Top KYW Crystal Secrets
Top KYW Crystal Secrets
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In useful terms, the Yb:KYW crystal has found its specialized niche in significant-electricity laser purposes as a result of its capacity to produce superior Electricity ultrashort laser pulses although sustaining a compact size. The interaction of its functions �?seamless ytterbium substitution, strong absorption features, ultrashort pulse technology and effectiveness in Vitality conversion �?positions the Yb:KYW crystal as a cornerstone during the laser know-how, covering numerous fields ranging from scientific research to industrial apps.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is a exceptional substance that plays a crucial purpose in laser technology. Its Principal purpose should be to produce ultrashort pulses of light, spanning just a couple hundred femtoseconds.
We present a dual-crystal Yb:KGW laserthat iscapable to work for a Q-switched oscillator with output electricity approximately 24 W and pulse length of twenty ns,or for a regenerative amplifier with output electrical power up to 21 W and pulse period under two hundred fs soon after compression of chirped pulses. The two lasers have excellent beam top quality with beam parameter M2
FIG. 4. Autocorrelation operate of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular active factor for an output electrical power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers owning fiber output. To avoid spectral narrowing during amplification as well as corresponding lengthening of your amplified pulse when it's compressed, a combination of two Yb:KYW crystals have been made use of, with the spectral maxima of the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Adhesion Examination Compliant with MIL-C-675C armed service expectations, an adhesion examination involved implementing a tape that satisfies LT-90 specs on to the lens film layer. The tape was affixed totally then eradicated vertically. This procedure was performed three times, resulting in no blistering or peeling.
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five mm aside from the center on the beam caustic. So that you can check the manner matching simulation, we done the experiment with KYW Crystal Ng-Lower crystal oscillator, which was made Formerly As well as in a exact same affliction with simulation [11]. As demonstrated in Determine 3(b) with purple dots and line, the CW output power is extremely depending on the position of laser crystal plus the experimental result coincides properly with simulation final result. As being a Observe, multimode operation happened in experiment once the measurement of your pump beam is bigger than TEM00 cavity method and it brings about bigger CW output power inside the displacement location under 3.5 mm.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW a result of the comparable dimensions of those chemical factors as much as one hundred% of Yb-doping may very well be reached.
The thermal conductivity of typical double tungstates is of the get to 3–4 W/(K m) �?which isn't undesirable in comparison with other laser crystals (Even though several situations a lot less than for YAG), and relatively big as opposed Along with the thermal conductivity of standard Eyeglasses.
Li2WO4-WO3 flux was efficiently utilized decreasing the growth temperature under 900 oC. In keeping with one crystal x-ray measurements, the crystal corresponds to your P2/n Room team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were being calculated. The emission spectrum and life time of the three F four energized state ended up established. Working with typical and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes ended up calculated and good arrangement Together with the experimental success was received for both equally theories.
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