New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly significant compared with that of Yb:YAG. This enables for wide wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values properly below 100 fs are reached with passive manner locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is a extraordinary product that performs a very important part in laser technological know-how. Its Principal perform is usually to deliver ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in gentle absorption at all over 981 nm makes the crystal like minded for diode pumping. It is more enhanced by its impressive performance in this process, coupled with its lower quantum defect.
FIG. 4. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with an oblong Energetic component for an output energy of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers getting fiber output. To avoid spectral narrowing through amplification as well as corresponding lengthening on the amplified pulse when it is actually compressed, a mix of two Yb:KYW crystals were made use of, While using the spectral maxima of your amplification shifted relative to each other and with spectral profiling from the amplified radiation.
Adhesion Test Compliant with MIL-C-675C army requirements, an adhesion test involved implementing a tape that fulfills LT-90 requirements on to the lens movie layer. The tape was affixed thoroughly then taken out vertically. This method was carried out 3 times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical features owing to the existence of thulium ions, and for that reason the products could possibly be even further analyzed from the scope of laser and luminescence applications.
5 mm besides the center with the beam caustic. So as to check the manner matching simulation, we performed the experiment with Ng-Reduce crystal oscillator, read more which was developed Beforehand and in a same condition with simulation [eleven]. As revealed in Figure three(b) with purple dots and line, the CW output electricity is extremely dependent on the posture of laser crystal as well as experimental end result coincides very well with simulation end result. As being a Be aware, multimode operation happened in experiment when the dimensions from the pump beam is larger sized than TEM00 cavity mode and it results in better CW output energy from the displacement region beneath three.five mm.
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW because of the comparable sizes of such chemical things approximately a hundred% of Yb-doping can be realized.
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Li2WO4-WO3 flux was correctly applied minimizing the growth temperature down below 900 oC. Based on solitary crystal x-ray measurements, the crystal corresponds to your P2/n House group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is really a outstanding materials that plays a very important job in laser technological know-how. Its Most important functionality will be to generate ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
Concurrently, a shorter laser wavelength could be obtained; it is achievable to operate having a quantum defect nicely underneath one%. Being a consequence, the heat era may be so compact this partly compensates the lower thermal conductivity.