In practical terms, the Yb:KYW crystal has identified its area of interest in significant-ability laser applications resulting from its power to generate high Power ultrashort laser pulses although preserving a compact dimension. The interplay of its features �?seamless ytterbium substitution, potent absorption properties, ultrashort pulse era and efficiency in Strength conversion �?positions the Yb:KYW crystal to be a cornerstone from the laser know-how, covering numerous fields ranging from scientific research to industrial apps.

The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is a outstanding content that plays a crucial part in laser know-how. Its Key purpose would be to generate ultrashort pulses of light, spanning just a couple hundred femtoseconds.

We current a twin-crystal Yb:KGW laserthat iscapable to function as a Q-switched oscillator with output energy up to 24 W and pulse duration of 20 ns,or as being a regenerative amplifier with output energy as much as 21 W and pulse duration down below two hundred fs right after compression of chirped pulses. Each lasers have fantastic beam excellent with beam parameter M2

Color-coded reflectivity of the Bragg mirror for a purpose of wavelength and angle on the incident beam.

By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW mainly because of the comparable measurements of such chemical elements around one hundred% of Yb-doping may very well be obtained. This unique attribute permits ytterbium to go ahead and take place of yttrium with practically no disruption for the crystal’s lattice.

The monoclinic crystal buildings ends in a all-natural birefringence, helping to stay away from thermally induced polarization rotation and depolarization loss.

PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are used as lasing materials to deliver ultrashort (~ a hundred-two hundred fs) large electrical power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser programs.

5 mm other than the center from the beam caustic. As a way to Look at the manner matching simulation, we done the experiment with Ng-Minimize crystal oscillator, which was designed Formerly and in a exact affliction with simulation [11]. As shown in Determine 3(b) with pink dots and line, the CW output electricity is extremely depending on the situation of laser crystal as well as the experimental final result coincides effectively with simulation final result. As being a Observe, multimode operation transpired in experiment if the dimensions on the pump beam is more substantial than TEM00 cavity mode and it will cause increased CW output electric power within the displacement location underneath 3.5 mm.

For tungstates, the ytterbium doping concentration can be extremely higher devoid of considerable quenching since the changed ions have an extremely very similar ion radius, and also the inter-ion distance is fairly significant.

Nevertheless, the moment Nd3+:YAG turned commercially obtainable, the fascination in CaWO4 dropped sharply. In afterwards years, specified other tungstate crystals began to attract plenty of here interest.

The thermal conductivity of common double tungstates is of your purchase to three–4 W/(K m) �?which isn't undesirable in contrast with other laser crystals (although various instances fewer than for YAG), and relatively significant in contrast While using the thermal conductivity of common Eyeglasses.

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At the same time, a shorter laser wavelength is usually received; it is feasible to work by using a quantum defect effectively under 1%. To be a consequence, the heat technology might be so little this partly compensates the reduce thermal conductivity.