How KYW Crystal can Save You Time, Stress, and Money.
How KYW Crystal can Save You Time, Stress, and Money.
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is really a extraordinary content that performs an essential position in laser technologies. Its primary operate is to create ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
We present a twin-crystal Yb:KGW laserthat iscapable to operate as a Q-switched oscillator with output electrical power as much as 24 W and pulse size of twenty ns,or to be a regenerative amplifier with output power as much as 21 W and pulse duration under two hundred fs just after compression of chirped pulses. Equally lasers have great beam high quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers getting fiber output. To circumvent spectral narrowing for the duration of amplification and also the corresponding lengthening with the amplified pulse when it can be compressed, a mix of two Yb:KYW crystals ended up utilized, While using the spectral maxima with the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
The monoclinic crystal constructions leads to a normal birefringence, helping to keep away from thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are applied as lasing products to deliver ultrashort (~ a hundred-two hundred fs) significant ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser techniques.
Tungstates are likely to get substantial Raman coefficients (�?Raman scattering). Thus, they could deliver important Raman achieve at reasonable optical intensities. It can be done to use the laser crystal itself for a Raman converter.
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW as a result of identical sizes of such chemical elements as many as 100% of Yb-doping may be achieved.
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Li2WO4-WO3 flux was efficiently utilized lowering the growth temperature under 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n Room group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were measured. The emission spectrum and life span in the three F four excited condition were being established. Applying normal and modified Judd–Ofelt theories, the depth parameters and the radiative more info lifetimes have been calculated and superior agreement Along with the experimental outcomes was obtained for both equally theories.
Concurrently, a shorter laser wavelength can be obtained; it is feasible to function that has a quantum defect perfectly below 1%. Like a consequence, the heat era can be so compact that this partly compensates the reduced thermal conductivity.