New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is very large when compared with that of Yb:YAG. This allows for extensive wavelength tunability and for Substantially shorter pulse durations from method-locked lasers. Values perfectly beneath 100 fs are actually accomplished with passive method locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is usually a impressive material that performs a very important job in laser technologies. Its Major operate is to crank out ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
We existing a dual-crystal Yb:KGW laserthat iscapable to operate being a Q-switched oscillator with output electricity nearly 24 W and pulse duration of 20 ns,or as being a regenerative amplifier with output electrical power as much as 21 W and pulse length under two hundred fs immediately after compression of chirped pulses. Equally lasers have excellent beam excellent with beam parameter M2
Colour-coded reflectivity of a Bragg mirror to be a functionality of wavelength and angle from the incident beam.
Optical structure of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output with the radiation, WP is often a fifty percent-wave plate, CL can be a collimating lens, FL can be a focusing lens, AE is really an Energetic factor made from an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC would be the output mirror, and SAM is really a semiconductor saturable-absorber mirror.
Adhesion Exam Compliant with MIL-C-675C armed forces expectations, an adhesion examination included implementing a tape that fulfills LT-90 specs onto the lens movie layer. The tape was affixed thoroughly and afterwards taken off vertically. This treatment was carried out three times, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical characteristics owing for the presence of thulium ions, and thus the materials may very well be further examined inside the scope of laser and luminescence purposes.
5 mm besides the center with the beam caustic. So read more as to check the mode matching simulation, we carried out the experiment with Ng-Lower crystal oscillator, which was formulated previously As well as in a identical ailment with simulation [eleven]. As shown in Figure three(b) with purple dots and line, the CW output electrical power is very dependent on the situation of laser crystal along with the experimental end result coincides well with simulation final result. For a Observe, multimode Procedure happened in experiment in the event the dimensions from the pump beam is larger than TEM00 cavity method and it brings about larger CW output electrical power while in the displacement area below 3.5 mm.
... at 50 percent-top had been created in a very grasp oscillator with selfsynchronization from the axial modes, explained inside our earlier post. 21 The new edition in the laser, compared with that explained within our earlier short article, used an Yb:KYW crystal having an N pcut (optical axis N p from the index ellipsoid was parallel to the propagation way from the laser radiation), With all the polarization of your created radiation directed along the N m axis.
However, when Nd3+:YAG became commercially accessible, the interest in CaWO4 dropped sharply. In later several years, specific other tungstate crystals started to entice a great deal of awareness.
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Li2WO4-WO3 flux was efficiently utilized decreasing The expansion temperature below 900 oC. In line with one crystal x-ray measurements, the crystal corresponds to your P2/n Room group.
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Simultaneously, a shorter laser wavelength is often obtained; it is feasible to function that has a quantum defect well beneath 1%. Being a consequence, the warmth technology is usually so little that this partly compensates the reduced thermal conductivity.