KYW Crystal Options
KYW Crystal Options
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very large in comparison with that of Yb:YAG. This allows for vast wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values well beneath 100 fs have already been reached with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a impressive substance that plays a vital job in laser engineering. Its Main function should be to produce ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at all around 981 nm will make the crystal well suited for diode pumping. It really is even more Increased by its extraordinary performance in this method, coupled with its minimal quantum defect.
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Ultrafast lasers, with pulse widths of some picoseconds (10−12 s) or a lot less, empower enough time resolution necessary in laser-fired up fluorescence lifetime spectroscopy and imaging approaches.In addition, they deliver high pulse peak powers at high repetition rates and average regular output powers.
Prior to the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser achieve medium. It absolutely was actually Utilized in the 1st repeatedly functioning crystal laser.
FIG. one. Optical layout of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output
Tungstates have a tendency to get higher Raman coefficients (�?Raman scattering). Consequently, they are able to produce significant Raman attain at reasonable optical intensities. It is feasible to make use of the laser crystal itself as a Raman converter.
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... Not simply the placement of crystal inside the cavity but additionally the amplification axis of crystal affects the laser Procedure drastically, because the absorption and emission cross sections of your crystal are rather diverse based on the orientation on the crystal.
The thermal conductivity of common double tungstates is on the order to 3–four W/(K m) �?which isn't poor when compared with other laser crystals (Even though various times under for YAG), and rather large as opposed Together with the thermal conductivity of normal glasses.
Li2WO4-WO3 flux was correctly applied minimizing The expansion temperature below 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n space group.
The polarized check here absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were being calculated. The emission spectrum and lifetime with the three File four thrilled state have been decided. Working with conventional and modified Judd–Ofelt theories, the depth parameters and the radiative lifetimes were calculated and excellent agreement Using the experimental outcomes was obtained for both of those theories.
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