A Simple Key For KYW Crystal Unveiled
A Simple Key For KYW Crystal Unveiled
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is really a amazing materials that performs a significant function in laser know-how. Its Most important function would be to crank out ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at close to 981 nm will make the crystal well suited for diode pumping. It is further Increased by its outstanding efficiency in this process, coupled with its small quantum defect.
Shade-coded reflectivity of the Bragg mirror as being a operate of wavelength and angle with the incident beam.
Optical structure of the laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output of your radiation, WP is really a fifty percent-wave plate, CL can be a collimating lens, FL is a concentrating lens, AE is an Lively component constructed from an Yb:KYW crystal, DM is often a spherical dichroic mirror, M1-M6 will be the cavity mirrors, OC could be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Test Compliant with MIL-C-675C armed forces expectations, an adhesion test included implementing a tape that satisfies LT-90 specs onto the lens film layer. The tape was affixed thoroughly and then eliminated vertically. This treatment was done thrice, causing no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical attributes owing into the presence of thulium ions, and as a consequence the resources could possibly be further more analyzed in the scope of laser and luminescence purposes.
5 mm besides the center with the beam caustic. As a way to Look at the method matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was made Formerly As well as in a exact same ailment with simulation [11]. As demonstrated in Determine 3(b) with purple dots and line, the CW output power is extremely depending on the position of laser crystal along with the experimental final result coincides effectively with simulation consequence. As a Notice, multimode Procedure happened in experiment when the measurement of your pump beam is larger sized than TEM00 cavity mode and it causes larger CW output electric power during the displacement region beneath 3.5 mm.
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Significant-electric power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical apps
Even though ytterbium-doped laser gain media usually exhibit a little quantum defect, ytterbium-doped tungstates permit for specially smaller values. By way of example, a 1030-nm Yb:YAG laser would normally be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW can be most proficiently pumped all around 981 nm.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared to its counterpart Yb:KGW, is really a impressive content that performs an essential role in read more laser technological innovation. Its Key operate will be to create ultrashort pulses of light, spanning only a few hundred femtoseconds.
Concurrently, a shorter laser wavelength can be acquired; it is achievable to function by using a quantum defect effectively down below one%. As a consequence, the warmth technology may be so modest that this partly compensates the decrease thermal conductivity.