The KYW Crystal Diaries
The KYW Crystal Diaries
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In sensible terms, the Yb:KYW crystal has discovered its area of interest in superior-energy laser programs on account of its capability to create large Power ultrashort laser pulses whilst maintaining a compact sizing. The interplay of its attributes �?seamless ytterbium substitution, strong absorption properties, ultrashort pulse era and effectiveness in Vitality conversion �?positions the Yb:KYW crystal like a cornerstone within the laser engineering, masking varied fields ranging from scientific analysis to industrial purposes.
This exceptional characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at low In general exposure, and drives purposes for instance deep-tissue multiphoton microscopy and substantial-precision eye surgical treatment
We present a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output electrical power approximately 24 W and pulse size of twenty ns,or for a regenerative amplifier with output ability nearly 21 W and pulse duration down below two hundred fs immediately after compression of chirped pulses. Both equally lasers have great beam good quality with beam parameter M2
FIG. 4. Autocorrelation operate of the pulse 共a兲and spectrum 共b兲of a laser with an oblong active aspect for an output energy of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals ended up employed, with the spectral maxima with the amplification shifted relative to each other and with spectral profiling from the amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a very important unusual-earth-doped laser attain medium. It was the truth is Employed in the very first continually functioning crystal laser.
FIG. one. Optical layout of the laser with direct pumping While using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
five mm other than the center of the beam caustic. In order to Verify the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was created Beforehand As well as in a exact same ailment with simulation [11]. As shown in Determine 3(b) with crimson dots and line, the CW output energy is extremely dependent on the situation of laser crystal and also the experimental final result coincides effectively with simulation final result. Being a Notice, multimode operation more info occurred in experiment if the size from the pump beam is bigger than TEM00 cavity method and it will cause larger CW output electric power within the displacement area down below 3.five mm.
For tungstates, the ytterbium doping focus can be quite superior without the need of sizeable quenching because the replaced ions have a very similar ion radius, plus the inter-ion length is pretty huge.
Superior-electrical power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical purposes
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at home temperature were measured. The emission spectrum and life time from the three F four thrilled condition were being identified. Utilizing conventional and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes were calculated and very good settlement Together with the experimental final results was obtained for each theories.
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