The Greatest Guide To KYW Crystal
The Greatest Guide To KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly substantial when compared with that of Yb:YAG. This permits for huge wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values properly below 100 fs happen to be attained with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is actually a extraordinary substance that plays an essential function in laser technological know-how. Its Principal functionality is always to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
We existing a twin-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output energy up to 24 W and pulse length of 20 ns,or being a regenerative amplifier with output ability nearly 21 W and pulse period underneath two hundred fs following compression of chirped pulses. Both equally lasers have exceptional beam quality with beam parameter M2
Coloration-coded reflectivity of a Bragg mirror like a function of wavelength and angle of your incident beam.
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by strong linear arrays of semiconductor injection lasers getting fiber output. To forestall spectral narrowing through amplification along with the corresponding lengthening of the amplified pulse when it is compressed, a mix of two Yb:KYW crystals have been utilized, While using the spectral maxima in the amplification shifted relative to each other and with spectral profiling of your amplified radiation.
The monoclinic crystal buildings leads to a organic birefringence, helping to prevent thermally induced polarization rotation and depolarization loss.
FIG. 1. Optical format of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial composition of the beam along with the corresponding depth profiles I on the output on the laser.
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By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to the similar sizes of those chemical aspects up to one hundred% of Yb-doping may very well be realized.
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