We summarize new investigations on the density and morphology of bulk harm in KDP crystals being a purpose of pulse length, temporal profile, wavelength, and Strength fluence. As Formerly noted by Runkel et al.one, we also find that the size of bulk hurt web-sites differs approximately linearly with pulse period for pulses among one ns and 9 ns. Having said that this trend not applies at pulse durations under 1 ns. Experiments measuring the problems density and dimension distribution being a function of wavelength confirm numerous past functions which indicated a powerful dependence of harm density with wavelength. However, we also see that the size of injury web pages is pretty insensitive to wavelength.
a Raman spectra of DKDP crystals51 and b dependence of the variation in Raman change of the entirely symmetric PO4 vibration in DKDP within the diploma of deuteration51. Photographs reprinted with the following authorization: (a)51, (b)51 in the Optical Society
The regularities of laser-induced harm are examined for LiNbO3 and KDP single crystals. It is demonstrated that The form of harm in the dielectric crystals is dependent upon the elastic symmetry of crystal as well as propagation path of laser beam. When the beam propagates alongside the optic axis of Those people crystals, the figures of laser injury are 6-point stars for LiNbO3 and four-place kinds for KDP crystals.
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Tetragonal 98% deuterated potassium dihydrogen phosphate (DKDP) crystals had been grown speedily from synthetic DKDP Remedy with greater deuterium focus by using level seeds technique. Crystallization was carried out beneath superior supersaturation at diverse temperatures ranging from 38.three degrees C to fifty one.0 levels C. It truly is found which the metastable region of DKDP Remedy is non-distinct and DKDP crystal could be grown from substantial setting up temperature over and above the normal metastable location.
Suppression of transverse stimulated Raman scattering with laser-induced hurt array in a large-aperture potassium dihydrogen phosphate crystal
Bettering deuterated potassium dihydrogen phosphate’s electro-optical Q-switched characteristics by introducing a set of auxiliary electrodes
Investigation of bulk laser injury in KDP crystal being a function of laser irradiation way, polarization, and wavelength
By reformative design and using a capability to share the gas discharge voltage, the DKDP PPC pushed by a single pulse is understood. As gasoline breakdown delay time is secure, and discharge plasma is uniformly stuffed the full aperture, it fulfills the demand from customers of plasma electrode for the repetition-level PPC with DKDP crystal. The switch efficiency of PPC at The full aperture is better than 99%.
The deuterium homogeneities of enormous-size DKDP crystals developed by standard advancement approach and immediate progress approach were investigated in situ by Raman spectroscopy, respectively37,fifty three. The final results indicated the inhomogeneity of deuterium information was believed to generally be 0.
... DKDP crystals are characterized by lessen absorption and reduce half-wave voltage as compared with KDP crystals; thus, These are a lot more appropriate for the realization of Pockels cells. 16 Nonetheless, Pockels cells with DKDP crystal are recognized to suffer from solid piezoelectric ringing phenomenon.
CH4 would be the output voltage on the switch pulse generator. When the switch pulse voltage
The normal micro-strains of your 323 faces ended up calculated from your values of complete-width at half-utmost to the diffraction peaks click here (Fig. eight), which indicated that there was a trend of growing very first and after that lowering for the common the micro-strain, with the most worth occurring at fifty% deuterium. Moreover, the opportunity resources from the residual strains and stresses in solitary crystals were attributed on the defects together with dislocations, interstitial defects, and vacancy defects. Nonetheless, the influence of those defects to the macroscopic strain wants more investigate.
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