The smart Trick of KYW Crystal That Nobody is Discussing
The smart Trick of KYW Crystal That Nobody is Discussing
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is quite significant when compared with that of Yb:YAG. This enables for vast wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values nicely under 100 fs happen to be realized with passive method locking.
The comparison with Eyeglasses is appropriate since the big gain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We existing a dual-crystal Yb:KGW laserthat iscapable to operate being a Q-switched oscillator with output ability nearly 24 W and pulse size of twenty ns,or to be a regenerative amplifier with output electricity up to 21 W and pulse duration beneath 200 fs soon after compression of chirped pulses. Both lasers have excellent beam excellent with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals display potent peaks at 980 nm and 1030 nm, respectively, ensuring effective Power conversion and superior efficiency in laser units.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with immediate longitudinal pumping by powerful linear arrays of semiconductor injection lasers acquiring fiber output. To stop spectral narrowing throughout amplification along with the corresponding lengthening in the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals ended up utilized, Together with the spectral maxima on the amplification shifted relative to each other and with spectral profiling in the amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a vital unusual-earth-doped laser acquire medium. It had been in reality Utilized in the primary constantly running crystal laser.
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A high brightnessQ-switched oscillator and regenerative amplifier based upon a twin-crystal Yb:KGW laser
... at 50 percent-height ended up created in a very learn oscillator with selfsynchronization of your axial modes, explained within our earlier post. 21 The new version on the laser, in contrast to that described inside our before write-up, applied an Yb:KYW crystal with an N pcut (optical axis N p of your index ellipsoid was parallel to your propagation course in the laser radiation), Together with the polarization on the produced radiation directed along the N m axis.
Nonetheless, when Nd3+:YAG turned commercially out there, the curiosity in CaWO4 dropped sharply. In later several years, sure other tungstate crystals started to catch the attention of a great deal of attention.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature ended up measured. The emission spectrum and read more life time in the three F four fired up point out have been identified. Utilizing normal and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes were calculated and fantastic settlement With all the experimental effects was received for both equally theories.
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