KYW Crystal Options
KYW Crystal Options
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is extremely huge in comparison with that of Yb:YAG. This permits for huge wavelength tunability and for Significantly shorter pulse durations from mode-locked lasers. Values effectively down below one hundred fs are already reached with passive manner locking.
This special attribute of ultrafast pulses allows nonlinear optical conversation with tissue at minimal All round publicity, and drives programs which include deep-tissue multiphoton microscopy and significant-precision eye surgical procedure
We existing a dual-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output energy up to 24 W and pulse length of 20 ns,or to be a regenerative amplifier with output power as much as 21 W and pulse length under two hundred fs right after compression of chirped pulses. The two lasers have fantastic beam good quality with beam parameter M2
FIG. four. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with an oblong Lively factor for an output electrical power of seven hundred mW. The width of
Optical structure of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output with the radiation, WP is often a 50 %-wave plate, CL is often a collimating lens, FL is often a concentrating lens, AE is surely an active component produced from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC is definitely the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
In advance of the event of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser gain medium. It was the truth is Employed in the very first continually running crystal laser.
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Spatial framework of your beam as well as the corresponding intensity profiles I with the output from the laser.
For tungstates, the ytterbium doping concentration can be very higher devoid of sizeable quenching because the replaced ions have an extremely comparable ion radius, plus the inter-ion distance is fairly significant.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the comparable measurements of those chemical factors up to 100% of Yb-doping may very well be accomplished.
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This tandem of attributes has significantly-achieving implications, particularly in the construction of compact however powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature were calculated. The emission spectrum and life time with the three File four energized point out ended up identified. Employing standard and modified Judd–Ofelt theories, the intensity parameters along with the radiative lifetimes were being calculated and very good agreement Together with the experimental outcomes was attained for equally theories.
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