Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is usually a impressive content that plays a significant role in laser technological innovation. Its Most important operate would be to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
time. Crystals with the compound melts congruently at 1007 oC, having said that melt crystallization of top of the range crystal is not possible due to stage transition at ~920 oC. The top seeded Alternative method from
The absorption and emission spectra of Yb:KYW Crystals Exhibit sturdy peaks at 980 nm and 1030 nm, respectively, making certain productive energy conversion and superior general performance in laser systems.
This paper describes a femtosecond laser regenerative amplifier dependant on two Yb:KYW crystals with direct longitudinal pumping by impressive linear arrays of semiconductor injection lasers owning fiber output. To avoid spectral narrowing throughout amplification plus the corresponding lengthening in the amplified pulse when it can be compressed, a mix of two Yb:KYW crystals have been employed, Using the spectral maxima on the amplification shifted relative to one another and with spectral profiling of your amplified radiation.
Adhesion Take a look at Compliant with MIL-C-675C armed forces standards, an adhesion take a look at involved making use of a tape that meets LT-90 requirements on to the lens movie layer. The tape was affixed totally and then removed vertically. This course of action was done three times, resulting in no blistering or peeling.
FIG. one. Optical format of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
Spatial structure in the beam and the corresponding intensity profiles I with the output of the laser.
For tungstates, the ytterbium doping concentration can be very superior without the need of substantial quenching as the replaced ions have an exceedingly similar ion radius, as well as inter-ion length is comparatively massive.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the comparable measurements of such chemical things nearly one hundred% of Yb-doping can be obtained.
The thermal conductivity of popular double tungstates is on the get to three–4 W/(K m) �?which is not terrible in contrast with other laser crystals website (Even though various times below for YAG), and rather substantial in comparison Using the thermal conductivity of common Eyeglasses.
Li2WO4-WO3 flux was effectively used reducing the growth temperature underneath 900 oC. According to solitary crystal x-ray measurements, the crystal corresponds to the P2/n Room team.
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Check with RP Photonics for just about any tips relating to tungstate lasers, including femtosecond lasers and superior-energy lasers.