Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is often a outstanding material that plays a very important purpose in laser technological innovation. Its Key operate is usually to produce ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at all around 981 nm makes the crystal well matched for diode pumping. It can be more Increased by its outstanding effectiveness in this method, coupled with its small quantum defect.
FIG. 4. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output electricity of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing during amplification as well as corresponding lengthening with the amplified pulse when it really is compressed, a combination of two Yb:KYW crystals ended up employed, with the spectral maxima on the amplification shifted relative to one another and with spectral profiling of the amplified radiation.
Just after air drying and subsequent cleaning that has a cotton cloth soaked in Liquor, the movie surface showed no indications of peeling or scratches.
FIG. one. Optical structure of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
5 mm besides the center of your beam caustic. So as to check the manner matching simulation, we executed the experiment with Ng-cut crystal oscillator, which was made previously As well as in a exact affliction with simulation [11]. As revealed in Figure 3(b) with pink dots and line, the CW output electricity is extremely dependent on the placement of laser crystal as well as experimental result coincides very well with simulation consequence. As a Be aware, multimode operation occurred in experiment when the dimension with the pump beam is greater than TEM00 cavity method and it results in greater CW output electrical power from the displacement region underneath 3.5 mm.
For tungstates, the ytterbium doping concentration can be very superior without substantial quenching since the replaced ions have an exceptionally similar ion radius, and also the inter-ion distance is comparatively big.
On the other hand, at the time Nd3+:YAG turned commercially available, the interest in CaWO4 dropped sharply. In later many years, sure other tungstate crystals began to attract a lot of notice.
The thermal conductivity of typical double tungstates is of your purchase to 3–four W/(K m) �?which isn't undesirable compared with other laser crystals (although many times a lot less than for YAG), and pretty substantial compared Together with the thermal conductivity of usual glasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is a impressive content that plays an essential role in laser technology. Its primary purpose is to deliver ultrashort pulses of light, spanning just a few hundred femtoseconds.
Inquire RP Photonics for virtually any suggestions about tungstate lasers, like femtosecond lasers and higher-electric power lasers.