New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly substantial as opposed with that of Yb:YAG. This permits for extensive wavelength tunability and for much shorter pulse durations from method-locked lasers. Values effectively beneath a hundred fs are already accomplished with passive mode locking.
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We current a twin-crystal Yb:KGW laserthat iscapable to work as a Q-switched oscillator with output electricity as many as 24 W and pulse duration of 20 ns,or as being a regenerative amplifier with output electric power around 21 W and pulse length underneath two hundred fs immediately after compression of chirped pulses. Each lasers have exceptional beam top quality with beam parameter M2
FIG. four. Autocorrelation purpose of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong Energetic factor for an output electricity of seven hundred mW. The width of
Ultrafast lasers, with pulse widths of a few picoseconds (10−12 s) or significantly less, help time resolution expected in laser-psyched fluorescence life time spectroscopy and imaging procedures.Additionally, they produce substantial pulse peak powers at large repetition premiums and average ordinary output powers.
Right after air drying and subsequent cleansing which has a cotton fabric soaked in alcohol, the movie floor showed no signs of peeling or scratches.
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Spatial framework with the beam plus the corresponding intensity profiles I on the output from the laser.
For tungstates, the ytterbium doping concentration can be quite large without sizeable quenching because the replaced ions have an exceptionally equivalent ion radius, as well as inter-ion length is comparatively significant.
... Not merely the position of crystal inside the cavity but will also the amplification axis of crystal impacts the laser Procedure tremendously, as the absorption and emission cross sections of the crystal are rather various according to the orientation of your crystal.
The thermal conductivity of widespread double tungstates is of the purchase to 3–four W/(K m) �?which isn't poor compared with other laser crystals (While a number of situations lower than for YAG), and pretty huge as opposed While using the thermal conductivity of regular glasses.
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Simultaneously, a shorter laser wavelength is often attained; it is possible to work using a quantum defect nicely beneath 1%. For a consequence, the warmth generation may be so little this partly compensates the lessen thermal conductivity.