Getting My KGW Crystal To Work
Getting My KGW Crystal To Work
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In its elemental form, potassium provides a silvery grey metallic overall look, but its compounds (like potassium hydroxide) are more often Utilized in industrial and chemical purposes.
-switched mode. The bandwidth inside the orthogonal orientation was Plainly Substantially broader. The calculated Fourier transform limited pulse length was as small as sub-160 fs. Under the configuration exactly where the two crystals had been placed in the same orientation, with the seed enter, the amplified pulse bandwidth was only 3 nm with 180 μJ Electrical power when it broke the dichroic mirrors.
Just before the development of Nd:YAG, Nd3+:CaWO4 was an important unusual-earth-doped laser achieve medium. It had been the truth is Employed in the main continuously operating crystal laser.
Another was positioned with its Np -axis parallel While using the s-polarized path. A comparison was designed between a configuration Using the crystals placed in a similar orientation (
The black line denotes the configuration Using the crystals placed in the identical orientation, although the red line is under the configuration of crystals put in orthogonal orientation.
The actual spectra have been reconstructed by correcting the measured spectra with the account for your filter transmission capabilities and for that sensitivity functions of your spectrometers at the info put up-processing stage. The spectral dynamics in Each individual sample was calculated by good tuning the pump pulse Electricity with a computer-controlled attenuator that was built-in from the laser technique. Thermal Strength meter EM (Ophir 3A-PF-12) was accustomed to evaluate the SC Power which was thereafter utilized to calculate the spectral Vitality density from the SC radiation. Every one of the measurements were executed with none translation of your sample with respect on the pump beam.
The 2-pump laser could offer as much as one hundred twenty W electricity. Somewhere around sixty% of the most pump ability was used inside our experiment considering the low overall performance in the dichroic mirrors. Beneath this dual-crystal configuration, our cavity supports a 100 W pump electric power enter, as talked over in Section 2.two. High-quality dichroic mirrors will probably be utilized in the future, and laser pulses will probably be stretched to a longer pulse period.
The Martinez stretcher stretched the seed pulses to ~250 ps with 1600 grooves/mm grating. The input with the stretcher (incident angle: 52°) Which on the compressor incident on the grating ended up in the exact same aspect; consequently, a slight angular tuning of your grating can be designed to acquire the ideal compression end result. Inside the compressor, the input angle on the grating and the gap in between the interpretation phase (S1) and also the transmission grating (TG) ended up meant to compensate for your stretcher dispersion and all dispersion introduced through the elements.
KGW has a robust Raman more info spectrum that extends with the ultraviolet into the near infrared, making it beneficial for A variety of apps. The crystal can be used for a reference material for Raman spectroscopy, as well as a sample for studying Raman scattering in the solid state.
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The two energies are marked with the dashed strains and their values are labeled while in the plots. The similar attributes have been also observed in KGW and YAG crystals, whose spectral broadening dynamics are demonstrated for just a comparison in Fig. 4.