KYW Crystal No Further a Mystery
KYW Crystal No Further a Mystery
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is very massive as opposed with that of Yb:YAG. This allows for vast wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values properly underneath a hundred fs are already obtained with passive manner locking.
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We current a twin-crystal Yb:KGW laserthat iscapable to work as being a Q-switched oscillator with output electrical power approximately 24 W and pulse duration of 20 ns,or like a regenerative amplifier with output power approximately 21 W and pulse period down below two hundred fs soon after compression of chirped pulses. Both equally lasers have fantastic beam high-quality with beam parameter M2
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular active aspect for an output electric power of 700 mW. The width of
Optical layout of the laser with direct pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output in the radiation, WP is a 50 percent-wave plate, CL is a collimating lens, FL is often a focusing lens, AE is undoubtedly an Lively component constructed from an Yb:KYW crystal, DM is really a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC will be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Examination Compliant with MIL-C-675C military services requirements, an adhesion check concerned making use of a tape that fulfills LT-ninety requirements on to the lens movie layer. The tape was affixed thoroughly and afterwards eradicated vertically. This procedure was executed thrice, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are employed as lasing products to crank out ultrashort (~ 100-200 fs) large power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser techniques.
A significant brightnessQ-switched oscillator and regenerative amplifier based upon a twin-crystal Yb:KGW laser
... at 50 %-height were being created in the master oscillator with selfsynchronization of your axial modes, described inside our before posting. 21 The new edition of the laser, unlike that explained inside our before write-up, utilised an Yb:KYW crystal using an N pcut (optical axis N p from the index ellipsoid was parallel to the propagation way of the laser radiation), With all the polarization with the produced radiation directed together the N m axis.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the equivalent measurements of these chemical elements nearly one hundred% of Yb-doping could possibly be achieved.
Though ytterbium-doped laser gain media usually exhibit a small quantum defect, ytterbium-doped tungstates permit for specifically tiny values. By way of example, a 1030-nm Yb:YAG laser would Generally be pumped all around 940 nm, whereas Yb:KGW or Yb:KYW might be most proficiently pumped close to 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were being calculated. The emission spectrum and lifetime in the 3 File four energized point out were determined. Making use of common and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes were being calculated and good settlement with the experimental outcomes was obtained for both of those theories.
Question RP Photonics for any information regarding tungstate lasers, including femtosecond lasers and significant-energy lasers.