KYW Crystal - An Overview
KYW Crystal - An Overview
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very big when compared with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values very well down below 100 fs have already been accomplished with passive mode locking.
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We present a dual-crystal Yb:KGW laserthat iscapable to work as a Q-switched oscillator with output energy as much as 24 W and pulse length of twenty ns,or to be a regenerative amplifier with output power around 21 W and pulse duration below two hundred fs immediately after compression of chirped pulses. Equally lasers have exceptional beam top quality with beam parameter M2
Coloration-coded reflectivity of the Bragg mirror as a functionality of wavelength and angle of the incident beam.
This paper describes a femtosecond laser regenerative amplifier based upon two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing all through amplification plus the corresponding lengthening on the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been used, While using the spectral maxima in the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
Following air drying and subsequent cleansing with a cotton cloth soaked in Liquor, the movie surface showed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are made use of as lasing elements to make ultrashort (~ 100-two hundred fs) large power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser methods.
five mm in addition to the middle on the beam caustic. As a way to Examine the manner matching simulation, we done the experiment with Ng-Reduce crystal oscillator, which was developed Earlier and in a exact affliction with simulation [11]. As demonstrated in Figure 3(b) with red dots and line, the CW output electricity is highly dependent on the place of laser crystal as well as experimental end result coincides well with simulation end result. As a Be aware, multimode Procedure happened in experiment when the measurement of your pump beam is bigger than TEM00 cavity method and it will cause higher CW output electrical power from the displacement location underneath 3.5 mm.
For tungstates, the ytterbium doping concentration can be quite superior without having major quenching as the replaced ions have an incredibly equivalent ion radius, and also the inter-ion distance is fairly substantial.
Superior-electrical power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical purposes
Although ytterbium-doped laser achieve media commonly show a small quantum defect, ytterbium-doped tungstates enable for notably modest values. By way of example, a 1030-nm Yb:YAG laser would Typically be pumped about 940 nm, whereas Yb:KGW or Yb:KYW can be most competently pumped all around 981 nm.
Li2WO4-WO3 flux was successfully applied lessening The expansion temperature below 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds to your P2/n House team.
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At the same time, a shorter laser wavelength is often acquired; it can be get more info done to function using a quantum defect nicely underneath 1%. For a consequence, the heat era can be so modest this partly compensates the reduced thermal conductivity.