Everything about KYW Crystal
Everything about KYW Crystal
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The comparison with glasses is acceptable since the big gain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We present a dual-crystal Yb:KGW laserthat iscapable to operate to be a Q-switched oscillator with output power as much as 24 W and pulse size of 20 ns,or like a regenerative amplifier with output electricity nearly 21 W and pulse duration below 200 fs after compression of chirped pulses. The two lasers have outstanding 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 direct longitudinal pumping by potent linear arrays of semiconductor injection lasers possessing fiber output. To stop spectral narrowing in the course of amplification as well as the corresponding lengthening on the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima with the amplification shifted relative to one another and with spectral profiling on the amplified radiation.
In advance of the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser obtain medium. It absolutely was in actual fact used in the initial repeatedly functioning crystal laser.
FIG. 1. Optical structure of the laser with direct pumping While using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Spatial structure from the beam as well as corresponding depth profiles I in the output of your laser.
For tungstates, the ytterbium doping concentration can be quite significant without the need of substantial quenching since the replaced ions have an incredibly very similar ion radius, and the click here inter-ion length is pretty large.
... Not merely the place of crystal within the cavity but additionally the amplification axis of crystal affects the laser Procedure enormously, as the absorption and emission cross sections on the crystal are very distinct according to the orientation of your crystal.
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Li2WO4-WO3 flux was efficiently used decreasing the growth temperature beneath 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds on the P2/n Place team.
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