Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is quite significant as opposed with that of Yb:YAG. This permits for wide wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values well down below 100 fs are achieved with passive manner locking.
The comparison with Eyeglasses is suitable For the reason that substantial achieve bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
We existing a dual-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output electrical power as many as 24 W and pulse length of 20 ns,or being a regenerative amplifier with output electric power nearly 21 W and pulse duration under 200 fs following compression of chirped pulses. The two lasers have fantastic beam high-quality with beam parameter M2
FIG. 4. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of the laser with a rectangular active component for an output electric power of seven-hundred mW. The width of
Optical structure of the laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output of your radiation, WP can be a 50 percent-wave plate, CL is often a collimating lens, FL is actually a concentrating lens, AE is really an Lively aspect made out of an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 are definitely the cavity mirrors, OC could be the output mirror, and SAM is a semiconductor saturable-absorber mirror.
Adhesion Examination Compliant with MIL-C-675C navy standards, an adhesion exam associated making use of a tape that fulfills LT-90 requirements onto the lens movie layer. The tape was affixed absolutely and after that eradicated vertically. This course of action was executed three times, causing no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical features owing towards the presence of thulium ions, and therefore the materials can be even further examined while in the scope of laser and luminescence purposes.
Tungstates have a tendency to get significant Raman coefficients (�?Raman scattering). Hence, they will generate sizeable Raman gain at reasonable optical intensities. It is achievable to make use of the laser crystal by itself for a Raman converter.
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On the other hand, the moment Nd3+:YAG became commercially readily available, the desire in CaWO4 dropped sharply. In later on a long time, selected other tungstate crystals started to draw in a great deal of awareness.
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This tandem of characteristics has far-reaching implications, particularly in the development of compact nonetheless powerfull lasers.
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