KYW Crystal Options
KYW Crystal Options
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW may be very significant in contrast with that of Yb:YAG. This permits for wide wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values properly beneath a hundred fs are achieved with passive manner locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to operate to be a Q-switched oscillator with output ability as many as 24 W and pulse length of twenty ns,or to be a regenerative amplifier with output energy as much as 21 W and pulse period below two hundred fs after compression of chirped pulses. Both equally lasers have superb beam quality with beam parameter M2
Colour-coded reflectivity of a Bragg mirror like a operate of wavelength and angle from the incident beam.
Optical structure of the laser with direct pumping With all the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output on the radiation, WP is often a 50 percent-wave plate, CL can be a collimating lens, FL is actually a concentrating lens, AE is an Lively aspect constructed from an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC is the output mirror, and SAM is a semiconductor saturable-absorber mirror.
The monoclinic crystal structures brings about a pure birefringence, helping to stay away from thermally induced polarization rotation and depolarization decline.
Raman, luminescence and transmission spectra reveal optical functions owing towards the existence of thulium ions, and for that reason the products may be further more studied from the scope of laser and luminescence applications.
five mm besides the center from the beam caustic. To be able to check the manner matching simulation, we done the experiment with Ng-Slice crystal oscillator, which was made Beforehand and in a exact issue with simulation [11]. As revealed in Figure three(b) with red dots and line, the CW output power is very dependent on the situation of laser crystal along with the experimental result coincides perfectly with simulation end result. As a Observe, multimode Procedure happened in experiment if the dimensions of your pump beam is much larger than TEM00 cavity method and it leads to bigger CW output energy inside the displacement location below 3.five mm.
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... Not merely the situation of crystal in the cavity and also the amplification axis of crystal impacts the laser operation drastically, because the absorption and emission cross sections in the crystal are fairly different according to the orientation from the crystal.
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Li2WO4-WO3 flux was effectively utilized decreasing The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds for the P2/n Area group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature had been measured. The emission spectrum and lifetime in the three F four thrilled state ended up established. Utilizing conventional and modified Judd–Ofelt theories, the intensity read more parameters and the radiative lifetimes ended up calculated and superior agreement With all the experimental success was obtained for both theories.
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