New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The comparison with Eyeglasses is appropriate Because the substantial gain bandwidth enables e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in gentle absorption at all around 981 nm would make the crystal compatible for diode pumping. It can be more enhanced by its impressive efficiency in this method, coupled with its very low quantum defect.
FIG. 4. Autocorrelation purpose of the heartbeat 共a兲and spectrum 共b兲of a laser with a rectangular active factor for an output electricity of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers acquiring fiber output. To prevent spectral narrowing in the course of amplification as well as the corresponding lengthening of your amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals have been utilized, with the spectral maxima from the amplification shifted relative to each other and with spectral profiling on the amplified radiation.
Adhesion Exam Compliant with MIL-C-675C armed service standards, an adhesion get more info examination associated implementing a tape that meets LT-90 technical specs onto the lens movie layer. The tape was affixed totally and then removed vertically. This process was carried out 3 times, leading to no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical options owing to your presence of thulium ions, and as a consequence the materials may very well be more examined while in the scope of laser and luminescence applications.
A significant brightnessQ-switched oscillator and regenerative amplifier depending on a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can be very superior devoid of important quenching because the replaced ions have an extremely very similar ion radius, as well as inter-ion distance is relatively substantial.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW as a result of comparable sizes of such chemical features nearly a hundred% of Yb-doping can be realized.
The thermal conductivity of popular double tungstates is with the purchase to 3–four W/(K m) �?which is not negative compared with other laser crystals (Whilst various moments under for YAG), and fairly substantial when compared with the thermal conductivity of regular glasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared to its counterpart Yb:KGW, is really a outstanding content that performs an important role in laser technology. Its Main functionality is always to crank out ultrashort pulses of light, spanning just some hundred femtoseconds.
Concurrently, a shorter laser wavelength is often acquired; it is feasible to function having a quantum defect properly under one%. As being a consequence, the warmth technology may be so little that this partly compensates the decreased thermal conductivity.