KYW Crystal No Further a Mystery
KYW Crystal No Further a Mystery
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Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in a very regenerative amplifier by spectral profiling of the heart beat
FIG. 4. Autocorrelation purpose of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output electricity of seven-hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers having fiber output. To circumvent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima with the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Right before the development of Nd:YAG, Nd3+:CaWO4 was an important exceptional-earth-doped laser acquire medium. It had been in fact Utilized in the 1st consistently operating crystal laser.
FIG. one. Optical layout of the laser with direct pumping Along with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
5 mm apart from the middle with the beam caustic. So as to Check out the mode matching simulation, we executed the experiment with Ng-Slice crystal oscillator, which was designed previously As well as in a identical situation with simulation [eleven]. As proven in Determine three(b) click here with red dots and line, the CW output power is very dependent on the posture of laser crystal along with the experimental result coincides very well with simulation result. Being a note, multimode operation transpired in experiment in the event the measurement with the pump beam is bigger than TEM00 cavity method and it results in greater CW output electrical power from the displacement region under 3.five mm.
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... Not merely the position of crystal during the cavity but additionally the amplification axis of crystal affects the laser Procedure considerably, since the absorption and emission cross sections from the crystal are quite unique based on the orientation of the crystal.
The thermal conductivity of typical double tungstates is with the order to three–four W/(K m) �?which is not undesirable as opposed with other laser crystals (Though various times under for YAG), and rather large in contrast Together with the thermal conductivity of regular Eyeglasses.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) compared to its counterpart Yb:KGW, is a remarkable product that performs a vital purpose in laser know-how. Its Principal perform would be to deliver ultrashort pulses of light, spanning just a few hundred femtoseconds.
Talk to RP Photonics for almost any guidance concerning tungstate lasers, together with femtosecond lasers and substantial-energy lasers.