The KYW Crystal Diaries
The KYW Crystal Diaries
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is very substantial when compared with that of Yb:YAG. This permits for wide wavelength tunability and for A great deal shorter pulse durations from method-locked lasers. Values well beneath a hundred fs are already achieved with passive manner locking.
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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 20 ns,or as being a regenerative amplifier with output electrical power around 21 W and pulse duration below two hundred fs immediately after compression of chirped pulses. Both equally lasers have great beam good quality with beam parameter M2
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with a rectangular Lively component for an output power of seven hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers acquiring fiber output. To forestall spectral narrowing for the duration of amplification along with the corresponding lengthening from the amplified pulse when it is compressed, a mix of two Yb:KYW crystals ended up utilised, With all the spectral maxima in the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a very important exceptional-earth-doped laser get medium. It was in truth used in the 1st continuously working crystal laser.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are utilized as lasing materials to deliver ultrashort (~ 100-200 fs) substantial electrical power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser methods.
A superior brightnessQ-switched oscillator and regenerative amplifier dependant on a twin-crystal Yb:KGW laser
... at fifty percent-top ended up produced inside a learn oscillator with selfsynchronization with the axial modes, described inside our previously write-up. 21 The new edition in the laser, in contrast to that explained in our before article, applied an Yb:KYW crystal with the N pcut (optical axis N p of your index ellipsoid was parallel on the propagation direction with the laser radiation), With all the polarization of your produced radiation directed alongside the N m axis.
... Not simply the situation of crystal during the cavity but also the amplification axis of crystal KYW Crystal affects the laser Procedure enormously, as the absorption and emission cross sections with the crystal are pretty diverse based on the orientation in the crystal.
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This tandem of attributes has considerably-achieving implications, specifically in the development of compact yet powerfull lasers.
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