The KYW Crystal Diaries
The KYW Crystal Diaries
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We existing a dual-crystal Yb:KGW laserthat iscapable to function like a Q-switched oscillator with output electric power as many as 24 W and pulse size of 20 ns,or like a regenerative amplifier with output electrical power around 21 W and pulse duration below two hundred fs just after compression of chirped pulses. Equally lasers have fantastic beam quality with beam parameter M2
Color-coded reflectivity of the Bragg mirror for a purpose of wavelength and angle of the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers owning fiber output. To circumvent spectral narrowing for the duration of amplification along with the corresponding lengthening in the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima on the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
Ahead of the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser achieve medium. It absolutely was actually Utilized in the 1st continuously operating crystal laser.
FIG. 1. Optical format of a laser with direct pumping with the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output
five mm other than the center of your beam caustic. So that you can Test the method matching simulation, we carried out the experiment with Ng-Minimize crystal oscillator, which was made previously and in a exact situation with simulation [11]. As proven in Determine 3(b) with purple dots and line, the CW output power is extremely depending on the place of laser crystal along with the experimental end result coincides effectively with simulation consequence. Like a Take note, multimode read more operation occurred in experiment once the dimensions of your pump beam is greater than TEM00 cavity method and it brings about better CW output electric power in the displacement area under three.five mm.
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... Don't just the posture of crystal in the cavity but also the amplification axis of crystal affects the laser Procedure enormously, as the absorption and emission cross sections with the crystal are very diverse based on the orientation of your crystal.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is a remarkable product that performs a vital part in laser engineering. Its Main functionality will be to create ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Inquire RP Photonics for virtually any suggestions about tungstate lasers, which includes femtosecond lasers and high-electricity lasers.