KYW Crystal - An Overview
KYW Crystal - An Overview
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This exclusive attribute of ultrafast pulses permits nonlinear optical conversation with tissue at reduced Over-all exposure, and drives applications which include deep-tissue multiphoton microscopy and significant-precision eye surgical procedure
The Yb:KYW crystal’s proficiency in light absorption at all-around 981 nm would make the crystal well matched for diode pumping. It truly is even more Improved by its exceptional efficiency in this process, coupled with its low quantum defect.
FIG. 4. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of a laser with a rectangular active factor for an output ability of seven-hundred mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW as a result of identical measurements of such chemical aspects as much as 100% of Yb-doping can be realized. This exceptional characteristic permits ytterbium to take the spot of yttrium with practically no disruption towards the crystal’s lattice.
The monoclinic crystal buildings brings about a natural birefringence, assisting to stay away from thermally induced polarization rotation and check here depolarization loss.
Raman, luminescence and transmission spectra reveal optical options owing towards the existence of thulium ions, and therefore the components may very well be further more analyzed during the scope of laser and luminescence applications.
Tungstates have a tendency to get substantial Raman coefficients (�?Raman scattering). Thus, they can create important Raman gain at average optical intensities. It can be done to utilize the laser crystal itself as a Raman converter.
For tungstates, the ytterbium doping focus can be extremely substantial with out substantial quenching because the replaced ions have a very equivalent ion radius, plus the inter-ion length is pretty significant.
High-power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical programs
The thermal conductivity of typical double tungstates is on the buy to three–four W/(K m) �?which isn't bad in comparison with other laser crystals (While quite a few times fewer than for YAG), and pretty big as opposed While using the thermal conductivity of common Eyeglasses.
This tandem of attributes has significantly-achieving implications, particularly in the construction of compact yet powerfull lasers.
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