KYW Crystal Secrets
KYW Crystal Secrets
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The Yb:KYW crystal’s proficiency in light-weight absorption at all-around 981 nm makes the crystal well suited for diode pumping. It's even further Increased by its amazing effectiveness in this process, coupled with its low quantum defect.
FIG. four. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic component for an output energy of seven hundred mW. The width of
Optical format of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is a 50 %-wave plate, CL is often a collimating lens, FL is a focusing lens, AE is surely an active ingredient constructed from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC would be the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C army specifications, an adhesion check concerned applying a tape that meets LT-ninety specifications on to the lens film layer. The tape was affixed fully after which you can taken out vertically. This method was executed 3 times, leading to no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical features owing towards the existence of thulium ions, and therefore the products could be further examined from the scope of laser and luminescence apps.
A large brightnessQ-switched oscillator and regenerative amplifier according to a twin-crystal Yb:KGW laser
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... Not just the posture of crystal within the cavity but in addition the amplification website axis of crystal influences the laser Procedure tremendously, as the absorption and emission cross sections in the crystal are quite different according to the orientation of the crystal.
Even though ytterbium-doped laser achieve media normally exhibit a little quantum defect, ytterbium-doped tungstates let for significantly compact values. One example is, a 1030-nm Yb:YAG laser would normally be pumped all over 940 nm, whereas Yb:KGW or Yb:KYW can be most competently pumped all-around 981 nm.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, can be a extraordinary product that performs an important role in laser technologies. Its Main purpose is always to make ultrashort pulses of light, spanning just some hundred femtoseconds.
Concurrently, a shorter laser wavelength may be received; it is feasible to operate which has a quantum defect very well underneath 1%. For a consequence, the heat generation may be so tiny that this partly compensates the decrease thermal conductivity.