Everything about KYW Crystal
Everything about KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly large in comparison with that of Yb:YAG. This enables for large wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values properly down below 100 fs have already been reached with passive method locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to work for a Q-switched oscillator with output energy approximately 24 W and pulse size of twenty ns,or like a regenerative amplifier with output electrical power nearly 21 W and pulse duration below two hundred fs just after compression of chirped pulses. Both of those lasers have great beam excellent with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with immediate longitudinal pumping by effective linear arrays of semiconductor injection lasers possessing fiber output. To stop spectral narrowing during amplification and the corresponding lengthening with the amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals were being utilised, with the spectral maxima on the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Just before the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser get medium. It absolutely was actually used in the initial consistently operating crystal laser.
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Spatial construction on the beam as well as the corresponding depth profiles I with the output from the laser.
For tungstates, the ytterbium doping concentration can be extremely higher devoid of major quenching since the changed ions have an exceedingly equivalent ion radius, as well as inter-ion length is relatively huge.
Large-ability repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical apps
Even though ytterbium-doped laser attain media generally show a little quantum defect, ytterbium-doped tungstates enable for notably smaller values. One example is, a 1030-nm Yb:YAG laser would Commonly be pumped all over 940 nm, While Yb:KGW or Yb:KYW could possibly be most proficiently pumped about 981 nm.
This tandem of attributes has significantly-achieving implications, especially in the development of compact nonetheless powerfull lasers.
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Simultaneously, a shorter laser wavelength may be attained; it is achievable to operate that has a quantum defect effectively below 1%. As a consequence, the heat technology could be so compact that this partly compensates the decreased thermal conductivity.