KYW Crystal Secrets
KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, can be a exceptional materials that plays an essential purpose in laser technology. Its Principal operate is usually to crank out ultrashort pulses of light, spanning only a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at around 981 nm can make the crystal compatible for diode pumping. It is more Improved by its exceptional effectiveness in this method, coupled with its very low quantum defect.
FIG. 4. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic element for an output ability of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with immediate longitudinal pumping by potent linear arrays of semiconductor injection lasers possessing fiber output. To stop spectral narrowing throughout amplification and also the corresponding lengthening of the amplified pulse when it can be compressed, a combination of two Yb:KYW crystals were made use of, While using the spectral maxima on the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
The monoclinic crystal buildings ends in a normal birefringence, helping click here to stay away from thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are applied as lasing resources to create ultrashort (~ 100-two hundred fs) large electrical power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser methods.
five mm besides the center from the beam caustic. To be able to check the mode matching simulation, we executed the experiment with Ng-Minimize crystal oscillator, which was produced previously As well as in a same ailment with simulation [11]. As shown in Figure three(b) with crimson dots and line, the CW output electric power is highly depending on the position of laser crystal as well as experimental end result coincides well with simulation end result. As a Observe, multimode operation occurred in experiment if the size in the pump beam is larger sized than TEM00 cavity mode and it brings about bigger CW output energy while in the displacement location down below three.five mm.
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... Not just the situation of crystal from the cavity but will also the amplification axis of crystal has an effect on the laser Procedure considerably, since the absorption and emission cross sections in the crystal are really distinct according to the orientation of the crystal.
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Check with RP Photonics for just about any information relating to tungstate lasers, which includes femtosecond lasers and high-energy lasers.