KYW Crystal - An Overview
KYW Crystal - An Overview
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In realistic phrases, the Yb:KYW crystal has discovered its area of interest in substantial-electric power laser purposes because of its capability to make significant energy ultrashort laser pulses when maintaining a compact measurement. The interplay of its functions �?seamless ytterbium substitution, sturdy absorption qualities, ultrashort pulse technology and efficiency in Electrical power conversion �?positions the Yb:KYW crystal as a cornerstone during the laser technologies, covering varied fields ranging from scientific analysis to industrial apps.
This exclusive characteristic of ultrafast pulses enables nonlinear optical interaction with tissue at reduced In general publicity, and drives apps including deep-tissue multiphoton microscopy and superior-precision eye surgical treatment
The Yb:KYW crystal’s proficiency in mild absorption at around 981 nm would make the crystal compatible for diode pumping. It truly is more enhanced by its remarkable effectiveness in this process, coupled with its lower quantum defect.
Color-coded reflectivity of a Bragg mirror for a purpose of wavelength and angle with the incident beam.
Optical structure of a laser with direct pumping With all the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output in the radiation, WP can be a 50 percent-wave plate, CL is often a collimating lens, FL is a focusing lens, AE is undoubtedly an Lively aspect produced from an Yb:KYW crystal, DM is a spherical dichroic mirror, M1-M6 would be the cavity mirrors, OC could be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal constructions leads to a purely natural birefringence, helping to stay away from thermally induced polarization rotation and depolarization reduction.
FIG. one. Optical layout of a laser with direct pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
5 mm besides the center of your beam caustic. So as to check the mode matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was formulated previously As well as in a exact problem with simulation [11]. As proven in Determine 3(b) with crimson dots and line, the CW output ability is very depending on the place of laser crystal and the experimental consequence coincides perfectly with simulation outcome. For a note, multimode operation occurred in experiment once the sizing of the pump beam is larger sized than TEM00 cavity method and it will cause increased CW output ability while in the displacement region down below three.five mm.
For tungstates, the ytterbium doping focus can be very superior without the need of significant quenching because the replaced ions have an exceptionally identical ion radius, as well as inter-ion length is relatively big.
Large-energy repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical programs
The thermal conductivity of popular double tungstates is from the order to three–four W/(K m) �?which isn't poor when compared with other laser crystals (Despite the fact that numerous moments lower than for YAG), and relatively huge in contrast Along with the thermal website conductivity of usual glasses.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature have been calculated. The emission spectrum and lifetime of your three F 4 psyched state ended up established. Making use of common and modified Judd–Ofelt theories, the intensity parameters plus the radiative lifetimes had been calculated and great agreement While using the experimental results was obtained for both equally theories.
Inquire RP Photonics for almost any assistance concerning tungstate lasers, which includes femtosecond lasers and superior-electrical power lasers.