Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The obtain 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 Substantially shorter pulse durations from manner-locked lasers. Values well below 100 fs happen to be attained with passive manner locking.
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We current a dual-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output electricity as many as 24 W and pulse size of 20 ns,or as a regenerative amplifier with output electricity nearly 21 W and pulse period down below two hundred fs immediately after compression of chirped pulses. Both of those lasers have superb beam quality with beam parameter M2
FIG. 4. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of a laser with an oblong Energetic element for an output ability of seven hundred mW. The width of
Optical format of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output from the radiation, WP is really a 50 %-wave plate, CL is often a collimating lens, FL is really a concentrating lens, AE is definitely an Energetic ingredient made out of an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 tend to be the cavity mirrors, OC will be the output mirror, and SAM can be a semiconductor saturable-absorber mirror.
The monoclinic crystal buildings brings about a purely 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 used as lasing components to deliver ultrashort (~ 100-two hundred fs) substantial electricity pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser systems.
5 mm apart from the center of the beam caustic. So that you can Test the mode matching simulation, we performed the experiment with Ng-Minimize crystal oscillator, which was produced Formerly and in a click here identical situation with simulation [eleven]. As shown in Figure 3(b) with purple dots and line, the CW output electrical power is very depending on the position of laser crystal and also the experimental outcome coincides effectively with simulation result. Like a Notice, multimode operation occurred in experiment in the event the dimensions with the pump beam is much larger than TEM00 cavity mode and it will cause bigger CW output power during the displacement location down below three.5 mm.
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... Not merely the situation of crystal during the cavity but also the amplification axis of crystal affects the laser Procedure considerably, as the absorption and emission cross sections of your crystal are quite different according to the orientation from the crystal.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) when compared to its counterpart Yb:KGW, is usually a outstanding materials that plays an essential function in laser engineering. Its Main operate is usually to create ultrashort pulses of light, spanning just a couple hundred femtoseconds.
Inquire RP Photonics for virtually any tips concerning tungstate lasers, which include femtosecond lasers and higher-electric power lasers.