The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is quite big in comparison with that of Yb:YAG. This enables for huge wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values perfectly under a hundred fs have already been achieved with passive manner locking.

This unique characteristic of ultrafast pulses enables nonlinear optical conversation with tissue at reduced General publicity, and drives applications including deep-tissue multiphoton microscopy and substantial-precision eye surgery

We current a dual-crystal Yb:KGW laserthat iscapable to work to be a Q-switched oscillator with output electrical power as many as 24 W and pulse length of twenty ns,or as being a regenerative amplifier with output ability approximately 21 W and pulse period beneath two hundred fs right after compression of chirped pulses. Both equally lasers have excellent beam good quality with beam parameter M2

FIG. 4. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with an oblong active component for an output electrical power of seven-hundred mW. The width of

This paper describes a femtosecond laser regenerative amplifier according to two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing in the course of amplification and the corresponding lengthening on the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were applied, Together with the spectral maxima in the amplification shifted relative to each other and with spectral profiling from the amplified radiation.

The monoclinic crystal constructions leads to a normal birefringence, helping to avoid thermally induced polarization rotation and depolarization reduction.

PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and are utilised as lasing components to deliver ultrashort (~ 100-200 fs) substantial energy pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser techniques.

5 mm besides the center on the beam caustic. So that you can check the manner matching simulation, we done the experiment with Ng-Minimize crystal oscillator, which was produced previously As well as in a exact problem with simulation [eleven]. As proven in Figure 3(b) with pink dots and line, the CW output power is extremely depending on the position of laser crystal and also the experimental outcome website coincides properly with simulation final result. As a Observe, multimode operation happened in experiment once the dimension in the pump beam is larger than TEM00 cavity mode and it brings about higher CW output energy from the displacement region down below 3.five mm.

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Higher-ability repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical applications

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

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