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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, is a remarkable material that performs an important position in laser technology. Its primary perform should be to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.

We existing a dual-crystal Yb:KGW laserthat iscapable to work being a Q-switched oscillator with output electricity up to 24 W and pulse length of twenty ns,or like a regenerative amplifier with output ability around 21 W and pulse period underneath 200 fs right after compression of chirped pulses. Both of those lasers have excellent beam excellent with beam parameter M2

FIG. four. Autocorrelation functionality of the heart beat 共a兲and spectrum 共b兲of the laser with a rectangular active ingredient for an output electrical power of 700 mW. The width of

Optical format of a laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output with the radiation, WP is often a fifty percent-wave plate, CL is a collimating lens, FL is usually a focusing lens, AE is definitely an Lively component made from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC is the output mirror, and SAM is often a semiconductor saturable-absorber mirror.

Adhesion Test Compliant with MIL-C-675C armed forces criteria, an adhesion test included applying a tape that meets LT-ninety technical specs onto the lens film layer. The tape was affixed completely after which eradicated vertically. This treatment was done three times, resulting in no blistering or peeling.

Raman, luminescence and transmission spectra reveal optical options owing for the presence of thulium ions, and for that reason the supplies may be further more studied in the scope of laser and luminescence applications.

Spatial framework with the beam and the corresponding intensity profiles I in the output from the laser.

For tungstates, the ytterbium doping concentration can be quite large without major quenching because the changed ions have website a really very similar ion radius, as well as the inter-ion distance is fairly big.

... Not simply the situation of crystal in the cavity but additionally the amplification axis of crystal impacts the laser operation drastically, as the absorption and emission cross sections with the crystal are quite various according to the orientation of the crystal.

The thermal conductivity of common double tungstates is of your order to 3–4 W/(K m) �?which isn't bad when compared with other laser crystals (Despite the fact that a number of situations under for YAG), and pretty huge in contrast While using the thermal conductivity of normal glasses.

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At the same time, a shorter laser wavelength is often received; it is achievable to function with a quantum defect nicely down below 1%. To be a consequence, the warmth generation could be so small that this partly compensates the lessen thermal conductivity.