KYW Crystal Secrets
KYW Crystal Secrets
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is very big in contrast with that of Yb:YAG. This permits for vast wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values nicely down below 100 fs have already been attained with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a exceptional product that plays a very important role in laser technological innovation. Its Principal operate is to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the heart beat
FIG. four. Autocorrelation function of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong active component for an output power of seven hundred mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW due to the equivalent measurements of those chemical components nearly 100% of Yb-doping may be reached. This distinctive characteristic permits ytterbium to go ahead and take place of yttrium with just about no disruption to your crystal’s lattice.
Adhesion Exam Compliant with MIL-C-675C armed forces standards, an adhesion take a look at concerned implementing a tape that satisfies LT-90 technical specs on to the lens film layer. The tape was affixed fully then taken off vertically. This course of action was performed thrice, resulting in no blistering or peeling.
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Tungstates have a tendency to get higher Raman coefficients (�?Raman scattering). Thus, they might deliver important Raman attain at reasonable optical intensities. It can be done to utilize the laser crystal itself for a Raman converter.
For tungstates, the ytterbium doping concentration can be extremely substantial without major quenching because the replaced ions have an exceptionally similar ion radius, as well as inter-ion distance is fairly substantial.
High-electric power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical apps
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This tandem of attributes has considerably-achieving implications, specially in the development of compact yet powerfull lasers.
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Concurrently, a shorter laser wavelength might be attained; it is feasible to work using a quantum defect properly under 1%. For a consequence, the warmth generation is often so tiny that this partly compensates the lower thermal conductivity.