The KYW Crystal Diaries
The KYW Crystal Diaries
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very big in contrast with that of Yb:YAG. This enables for wide wavelength tunability and for much shorter pulse durations from method-locked lasers. Values effectively under one hundred fs have already been accomplished with passive manner locking.
This unique characteristic of ultrafast pulses permits nonlinear optical conversation with tissue at minimal Total publicity, and drives apps which include deep-tissue multiphoton microscopy and higher-precision eye surgical treatment
We present a twin-crystal Yb:KGW laserthat iscapable to function like a Q-switched oscillator with output electrical power up to 24 W and pulse duration of 20 ns,or as a regenerative amplifier with output ability approximately 21 W and pulse duration down below 200 fs following compression of chirped pulses. Both of those lasers have great beam top quality with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by highly effective linear arrays of semiconductor injection lasers possessing fiber output. To avoid spectral narrowing throughout amplification plus the corresponding lengthening in the amplified pulse when it truly is compressed, a mix of two Yb:KYW crystals have been utilised, While using the spectral maxima on the amplification shifted relative to one another and with spectral profiling of the amplified radiation.
Adhesion Examination Compliant with MIL-C-675C army expectations, an adhesion exam involved implementing a tape that fulfills LT-90 specifications onto the lens movie layer. The tape was affixed completely and then eliminated vertically. This method was performed thrice, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are applied as lasing products to deliver ultrashort (~ one hundred-200 fs) higher electric power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser units.
five mm aside from the middle of your beam caustic. To be able to Look at the mode matching simulation, we done the experiment with Ng-Slice crystal oscillator, which was made previously As well as in a very same condition with simulation [eleven]. As shown in Figure three(b) with crimson dots and line, the CW output ability is very depending on the situation of laser crystal along with the experimental result coincides perfectly with simulation result. As a note, multimode operation happened in experiment when the dimension of your pump beam is greater than TEM00 cavity method and it brings about larger CW output energy within the displacement location under three.5 mm.
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... Not simply the situation of crystal inside the cavity but also the amplification axis of crystal has an effect on the laser Procedure enormously, as the absorption and emission cross sections with the crystal are rather unique based on the orientation in the crystal.
Although ytterbium-doped laser obtain media generally exhibit a little quantum defect, ytterbium-doped tungstates enable for significantly tiny values. For example, read more a 1030-nm Yb:YAG laser would Generally be pumped all-around 940 nm, While Yb:KGW or Yb:KYW may very well be most effectively pumped all around 981 nm.
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