An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW may be very substantial in comparison with that of Yb:YAG. This allows for large wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values very well underneath one hundred fs are already reached with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is a impressive materials that plays an important part in laser technological innovation. Its Principal perform would be to make ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at close to 981 nm can make the crystal compatible for diode pumping. It can be even further Improved by its exceptional performance in this process, coupled with its minimal quantum defect.
The absorption and emission spectra of Yb:KYW Crystals display strong peaks at 980 nm and 1030 nm, respectively, making sure successful Electrical power conversion and superior effectiveness in laser programs.
Ultrafast lasers, with pulse widths of a few picoseconds (10−twelve s) or fewer, help enough time resolution required in laser-energized fluorescence life span spectroscopy and imaging techniques.Furthermore, they supply higher pulse peak powers at higher repetition prices and reasonable average output powers.
The monoclinic crystal structures leads to a purely natural birefringence, assisting to stay away from thermally induced polarization rotation and depolarization loss.
FIG. 1. Optical format of the laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Tungstates tend to get higher Raman coefficients (�?Raman scattering). Thus, they could deliver sizeable Raman attain at moderate optical intensities. It is achievable to use the laser crystal alone as being a Raman converter.
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... Not simply the situation of crystal inside the cavity but additionally the amplification axis of crystal impacts the laser operation significantly, since the absorption and emission cross sections in the crystal are fairly unique according to the orientation on the crystal.
Though ytterbium-doped laser attain media generally exhibit a small quantum defect, ytterbium-doped tungstates allow for for especially modest values. One example is, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW can be most successfully pumped all-around 981 nm.
Li2WO4-WO3 flux was successfully used lessening the growth temperature below 900 oC. In line with single crystal x-ray measurements, the crystal corresponds into the P2/n space group.
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