Not known Factual Statements About KTP Crystal
Not known Factual Statements About KTP Crystal
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Like lots of crystal designations, Individuals are both mongrelizations of chemical formulae and symbols and abbreviations. Potassium titanyl phosphate is most effectively KTiOPO4. Cause enough to connect with it just KTP.
Comparison of picked Houses of EO crystals, LN, and KTP, respectively. KTP was favored for EO gadgets for prime-electric power and high-repetition amount laser because of its lessen absorption, superior thermal Qualities, and equivalent EO Homes. The thermal influence of EO products is very first mainly because KTP is actually a quasi-1D superionic conductor, And so the electrical conductivity is favourable dependant upon temperature, causing electron-induced harm and discoloration at significant temperatures. 2nd, accompanying the rise in laser energy, certainly one of the key complications was the thermal defection in the back again-propagating beam as a consequence of thermally induced refractive index gradients (thermal lensing effect). Furthermore, Even though the birefringence improve caused by the temperature alter is usually compensated because of the double-crystal composition, the KTP with a big thermo-optic coefficient, and also the oscillating laser and pumping gentle Electricity absorbed because of the front is usually compensated and the again two crystals are distinctive, so in the significant pumping.
PDF KTP (Potassium titanyl phosphate) can be a nonlinear crystal typically Employed in extracavity configuration when a single pass through the crystal is necessary.
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For usually paired KTP EO units, mainly because of the sizeable thermo-optic coefficient of your KTP crystal, and the several Power of your oscillating laser and pumping mild absorbed by the back and front crystals, the thermal depolarization result will occur underneath the problem of significant pumping depth, which is able to bring on the deterioration of dynamic extinction ratio, the rise of insertion loss as well as minimize of switching effectiveness.
Having said that, sizeable linear EO coefficients and reduced dielectric constants32, which make KTP attractive for EO purposes for example EO modulators and Pockels mobile (Laptop), haven't been properly explored for product applications. A very significant advantage of KTP crystals in sensible electro-optical purposes is the secure Bodily properties. here Its dielectric constant and electro-optic coefficient are insensitive to frequency, which enable it to be has excellent frequency security. Its electro-optic coefficient is insensitivity to temperature, which led a nicely temperature stability. Furthermore its piezoelectric coupling outcome is weak, which make sure the sensor secure during the gear with additional vibration.
The laser diode is a device that emits a laser beam that has a wavelength of 808 nm (infrared) and an influence of 2 W. The laser diode is made use of like a pump source for your Nd:YVO4 crystal, that's a laser obtain medium that could amplify light at 1064 nm (infrared).
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KTP could be the mostly applied product for frequency doubling of Nd:YAG lasers along with other Nd-doped lasers, significantly within the very low or medium ability density. The subsequent table lists the most important NLO Houses of KTP for frequency-doubling of a Nd:YAG laser.
Once the KTP crystal is employed as an EO modulator, the utilized electric discipline is parallel on the z-axis, and The sunshine propagation course is parallel to your y-axis or x-axis. If a comparatively decreased transform-off voltage is wished-for, a y-axis switch is required. In exercise, extended x-axis switches will often be made use of to get the desired low turn-off voltage for crystal advancement economics. The E-O coefficient with the H-KTP crystal may be decided as comply with in Table three. Our EO coefficient measurement outcomes at 632.eight nm are in keeping with the 1986 take a look at final results utilizing the hydrothermal process KTP32.
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Although the linear, nonlinear, and EO properties of KTP crystals developed through the flux and hydrothermal methods are identical, dissimilarities have been observed in some dielectric Homes and also the incredibly superior-electricity optical destruction traits.