized for rays parallel to your chief ray and even worse for rays at more substantial angles (ψ) to your chief ray.
GWU-Lasertechnik has over thirty several years of expertise in distributing laser crystals. Select GWU to take advantage of our wide awareness and in-area working experience!
Our crystals are used in a variety of apps, which includes different types of nonlinear frequency conversion and electro-optics, but also quantum technological know-how.