The Greatest Guide To KYW Crystal
The Greatest Guide To KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is extremely substantial compared with that of Yb:YAG. This allows for extensive wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values nicely beneath one hundred fs are already realized with passive mode locking.
This special attribute of ultrafast pulses allows nonlinear optical interaction with tissue at very low All round publicity, and drives apps like deep-tissue multiphoton microscopy and superior-precision eye medical procedures
time. Crystals of the compound melts congruently at 1007 oC, having said that soften crystallization of high quality crystal is unachievable resulting from stage changeover at ~920 oC. The top seeded Option approach from
Color-coded reflectivity of a Bragg mirror like a operate of wavelength and angle with the incident beam.
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers having fiber output. To prevent spectral narrowing during amplification as well as corresponding lengthening with the amplified pulse when it can be compressed, a combination of two Yb:KYW crystals were being utilised, With all the spectral maxima of the amplification shifted relative to each other and with spectral profiling of your amplified radiation.
Immediately after air drying and subsequent cleaning by using a cotton fabric soaked in alcohol, the movie area showed no signs of peeling or scratches.
FIG. one. Optical format of the laser with direct pumping While using the KYW Crystal radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
5 mm apart from the center from the beam caustic. As a way to Examine the mode matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was created Beforehand and in a same issue with simulation [11]. As demonstrated in Figure three(b) with pink dots and line, the CW output electric power is highly dependent on the position of laser crystal along with the experimental result coincides perfectly with simulation outcome. To be a Be aware, multimode operation happened in experiment when the dimension with the pump beam is larger than TEM00 cavity manner and it causes larger CW output electric power in the displacement region beneath 3.5 mm.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW mainly because of the very similar sizes of such chemical aspects as much as a hundred% of Yb-doping may be accomplished.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is usually a amazing substance that plays an essential role in laser technology. Its Key operate is always to deliver ultrashort pulses of light, spanning only a few hundred femtoseconds.
Concurrently, a shorter laser wavelength is often acquired; it can be done to function with a quantum defect very well beneath one%. As being a consequence, the warmth technology could be so small that this partly compensates the decreased thermal conductivity.