Considerations To Know About KYW Crystal
Considerations To Know About KYW Crystal
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In practical conditions, the Yb:KYW crystal has uncovered its area of interest in substantial-electric power laser programs as a result of its ability to crank out substantial Electricity ultrashort laser pulses although keeping a compact dimensions. The interaction of its features �?seamless ytterbium substitution, strong absorption features, ultrashort pulse era and effectiveness in Strength conversion �?positions the Yb:KYW crystal for a cornerstone in the laser know-how, masking varied fields starting from scientific exploration to industrial apps.
The comparison with Eyeglasses is acceptable Because the huge gain bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
We current a dual-crystal Yb:KGW laserthat iscapable to operate to be a Q-switched oscillator with output electrical power approximately 24 W and pulse size of 20 ns,or for a regenerative amplifier with output ability approximately 21 W and pulse length down below 200 fs soon after compression of chirped pulses. Both equally lasers have excellent beam excellent with beam parameter M2
FIG. four. Autocorrelation purpose of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active factor for an output electrical power of 700 mW. The width of
Optical format of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output on the radiation, WP is usually a half-wave plate, CL is often a collimating lens, FL is often a focusing lens, AE is really an Energetic factor made out of an Yb:KYW crystal, DM can be a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC is the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
The monoclinic crystal structures ends in a purely natural birefringence, assisting to avoid thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are applied as lasing products to deliver ultrashort (~ a hundred-two hundred fs) significant electric power here pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser systems.
Spatial composition in the beam as well as corresponding intensity profiles I for the output in the laser.
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the comparable dimensions of these chemical aspects approximately a hundred% of Yb-doping might be attained.
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Li2WO4-WO3 flux was successfully used lessening The expansion temperature down below 900 oC. According to one crystal x-ray measurements, the crystal corresponds for the P2/n Room team.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, can be a impressive materials that performs a significant part in laser know-how. Its Key perform should be to make ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
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