KYW Crystal - An Overview
KYW Crystal - An Overview
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW may be very substantial compared with that of Yb:YAG. This enables for huge wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values effectively down below one hundred fs are already realized with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is usually a impressive product that plays a significant function in laser know-how. Its primary operate should be to produce ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at around 981 nm makes the crystal well matched for diode pumping. It is actually further more Increased by its amazing performance in this process, coupled with its minimal quantum defect.
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Ultrafast lasers, with pulse widths of some picoseconds (ten−twelve s) or fewer, allow time resolution required in laser-fired up fluorescence lifetime spectroscopy and imaging techniques.Additionally, they supply substantial pulse peak powers at high repetition costs and average ordinary output powers.
Just after air drying and subsequent cleaning that has a cotton cloth soaked in Liquor, the movie area showed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are used as lasing components to create ultrashort (~ one hundred-200 fs) substantial electricity pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser programs.
five mm apart from the middle from the beam caustic. So as to Examine the manner matching simulation, we performed the experiment with Ng-Slice crystal oscillator, which was created Earlier As well as in a similar affliction with simulation [eleven]. As revealed in Figure 3(b) with pink dots and line, the CW output electrical power is very depending on the placement of laser crystal and the experimental end result coincides very well with simulation result. Like a Observe, multimode Procedure occurred in experiment once the dimensions of your pump beam is greater than TEM00 cavity method and it will cause higher CW output electrical power while in the displacement location down below three.five mm.
For tungstates, the ytterbium doping focus can be very high without the need of important quenching because the changed ions have an exceptionally equivalent ion radius, and also the inter-ion length is comparatively huge.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to very similar measurements of those chemical components up to a hundred% of Yb-doping may very well be reached.
The thermal conductivity of widespread double tungstates is in the order to three–4 W/(K m) �?which is not lousy in comparison with other laser crystals (Despite the fact that many instances lower than for YAG), and quite massive in contrast with the thermal conductivity of regular glasses.
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At the same time, a shorter laser wavelength could be received; it can be done to work having a quantum defect properly underneath one%. As a consequence, the heat generation could be so modest this partly compensates the lessen thermal conductivity.