KYW Crystal Secrets
KYW Crystal Secrets
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is rather large in comparison with that of Yb:YAG. This enables for large wavelength tunability and for much shorter pulse durations from method-locked lasers. Values very well down below a hundred fs happen to be attained with passive method locking.
This exclusive attribute of ultrafast pulses allows nonlinear optical interaction with tissue at low overall publicity, and drives applications for instance deep-tissue multiphoton microscopy and large-precision eye surgical procedure
We existing a twin-crystal Yb:KGW laserthat iscapable to function being a Q-switched oscillator with output electrical power nearly 24 W and pulse size of 20 ns,or as being a regenerative amplifier with output electricity around 21 W and pulse period beneath two hundred fs just after compression of chirped pulses. Each lasers have exceptional beam excellent with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Exhibit potent peaks at 980 nm and 1030 nm, respectively, making sure efficient Vitality conversion and substantial effectiveness in laser units.
Optical structure of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is usually a fifty percent-wave plate, CL is a collimating lens, FL can be a focusing lens, AE is an Lively component comprised of an Yb:KYW crystal, DM is actually a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC will be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal structures results in a natural birefringence, assisting to prevent thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are made use of as lasing products to crank out ultrashort (~ one hundred-200 fs) superior check here electric power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser techniques.
5 mm aside from the center of your beam caustic. To be able to Examine the mode matching simulation, we executed the experiment with Ng-Minimize crystal oscillator, which was produced previously As well as in a identical condition with simulation [eleven]. As shown in Determine three(b) with crimson dots and line, the CW output power is very dependent on the posture of laser crystal along with the experimental result coincides very well with simulation result. To be a Be aware, multimode Procedure happened in experiment once the dimensions of the pump beam is more substantial than TEM00 cavity manner and it causes larger CW output electric power in the displacement region under 3.five mm.
For tungstates, the ytterbium doping focus can be very large without the need of significant quenching as the replaced ions have an extremely related ion radius, as well as the inter-ion length is comparatively significant.
Significant-energy repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical purposes
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Li2WO4-WO3 flux was effectively utilized lessening The expansion temperature below 900 oC. In line with one crystal x-ray measurements, the crystal corresponds to the P2/n Area group.
Yb:KYW crystal (Yb-doped potassium yttrium tungstate) in comparison to its counterpart Yb:KGW, is really a remarkable materials that plays an important job in laser technology. Its Most important purpose is usually to create ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
Ask RP Photonics for almost any suggestions about tungstate lasers, like femtosecond lasers and high-electric power lasers.