Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW may be very significant in comparison with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from method-locked lasers. Values very well down below one hundred fs are actually achieved with passive mode locking.
This exclusive characteristic of ultrafast pulses permits nonlinear optical interaction with tissue at low In general publicity, and drives programs for example deep-tissue multiphoton microscopy and significant-precision eye operation
We current a twin-crystal Yb:KGW laserthat iscapable to function as being a Q-switched oscillator with output power around 24 W and pulse length of twenty ns,or as being a regenerative amplifier with output ability as many as 21 W and pulse duration under two hundred fs immediately after compression of chirped pulses. The two lasers have fantastic beam top quality with beam parameter M2
Coloration-coded reflectivity of the Bragg mirror as a functionality of wavelength and angle of your incident beam.
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers getting fiber output. To prevent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima with the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Right after air drying and subsequent cleansing using a cotton fabric soaked in Liquor, the movie surface showed no indications of peeling or scratches.
FIG. 1. Optical format of a laser with KYW Crystal immediate pumping Using the radiation of semiconductor injection lasers. LD can be an IPG Photonics laser diode with fiber output
Tungstates are inclined to have substantial Raman coefficients (�?Raman scattering). Hence, they will create significant Raman get at reasonable optical intensities. It is possible to utilize the laser crystal itself for a Raman converter.
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By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW as a result of similar dimensions of these chemical elements as many as one hundred% of Yb-doping could be realized.
The thermal conductivity of widespread double tungstates is of the buy to 3–4 W/(K m) �?which isn't negative as opposed with other laser crystals (Despite the fact that several periods less than for YAG), and reasonably large in comparison While using the thermal conductivity of common glasses.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were being calculated. The emission spectrum and lifetime in the 3 File four psyched point out were determined. Making use of common and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes ended up calculated and superior settlement While using the experimental success was attained for both equally theories.
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