5 Tips about KYW Crystal You Can Use Today
5 Tips about KYW Crystal You Can Use Today
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The comparison with Eyeglasses is suitable For the reason that significant attain bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We present a dual-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output energy around 24 W and pulse length of twenty ns,or to be a regenerative amplifier with output electrical power up to 21 W and pulse length under 200 fs soon after compression of chirped pulses. Both of those lasers have superb beam high quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with immediate longitudinal pumping by powerful linear arrays of semiconductor injection lasers having fiber output. To prevent spectral narrowing in the course of amplification along with the corresponding lengthening with the amplified pulse when it's compressed, a combination of two Yb:KYW crystals were used, While using the spectral maxima of your amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Right before the event of Nd:YAG, Nd3+:CaWO4 was a very important scarce-earth-doped laser get medium. It had been actually Employed in the initial continuously functioning crystal laser.
FIG. one. Optical format of a laser with direct pumping With all the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Tungstates are inclined to obtain substantial Raman coefficients (�?Raman scattering). For that reason, they can produce significant Raman gain at moderate optical intensities. It is possible to use the laser crystal by itself for a Raman converter.
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the similar dimensions of such chemical aspects around 100% of Yb-doping might be achieved.
The thermal conductivity of common double tungstates is of your buy to 3–4 W/(K m) �?which isn't undesirable in contrast with other laser crystals (although quite a few periods under for YAG), and pretty significant when compared with the thermal conductivity of normal glasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is usually a extraordinary substance that plays a crucial function in laser engineering. Its Main function should be to crank out ultrashort pulses of light, spanning just a few hundred femtoseconds.
Concurrently, a shorter laser wavelength is usually obtained; it is feasible to function by using a quantum defect very well down below one%. As a consequence, the heat generation may be so tiny that this partly compensates the reduced thermal conductivity.