New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This enables for wide wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values properly down below a hundred fs have been realized with passive manner locking.
The comparison with glasses is suitable Because the huge acquire bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a very regenerative amplifier by spectral profiling of the pulse
FIG. four. Autocorrelation functionality of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong active factor for an output power of seven hundred mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to the comparable sizes of these chemical factors approximately one hundred% of Yb-doping may very well be accomplished. This special characteristic permits ytterbium to take the place of yttrium with practically no disruption to your crystal’s lattice.
Adhesion Exam Compliant with MIL-C-675C army expectations, an adhesion exam associated implementing a tape that satisfies LT-ninety technical specs on to the lens movie layer. The tape was affixed absolutely and then eliminated vertically. This method was carried out three times, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical attributes owing on the presence of thulium ions, and for that reason the products could be additional studied within the scope of laser and luminescence applications.
A higher brightnessQ-switched oscillator and regenerative amplifier according to a dual-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be extremely large without considerable quenching as the changed ions have an extremely identical ion radius, and also the inter-ion distance is fairly significant.
... Don't just the posture of crystal in the cavity but additionally the amplification axis of crystal impacts the laser operation greatly, because the absorption and emission cross sections of the crystal are quite distinctive in accordance with the orientation with the crystal.
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Li2WO4-WO3 flux was properly used decreasing the growth temperature underneath 900 oC. According to single crystal x-ray measurements, the crystal corresponds for the P2/n Place team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at home temperature had been get more info measured. The emission spectrum and life time of your three File four thrilled condition have been decided. Applying standard and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes had been calculated and excellent arrangement Together with the experimental effects was received for each theories.
Simultaneously, a shorter laser wavelength could be obtained; it is achievable to operate which has a quantum defect very well beneath one%. Like a consequence, the warmth generation is often so tiny this partly compensates the reduce thermal conductivity.