The smart Trick of KYW Crystal That No One is Discussing
The smart Trick of KYW Crystal That No One is Discussing
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This allows for extensive wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values nicely under a hundred fs are actually obtained with passive manner locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is usually a outstanding product that performs an essential job in laser technological know-how. Its Major purpose will be to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
We present a dual-crystal Yb:KGW laserthat iscapable to function for a Q-switched oscillator with output power up to 24 W and pulse length of twenty ns,or to be a regenerative amplifier with output ability nearly 21 W and pulse period down below two hundred fs immediately after compression of chirped pulses. Both of those lasers have fantastic beam excellent with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Screen solid peaks at 980 nm and 1030 nm, respectively, making sure economical energy conversion and high overall performance in laser methods.
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by effective linear arrays of semiconductor injection lasers possessing fiber output. To stop spectral narrowing throughout amplification and the corresponding lengthening of your amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals ended up utilised, Using the spectral maxima of your amplification shifted relative to each other and with spectral profiling of your amplified radiation.
Immediately after air drying and subsequent cleaning that has a cotton cloth soaked in alcohol, the film area showed no signs of peeling or scratches.
Raman, luminescence and transmission spectra reveal optical options owing to the presence of thulium ions, and thus the components might be further more researched within the scope of laser and luminescence programs.
A substantial brightnessQ-switched oscillator and regenerative amplifier dependant on a twin-crystal Yb:KGW laser
... at half-top ended up generated inside of a grasp oscillator with selfsynchronization of the axial modes, explained in our earlier article. 21 The new edition from the laser, compared with that described inside our previously posting, applied an Yb:KYW crystal with the N pcut (optical axis N p of your index ellipsoid was parallel on the propagation direction on the laser radiation), Using the polarization with the created radiation directed along the N m axis.
By substituting yttrium read more with ytterbium within the crystal lattice of Yb:KYW mainly because of the similar dimensions of those chemical components up to a hundred% of Yb-doping could possibly be accomplished.
The thermal conductivity of common double tungstates is with the order to three–four W/(K m) �?which is not lousy in comparison with other laser crystals (although many occasions a lot less than for YAG), and fairly massive as opposed With all the thermal conductivity of regular Eyeglasses.
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Concurrently, a shorter laser wavelength is often acquired; it can be done to function with a quantum defect very well beneath one%. Being a consequence, the heat era can be so modest this partly compensates the reduced thermal conductivity.