Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial in contrast with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values perfectly below 100 fs have already been realized with passive manner locking.
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We present a dual-crystal Yb:KGW laserthat iscapable to operate as a Q-switched oscillator with output electrical power approximately 24 W and pulse length of 20 ns,or as being a regenerative amplifier with output energy as much as 21 W and pulse duration down below two hundred fs immediately after compression of chirped pulses. Both lasers have excellent beam quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers possessing fiber output. To circumvent spectral narrowing for the duration of amplification along with the corresponding lengthening on the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were employed, Using the spectral maxima of your amplification shifted relative to each other and with spectral profiling of the amplified radiation.
In advance of the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser obtain medium. It was the truth is Employed in the very first repeatedly functioning crystal laser.
FIG. one. Optical format of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
5 mm in addition to the middle with the beam caustic. So as to Verify the mode matching simulation, we executed the experiment with Ng-Slice crystal oscillator, which was designed Formerly As well as in a very same problem with simulation [eleven]. As demonstrated in Figure three(b) with crimson dots and line, the CW output electrical power is very dependent on the place of laser crystal and also the experimental end result coincides effectively with simulation result. As being a Take note, multimode operation transpired in experiment when the measurement of your pump beam is more substantial than TEM00 cavity manner and it leads to increased CW output electric power within the displacement area underneath three.5 mm.
For tungstates, the ytterbium doping concentration can be extremely large without the need of important quenching as the replaced ions have an incredibly similar ion radius, along with the inter-ion length is relatively huge.
Nevertheless, once Nd3+:YAG grew to become commercially out there, the interest in CaWO4 dropped sharply. In later on yrs, certain other tungstate crystals started to draw in many attention.
The thermal conductivity of frequent double tungstates is from the get to 3–four W/(K m) �?which is not terrible in comparison with other laser crystals (Even though quite a few instances less than for YAG), and reasonably massive compared Together with the thermal conductivity of regular Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared with its counterpart Yb:KGW, is often a extraordinary product that performs a vital position in laser know-how. Its Key operate is always to produce ultrashort pulses of sunshine, more info spanning just a few hundred femtoseconds.
Talk to RP Photonics for just about any advice relating to tungstate lasers, which include femtosecond lasers and large-ability lasers.