Facts About KGW Crystal Revealed
Facts About KGW Crystal Revealed
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For some purposes, tungstates give a mix of many beneficial properties. Particularly for passive mode locking, ytterbium-doped double tungstates in many cases are remarkable to other media with regard to The mix of substantial acquire bandwidth, substantial cross-sections, and comparatively very good thermal Houses �?Regardless that in Every particular discipline improved elements could possibly be observed.
In its elemental type, potassium has a silvery gray metallic visual appearance, but its compounds (for instance potassium hydroxide) tend to be more regularly Utilized in industrial and chemical apps.
The monoclinic crystal structures ends in a normal birefringence, assisting to keep away from thermally induced polarization rotation and depolarization loss.
The measured Slice-off wavelengths on the small-wavelength facet are consistent with the overall craze of blue-shifted spectral broadening about the bandgap of nonlinear product. All the nonlinear resources created sensible crimson-shifted spectral broadenings underneath problems of optimal pump pulse energies, with the largest pink-change exceeding 2000 nm calculated in GGG crystal. Our success discovered that GGG and BGO (which also experienced the lowest supercontinuum generation threshold) offer long lasting, optical problems-free overall performance at a laser repetition price of 200 kHz, suggesting that these elements are excellent possibilities to YAG and KGW for very low threshold, superior regular energy supercontinuum era inside the in close proximity to- and limited-wave infrared spectral ranges. We also demonstrated that scintillating Houses of bulk elements may be easily analyzed in the filamentation routine, by way of multiphoton excitation using in close proximity to-infrared femtosecond laser pulses.
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KGW (potassium gadolinium tungstate) is often a crystal that is commonly made use of like a Raman crystal in Raman spectroscopy. It is just a colorless, clear crystal that features a superior Raman scattering performance and a strong Raman spectrum, making it suited to a range of Raman programs.
Thermal consequences are noticeably smaller in KGW. This along with the high hurt threshold make the crystal an outstanding applicant for electrical power scaling. Evaluating Ba(NO3)2 and KGW for Raman application Ba(NO3)two are more effective in case of ns pulses and KGW �?in the event of ps pulses.
The 2-pump laser could supply around a hundred and twenty W ability. Roughly sixty% of the most pump energy was used inside our experiment thinking of the minimal effectiveness with the dichroic mirrors. Underneath this dual-crystal configuration, our cavity supports a one hundred W pump electricity input, as talked about in Area two.2. High-quality dichroic mirrors might be utilised in the future, and get more info laser pulses will likely be stretched to a longer pulse length.
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-switched laser output underneath the two crystal placement configurations. The black line denotes the configuration Along with the crystals put in precisely the same orientation, while the pink line is under the configuration of crystals put in orthogonal orientation.
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Both of those energies are marked from the dashed traces and their values are labeled from the plots. The equivalent attributes have been also observed in KGW and YAG crystals, whose spectral broadening dynamics are demonstrated for just a comparison in Fig. four.