An Unbiased View of KYW Crystal

An Unbiased View of KYW Crystal

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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW may be very significant when compared with that of Yb:YAG. This permits for broad wavelength tunability and for A great deal shorter pulse durations from method-locked lasers. Values perfectly under one hundred fs are actually obtained with passive manner locking.

This one of a kind attribute of ultrafast pulses permits nonlinear optical conversation with tissue at low overall exposure, and drives applications like deep-tissue multiphoton microscopy and higher-precision eye surgical treatment

time. Crystals of your compound melts congruently at 1007 oC, even so melt crystallization of top quality crystal is not possible due to period changeover at ~920 oC. The very best seeded Option technique from

Shade-coded reflectivity of the Bragg mirror as a operate of wavelength and angle of your incident beam.

Optical structure of the laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output of your radiation, WP is often a 50 percent-wave plate, CL is really a collimating lens, FL is actually a focusing lens, AE is an active element made from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 are the cavity mirrors, OC is the output mirror, and SAM is usually a semiconductor saturable-absorber mirror.

Adhesion Test Compliant with MIL-C-675C army standards, an adhesion test concerned applying a tape that meets LT-90 requirements on to the lens film layer. The tape was affixed fully then eliminated vertically. This treatment was executed thrice, causing no blistering or peeling.

PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are made use of as lasing components to produce ultrashort (~ a hundred-200 fs) significant electrical power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser methods.

five mm besides the center of get more info your beam caustic. As a way to Look at the mode matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was designed Beforehand and in a exact same condition with simulation [eleven]. As proven in Figure three(b) with purple dots and line, the CW output ability is very depending on the position of laser crystal plus the experimental final result coincides well with simulation end result. Being a Take note, multimode operation occurred in experiment if the dimensions of the pump beam is greater than TEM00 cavity method and it will cause bigger CW output power within the displacement area under three.five mm.

For tungstates, the ytterbium doping focus can be quite large with out significant quenching as the replaced ions have a really identical ion radius, plus the inter-ion distance is relatively substantial.

... Not merely the placement of crystal inside the cavity but in addition the amplification axis of crystal has an effect on the laser Procedure considerably, since the absorption and emission cross sections on the crystal are very unique based on the orientation on the crystal.

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