New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly large when compared with that of Yb:YAG. This permits for large wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values well below one hundred fs happen to be obtained with passive method locking.
This unique characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at very low All round exposure, and drives purposes including deep-tissue multiphoton microscopy and high-precision eye surgical procedure
We current a twin-crystal Yb:KGW laserthat iscapable to work as being a Q-switched oscillator with output electricity as many as 24 W and pulse duration of twenty ns,or for a regenerative amplifier with output power as much as 21 W and pulse duration beneath 200 fs following compression of chirped pulses. The two lasers have superb beam top quality with beam parameter M2
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active ingredient for an output electricity of 700 mW. The width of
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW a result of the identical sizes of these chemical factors as many as one hundred% of Yb-doping may very well be achieved. This distinctive characteristic permits ytterbium to take the place of yttrium with virtually no disruption to the crystal’s lattice.
Adhesion Exam Compliant with MIL-C-675C armed forces criteria, an adhesion test involved applying a tape that meets LT-90 specs onto the lens film layer. The tape was affixed totally after which taken off vertically. This technique was executed thrice, leading to no blistering or peeling.
FIG. one. Optical layout of the laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
5 mm aside from the center of the beam caustic. To be able to Verify the mode matching simulation, we executed the experiment with Ng-Slice crystal oscillator, which was formulated Earlier and in a same ailment with simulation [11]. As shown in Determine 3(b) with pink dots and line, the CW output power is very dependent on the position of laser crystal plus the experimental end result coincides nicely with simulation final result. Like a Take note, multimode operation happened in experiment when the dimensions of the pump beam is much larger than TEM00 cavity manner and it triggers better CW output energy from the displacement region below three.five mm.
... at 50 %-peak had been generated inside of a grasp oscillator with selfsynchronization in the axial modes, described inside our previously article. 21 The new edition in the laser, compared with that described read more in our previously article, applied an Yb:KYW crystal using an N pcut (optical axis N p of your index ellipsoid was parallel towards the propagation way on the laser radiation), With all the polarization of your produced radiation directed together the N m axis.
Even so, at the time Nd3+:YAG became commercially readily available, the interest in CaWO4 dropped sharply. In later decades, specific other tungstate crystals began to catch the attention of a lot of interest.
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Ask RP Photonics for virtually any advice regarding tungstate lasers, which include femtosecond lasers and substantial-power lasers.