KYW Crystal Options
KYW Crystal Options
Blog Article
In realistic phrases, the Yb:KYW crystal has identified its market in large-electrical power laser applications due to its ability to deliver high energy ultrashort laser pulses when keeping a compact size. The interaction of its functions �?seamless ytterbium substitution, powerful absorption properties, ultrashort pulse era and efficiency in Electrical power conversion �?positions the Yb:KYW crystal like a cornerstone in the laser technological know-how, covering assorted fields ranging from scientific exploration to industrial programs.
This one of a kind attribute of ultrafast pulses allows nonlinear optical interaction with tissue at lower General exposure, and drives apps such as deep-tissue multiphoton microscopy and substantial-precision eye surgery
The Yb:KYW crystal’s proficiency in light-weight absorption at about 981 nm will make the crystal compatible for diode pumping. It really is further Improved by its impressive effectiveness in this process, coupled with its lower quantum defect.
FIG. four. Autocorrelation purpose of the heartbeat 共a兲and spectrum 共b兲of a laser with an oblong Energetic aspect for an output electrical power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by potent linear arrays of semiconductor injection lasers acquiring fiber output. To avoid spectral narrowing during amplification plus the corresponding lengthening from the amplified pulse when it can be compressed, a combination of two Yb:KYW crystals ended up used, While using the spectral maxima on the amplification shifted relative to one another and with spectral profiling with the amplified radiation.
Before the event of Nd:YAG, Nd3+:CaWO4 was a vital rare-earth-doped laser get medium. It was in reality Utilized in the main continuously operating crystal laser.
FIG. 1. Optical format of a laser with direct pumping Using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Spatial structure from the beam and the click here corresponding intensity profiles I in the output of the laser.
... at 50 percent-height had been produced inside a master oscillator with selfsynchronization from the axial modes, described inside our before report. 21 The new edition of the laser, as opposed to that described within our previously short article, made use of an Yb:KYW crystal having an N pcut (optical axis N p in the index ellipsoid was parallel for the propagation course of your laser radiation), While using the polarization of your produced radiation directed together the N m axis.
Having said that, as soon as Nd3+:YAG grew to become commercially available, the fascination in CaWO4 dropped sharply. In afterwards years, certain other tungstate crystals began to entice a great deal of attention.
The thermal conductivity of common double tungstates is with the buy to 3–four W/(K m) �?which is not undesirable as opposed with other laser crystals (Even though various situations less than for YAG), and relatively significant in contrast Together with the thermal conductivity of common glasses.
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Simultaneously, a shorter laser wavelength is usually obtained; it is feasible to function that has a quantum defect perfectly below 1%. Like a consequence, the heat era is often so little this partly compensates the lessen thermal conductivity.