New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial as opposed with that of Yb:YAG. This allows for broad wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values well beneath one hundred fs are already obtained with passive method locking.
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The Yb:KYW crystal’s proficiency in gentle absorption at all over 981 nm would make the crystal like minded for diode pumping. It truly is even more enhanced by its outstanding effectiveness in this method, coupled with its lower quantum defect.
Colour-coded reflectivity of a Bragg mirror as being a function of wavelength and angle from the incident beam.
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers having fiber output. To prevent spectral narrowing during amplification as well as the corresponding lengthening of your amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals were used, With all the spectral maxima of the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
The monoclinic crystal buildings ends in a organic birefringence, assisting to keep away from thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are employed as lasing materials to generate ultrashort (~ one hundred-two hundred fs) high electricity pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser units.
A substantial brightnessQ-switched oscillator and regenerative amplifier dependant on a dual-crystal Yb:KGW laser
... at 50 %-peak were generated within a grasp oscillator with selfsynchronization with the axial modes, explained inside our before report. 21 The new version of your laser, as opposed to that explained within our previously short article, made use of an Yb:KYW crystal having an N pcut (optical axis N p of the index ellipsoid was parallel towards the propagation route with the laser radiation), Along with the polarization with the created radiation directed along the N m axis.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the equivalent sizes of these chemical factors around 100% of Yb-doping may be obtained.
Though ytterbium-doped laser obtain media commonly show a small quantum defect, ytterbium-doped tungstates allow for significantly compact values. For instance, a 1030-nm Yb:YAG laser would Generally be pumped all around 940 nm, While Yb:KGW or Yb:KYW could be most efficiently pumped all over 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature have been measured. The emission spectrum and life time with the 3 File 4 energized state have been determined. Employing standard and modified Judd–Ofelt theories, the intensity parameters get more info as well as radiative lifetimes have been calculated and superior agreement Along with the experimental outcomes was acquired for both equally theories.
Ask RP Photonics for virtually any advice concerning tungstate lasers, such as femtosecond lasers and superior-electric power lasers.