An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This enables for large wavelength tunability and for Substantially shorter pulse durations from mode-locked lasers. Values properly underneath a hundred fs are obtained with passive manner locking.
This distinctive attribute of ultrafast pulses enables nonlinear optical conversation with tissue at reduced overall publicity, and drives apps including deep-tissue multiphoton microscopy and substantial-precision eye surgical treatment
We existing a twin-crystal Yb:KGW laserthat iscapable to function to be a Q-switched oscillator with output energy approximately 24 W and pulse size of 20 ns,or like a regenerative amplifier with output electrical power as many as 21 W and pulse length beneath 200 fs after compression of chirped pulses. Both lasers have excellent beam top quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals display strong peaks at 980 nm and 1030 nm, respectively, ensuring economical Electrical power conversion and significant general performance in laser systems.
Optical structure of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is a 50 percent-wave plate, CL is really a collimating lens, FL is often a focusing lens, AE is undoubtedly an active factor made from an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC may be the output mirror, and SAM is often a semiconductor saturable-absorber mirror.
The monoclinic crystal constructions leads to a organic birefringence, helping to steer clear of thermally induced polarization rotation and depolarization loss.
Raman, luminescence and transmission spectra reveal optical capabilities owing into the existence of thulium ions, and therefore the supplies could possibly be more researched inside the scope of laser and luminescence programs.
A large brightnessQ-switched oscillator and regenerative amplifier determined by a dual-crystal Yb:KGW laser
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Higher-electric power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical programs
Even though ytterbium-doped laser obtain media usually exhibit a little quantum defect, ytterbium-doped tungstates permit for specifically little values. One example is, a 1030-nm Yb:YAG laser would Ordinarily be pumped all around 940 nm, While Yb:KGW or Yb:KYW could be most effectively pumped all over 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at space temperature ended up measured. The emission spectrum and life time with the three File four thrilled state have been decided. Applying standard and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes had been calculated and fantastic settlement While using the experimental success was attained for both of those theories.
Concurrently, a shorter laser wavelength could be obtained; it is achievable to operate that has a quantum defect properly beneath one%. Like a consequence, the warmth generation is usually so tiny this partly compensates the reduced thermal conductivity.