Everything about KYW Crystal
Everything about KYW Crystal
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In functional terms, the Yb:KYW crystal has located its niche in large-energy laser programs resulting from its ability to create substantial Vitality ultrashort laser pulses while retaining a compact dimension. The interaction of its functions �?seamless ytterbium substitution, powerful absorption qualities, ultrashort pulse era and effectiveness in Strength conversion �?positions the Yb:KYW crystal as a cornerstone while in the laser technological know-how, covering numerous fields ranging from scientific investigation to industrial purposes.
This special characteristic of ultrafast pulses enables nonlinear optical interaction with tissue at reduced Total publicity, and drives applications including deep-tissue multiphoton microscopy and higher-precision eye surgical procedure
We existing a twin-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output energy approximately 24 W and pulse size of twenty ns,or as being a regenerative amplifier with output ability approximately 21 W and pulse duration underneath two hundred fs following compression of chirped pulses. Both equally lasers have fantastic beam quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Screen potent peaks at 980 nm and 1030 nm, respectively, guaranteeing effective Power conversion and significant general performance in laser systems.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW because of the equivalent measurements of these chemical aspects around one hundred% of Yb-doping could be realized. This special attribute permits ytterbium to go ahead and take area of yttrium with virtually no disruption on the crystal’s lattice.
The monoclinic crystal constructions ends in a purely natural birefringence, helping to stay away from thermally induced polarization rotation and depolarization reduction.
FIG. 1. Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial structure from the beam as well as the corresponding intensity profiles I within the output from the laser.
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... Not merely the placement of crystal during the cavity and also the amplification axis of crystal has an effect on the laser operation tremendously, as the absorption and emission cross sections from the crystal are fairly distinct according to the orientation on the crystal.
The thermal conductivity of widespread double tungstates is from the order to three–four W/(K m) �?which isn't poor as opposed with other laser crystals (Despite the fact that many periods fewer than for YAG), and reasonably huge in comparison Using the thermal conductivity of usual glasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is often a amazing materials that plays a crucial function in laser technology. Its Main perform click here should be to deliver ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
Simultaneously, a shorter laser wavelength is often attained; it is feasible to function with a quantum defect nicely beneath 1%. For a consequence, the heat technology could be so tiny this partly compensates the decreased thermal conductivity.