Top KYW Crystal Secrets
Top KYW Crystal Secrets
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We existing a dual-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output ability up to 24 W and pulse length of twenty ns,or for a regenerative amplifier with output electricity as many as 21 W and pulse length beneath 200 fs right after compression of chirped pulses. Equally lasers have fantastic beam excellent with beam parameter M2
FIG. 4. Autocorrelation operate of the heartbeat 共a兲and spectrum 共b兲of a laser with a rectangular Lively element for an output electricity of 700 mW. The width of
Optical format of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output in the radiation, WP is really a half-wave plate, CL is a collimating lens, FL is often a focusing lens, AE is undoubtedly an Lively element created from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC would be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Prior to the development of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser acquire medium. It had been in reality Employed in the first constantly running crystal laser.
FIG. one. Optical format of a laser with direct pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
Tungstates have a tendency to own significant Raman coefficients (�?Raman scattering). Hence, they can produce substantial Raman obtain at moderate optical intensities. It is feasible to use the laser crystal itself as being a Raman converter.
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Significant-ability repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical applications
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at home temperature click here ended up measured. The emission spectrum and lifetime in the three F four excited point out were being identified. Employing conventional and modified Judd–Ofelt theories, the depth parameters along with the radiative lifetimes have been calculated and great agreement with the experimental final results was attained for both equally theories.
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