Top Guidelines Of KYW Crystal
Top Guidelines Of KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is very huge when compared with that of Yb:YAG. This permits for broad wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values perfectly below a hundred fs happen to be attained with passive method locking.
This distinctive characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at small Over-all exposure, and drives apps including deep-tissue multiphoton microscopy and substantial-precision eye medical procedures
We present a twin-crystal Yb:KGW laserthat iscapable to work as a Q-switched oscillator with output energy as much as 24 W and pulse length of twenty ns,or for a regenerative amplifier with output ability nearly 21 W and pulse period under 200 fs following compression of chirped pulses. Both lasers have excellent beam high quality with beam parameter M2
Color-coded reflectivity of a Bragg mirror like a purpose of wavelength and angle with the incident beam.
Optical format of the laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output in the radiation, WP is actually a 50 %-wave plate, CL is a collimating lens, FL is really a focusing lens, AE is undoubtedly an Energetic component constructed from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC could be the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.
Adhesion Check Compliant with MIL-C-675C armed forces specifications, an adhesion check concerned applying a tape that satisfies LT-ninety requirements onto the lens movie layer. The tape was affixed entirely and afterwards eradicated vertically. This method was performed 3 times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical attributes owing for the existence of thulium ions, and thus the supplies could possibly be additional researched inside the scope of laser and luminescence programs.
Spatial composition of your beam and the corresponding intensity profiles I within the output with the laser.
For tungstates, the ytterbium doping concentration can be quite superior without important quenching as the replaced ions have an incredibly similar ion radius, as well as the inter-ion length is fairly significant.
By substituting get more info yttrium with ytterbium within the crystal lattice of Yb:KYW as a result of comparable dimensions of such chemical elements nearly one hundred% of Yb-doping might be obtained.
Though ytterbium-doped laser gain media generally show a little quantum defect, ytterbium-doped tungstates allow for for significantly compact values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, While Yb:KGW or Yb:KYW may be most proficiently pumped about 981 nm.
Li2WO4-WO3 flux was successfully applied minimizing The expansion temperature down below 900 oC. In line with one crystal x-ray measurements, the crystal corresponds into the P2/n space group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature had been measured. The emission spectrum and life time with the three File four psyched state were established. Employing typical and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes were being calculated and superior settlement While using the experimental success was received for the two theories.
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