Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is rather big as opposed with that of Yb:YAG. This enables for vast wavelength tunability and for Substantially shorter pulse durations from mode-locked lasers. Values very well underneath 100 fs are actually realized with passive mode locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to work as being a Q-switched oscillator with output electric power nearly 24 W and pulse duration of twenty ns,or being a regenerative amplifier with output electrical power as much as 21 W and pulse period underneath 200 fs following compression of chirped pulses. Both lasers have great beam good quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers acquiring fiber output. To stop spectral narrowing all through amplification along with the corresponding lengthening of the amplified pulse when it can be compressed, a mix of two Yb:KYW crystals were utilised, Using the spectral maxima with the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
The monoclinic crystal constructions results in a organic birefringence, helping to keep away from thermally induced polarization rotation and depolarization reduction.
FIG. 1. Optical layout of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
A significant brightnessQ-switched oscillator and regenerative amplifier depending on a twin-crystal Yb:KGW laser
... at fifty percent-height were produced in the learn oscillator with selfsynchronization on the axial modes, described within our previously report. 21 The new version of the laser, as opposed to that described inside our before posting, applied an Yb:KYW crystal having an N pcut (optical axis N p of your index ellipsoid was parallel for the propagation course of the laser radiation), While using the polarization of the produced radiation directed along the N m axis.
Nonetheless, as soon as Nd3+:YAG grew to become commercially available, the desire in CaWO4 dropped sharply. In later on a long time, certain other tungstate crystals began to appeal to many focus.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is often a amazing content that plays an important job in laser technology. Its Key operate is always to generate ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Request RP Photonics for any assistance regarding tungstate more info lasers, including femtosecond lasers and significant-energy lasers.