KYW Crystal Secrets
KYW Crystal Secrets
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Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the heart beat
The absorption and emission spectra of Yb:KYW Crystals Display screen strong peaks at 980 nm and 1030 nm, respectively, ensuring efficient Power conversion and large functionality in laser devices.
Optical layout of a laser with immediate pumping With all the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output of the radiation, WP is often a fifty percent-wave plate, CL is usually a collimating lens, FL is actually a concentrating lens, AE is definitely an Lively factor comprised of an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC would be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
Adhesion Test Compliant with MIL-C-675C armed forces criteria, an adhesion examination concerned making use of a tape that fulfills LT-ninety specifications on to the lens movie layer. The tape was affixed totally and after that taken out vertically. This treatment was executed three times, leading to no blistering here or peeling.
Raman, luminescence and transmission spectra reveal optical attributes owing to your existence of thulium ions, and for that reason the elements might be additional researched in the scope of laser and luminescence programs.
A large brightnessQ-switched oscillator and regenerative amplifier dependant on a dual-crystal Yb:KGW laser
... at half-height were produced in a very master oscillator with selfsynchronization in the axial modes, described within our previously report. 21 The new edition of your laser, compared with that described in our previously post, used an Yb:KYW crystal having an N pcut (optical axis N p of your index ellipsoid was parallel on the propagation course of your laser radiation), with the polarization from the generated radiation directed along the N m axis.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW mainly because of the equivalent measurements of such chemical things approximately a hundred% of Yb-doping could be achieved.
While ytterbium-doped laser acquire media usually show a small quantum defect, ytterbium-doped tungstates allow for for particularly compact values. As an example, a 1030-nm Yb:YAG laser would Ordinarily be pumped close to 940 nm, Whilst Yb:KGW or Yb:KYW can be most efficiently pumped all-around 981 nm.
Li2WO4-WO3 flux was correctly applied lowering The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds to your P2/n space team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at home temperature were measured. The emission spectrum and life span on the three File four fired up state had been established. Working with standard and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes had been calculated and good arrangement with the experimental outcomes was acquired for both theories.
At the same time, a shorter laser wavelength is often obtained; it can be done to operate which has a quantum defect very well under one%. As a consequence, the warmth technology can be so smaller this partly compensates the lower thermal conductivity.