The 5-Second Trick For KYW Crystal
The 5-Second Trick For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a amazing content that plays a crucial position in laser know-how. Its Most important functionality should be to crank out ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
We current a twin-crystal Yb:KGW laserthat iscapable to work to be a Q-switched oscillator with output energy as much as 24 W and pulse duration of twenty ns,or like a regenerative amplifier with output ability around 21 W and pulse duration beneath two hundred fs just after compression of chirped pulses. Both equally lasers have exceptional beam good quality with beam parameter M2
Colour-coded reflectivity of a Bragg mirror like a purpose of wavelength and angle of your incident beam.
Optical format of a laser with direct pumping with the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output of your radiation, WP is usually a half-wave plate, CL is often a collimating lens, FL is a concentrating lens, AE is undoubtedly an Energetic element created from an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC could be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
The monoclinic crystal structures brings about a purely natural birefringence, assisting to keep away from thermally induced polarization rotation and depolarization decline.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are employed as lasing products to create ultrashort (~ a hundred-200 fs) higher ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
Tungstates tend to get substantial Raman coefficients (�?Raman scattering). Thus, they could deliver significant Raman acquire at moderate optical intensities. It is feasible to utilize the laser crystal alone to be a Raman converter.
For tungstates, the ytterbium doping focus can be extremely large without the need of considerable quenching since the changed ions have a really related ion radius, and the inter-ion distance is comparatively massive.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the similar dimensions of those chemical components up to a hundred% of Yb-doping could be accomplished.
The thermal conductivity of common double tungstates is with the order to three–4 W/(K m) �?which is not lousy in comparison with other laser crystals (Even though several periods lower than for YAG), and rather large in comparison with the thermal conductivity of standard Eyeglasses.
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The polarized click here absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature were being measured. The emission spectrum and life time of the three File four enthusiastic condition have been established. Making use of normal and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes had been calculated and superior agreement Together with the experimental final results was attained for both theories.
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