Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The comparison with glasses is appropriate since the large attain bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals from the compound melts congruently at 1007 oC, nonetheless melt crystallization of high quality crystal is extremely hard resulting from stage transition at ~920 oC. The top seeded Remedy method from
Colour-coded reflectivity of the Bragg mirror as a functionality of wavelength and angle from the incident beam.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW as a result of identical dimensions of such chemical components approximately a hundred% of Yb-doping could possibly be attained. This one of a kind attribute permits ytterbium to take the position of yttrium with virtually no disruption for the crystal’s lattice.
Adhesion Check Compliant with MIL-C-675C military services expectations, an adhesion exam involved making use of a tape that fulfills LT-90 specs onto the lens movie layer. The tape was affixed absolutely and after that taken out vertically. This course of action was executed three times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical features owing on the existence of thulium ions, and thus the elements could be even more examined within the scope of laser and luminescence programs.
five mm apart from the center from the beam caustic. In an effort to Test the manner matching simulation, we performed the experiment with Ng-Reduce crystal oscillator, which was produced Formerly and in a same situation with simulation [11]. As here revealed in Determine 3(b) with pink dots and line, the CW output electric power is extremely dependent on the placement of laser crystal as well as experimental consequence coincides nicely with simulation result. For a Be aware, multimode Procedure occurred in experiment in the event the measurement of the pump beam is larger sized than TEM00 cavity method and it causes increased CW output energy from the displacement location beneath three.five mm.
... at fifty percent-top had been created within a grasp oscillator with selfsynchronization of your axial modes, described inside our before article. 21 The new version in the laser, as opposed to that described in our previously write-up, utilized an Yb:KYW crystal with an N pcut (optical axis N p from the index ellipsoid was parallel to the propagation way from the laser radiation), While using the polarization with the generated radiation directed alongside the N m axis.
... Not just the posture of crystal in the cavity but in addition the amplification axis of crystal influences the laser Procedure greatly, since the absorption and emission cross sections with the crystal are really different based on the orientation of the crystal.
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This tandem of characteristics has significantly-achieving implications, notably in the construction of compact still powerfull lasers.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, is usually a outstanding content that plays a significant function in laser technological know-how. Its Most important perform is usually to deliver ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
At the same time, a shorter laser wavelength may be obtained; it is possible to operate by using a quantum defect properly down below one%. As being a consequence, the warmth generation is often so smaller that this partly compensates the reduce thermal conductivity.