The gain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly huge in comparison with that of Yb:YAG. This permits for huge wavelength tunability and for A great deal shorter pulse durations from mode-locked lasers. Values nicely under one hundred fs are already attained with passive method locking.

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We present a twin-crystal Yb:KGW laserthat iscapable to operate to be a Q-switched oscillator with output energy up to 24 W and pulse length of 20 ns,or as being a regenerative amplifier with output power nearly 21 W and pulse duration under two hundred fs following compression of chirped pulses. Each lasers have exceptional beam quality with beam parameter M2

FIG. four. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with an oblong Lively factor for an output electric power of seven-hundred mW. The width of

This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers obtaining fiber output. To prevent spectral narrowing for the duration of amplification plus the corresponding lengthening from the amplified pulse when it is compressed, a mix of two Yb:KYW crystals were utilised, Using the spectral maxima in the amplification shifted relative to one another and with spectral profiling with the amplified radiation.

The monoclinic crystal structures ends in a pure birefringence, assisting to stay away from thermally induced polarization rotation and depolarization decline.

FIG. one. Optical layout of the laser with direct pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output

5 mm in addition to the center in the beam caustic. As a way to Check out the mode matching simulation, we carried out the experiment with Ng-Slice crystal oscillator, which was developed Earlier As well as in a identical ailment with simulation [11]. As shown in Figure 3(b) with red dots and line, the CW output energy is very dependent on the posture of click here laser crystal along with the experimental consequence coincides very well with simulation result. To be a Take note, multimode operation happened in experiment if the dimensions in the pump beam is larger than TEM00 cavity method and it leads to higher CW output electricity during the displacement area below three.5 mm.

For tungstates, the ytterbium doping focus can be quite high without important quenching as the changed ions have an extremely similar ion radius, plus the inter-ion distance is fairly huge.

Superior-power repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical purposes

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This tandem of characteristics has much-achieving implications, especially in the development of compact however powerfull lasers.

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