Facts About KGW Crystal Revealed
Facts About KGW Crystal Revealed
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite large when compared with that of Yb:YAG. This allows for huge wavelength tunability and for Considerably shorter pulse durations from method-locked lasers. Values nicely below 100 fs are actually realized with passive method locking.
Thus There may be minor freedom for optimizing the dispersion payment result. Sub-200 fs pulses might be predicted with a broader bandwidth seed input. Due to the twin-crystal configuration, the laser cavity provides a near diffraction restricted laser beam with M
Substitute on the Personal computer for a greater 1 or maybe a great adjustment with the Computer system orientation as well as the used higher voltage is needed to prevent this phenomenon. A quick pulse picker can be utilized to improve the nanosecond-scale distinction of your output key pulse.
Amplified pulses by having an energy earlier mentioned two.five mJ may be anticipated by applying a greater pump energy towards the regenerative amplifier and making it function in the saturation stage. The laser fluence of ~one J/cm2 over the dichroic mirrors is believed to become below the damage threshold of high-high-quality dielectric-coated mirrors.
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KGW (potassium gadolinium tungstate) can be a crystal that is usually used to be a Raman crystal in Raman spectroscopy. It is a colorless, clear crystal that has a significant Raman scattering performance and a robust Raman spectrum, rendering it suitable for A variety of Raman programs.
The actual spectra have been reconstructed by correcting the measured spectra using an account for that filter transmission capabilities and for your sensitivity capabilities on the spectrometers at the information post-processing stage. The spectral dynamics in Just about every sample was measured by wonderful tuning the pump pulse Strength with a computer-controlled attenuator that was built-in in the laser technique. Thermal energy meter EM (Ophir 3A-PF-12) was accustomed to measure the SC Electrical power which was thereafter accustomed to estimate the spectral energy density from the SC radiation. All the measurements have been carried out with none translation of your sample with regard for the pump website beam.
The 2-pump laser could provide up to 120 W power. Approximately sixty% of the most pump ability was applied in our experiment looking at the reduced overall performance of the dichroic mirrors. Underneath this twin-crystal configuration, our cavity supports a one hundred W pump electric power input, as reviewed in Portion 2.2. High-quality dichroic mirrors will be employed Down the road, and laser pulses will be stretched to an extended pulse duration.
The Martinez stretcher stretched the seed pulses to ~250 ps with 1600 grooves/mm grating. The enter on the stretcher (incident angle: 52°) Which of your compressor incident within the grating were being from the exact same side; therefore, a slight angular tuning of your grating might be built to get the very best compression final result. While in the compressor, the input angle to the grating and the distance amongst the translation phase (S1) plus the transmission grating (TG) have been designed to compensate for that stretcher dispersion and all dispersion released because of the products.
-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, though the crimson line is beneath the configuration of crystals placed in orthogonal orientation.
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