New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very huge in comparison with that of Yb:YAG. This allows for extensive wavelength tunability and for A lot shorter pulse durations from mode-locked lasers. Values properly underneath a hundred fs happen to be attained with passive manner locking.
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We existing a dual-crystal Yb:KGW laserthat iscapable to function as a Q-switched oscillator with output electric power as many as 24 W and pulse duration of twenty ns,or like a regenerative amplifier with output electricity up to 21 W and pulse duration under 200 fs just after compression of chirped pulses. Each lasers have excellent beam top quality with beam parameter M2
Colour-coded reflectivity of the Bragg mirror for a functionality of wavelength and angle on the incident beam.
Optical layout 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 from the radiation, WP is a 50 %-wave plate, CL can be a collimating lens, FL is really a focusing lens, AE is undoubtedly an Energetic component produced from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC is definitely the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
Immediately after air drying and subsequent cleaning using a cotton cloth soaked in Alcoholic beverages, the movie surface showed no indications of peeling or scratches.
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Tungstates are likely to obtain superior Raman coefficients (�?Raman scattering). Therefore, they're able to create sizeable Raman get at moderate optical intensities. It can be done to utilize the laser crystal by itself like a Raman converter.
... at fifty percent-height ended up generated in a grasp oscillator with selfsynchronization from the axial modes, explained in our before posting. 21 The new version of the laser, not like that explained within our before post, applied an Yb:KYW crystal with the N pcut (optical axis N p with the index ellipsoid was parallel towards the propagation course of the laser radiation), Along with the polarization of the generated radiation directed alongside the N m axis.
... Not only the situation of crystal while in the cavity but additionally the amplification axis of crystal impacts the laser Procedure tremendously, since the absorption and emission cross sections on the crystal are pretty diverse in accordance with the orientation of the crystal.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were being measured. The KYW Crystal emission spectrum and lifetime in the 3 F 4 fired up condition have been decided. Applying standard and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes were being calculated and good settlement with the experimental benefits was received for each theories.
Simultaneously, a shorter laser wavelength may be attained; it is achievable to operate with a quantum defect perfectly down below 1%. Being a consequence, the heat technology might be so little this partly compensates the reduced thermal conductivity.