The KYW Crystal Diaries
The KYW Crystal Diaries
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is very substantial in contrast with that of Yb:YAG. This allows for vast wavelength tunability and for Significantly shorter pulse durations from mode-locked lasers. Values effectively under 100 fs have already been obtained with passive mode locking.
This distinctive attribute of ultrafast pulses enables nonlinear optical interaction with tissue at low Over-all publicity, and drives programs for instance deep-tissue multiphoton microscopy and higher-precision eye operation
The Yb:KYW crystal’s proficiency in gentle absorption at all around 981 nm tends to make the crystal like minded for diode pumping. It really is even more enhanced by its extraordinary efficiency in this process, coupled with its minimal quantum defect.
Shade-coded reflectivity of the Bragg mirror as a function of wavelength and angle of your incident beam.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with immediate longitudinal pumping by highly effective linear arrays of semiconductor injection lasers acquiring fiber output. To forestall spectral narrowing in the course of amplification as well as corresponding lengthening in the amplified pulse when it can be compressed, a combination of two Yb:KYW crystals had been employed, While using the spectral maxima of the amplification shifted relative to each other and with spectral profiling in the amplified radiation.
In advance of the event of Nd:YAG, Nd3+:CaWO4 was a very important uncommon-earth-doped laser obtain medium. It was in actual fact Utilized in the main continuously running crystal laser.
FIG. one. Optical layout of the laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
A higher brightnessQ-switched oscillator and regenerative amplifier based upon a dual-crystal Yb:KGW laser
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... Not just the situation of crystal inside the cavity and also the amplification axis of crystal has an effect on the laser operation drastically, because the absorption and emission cross sections of your crystal are fairly diverse according to the orientation of your crystal.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison with its counterpart Yb:KGW, is often a exceptional content that plays an important job in laser technological know-how. Its Principal purpose will be to generate ultrashort pulses of light, spanning just some hundred femtoseconds.
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