We summarize recent investigations on the density and morphology of bulk harm in KDP crystals as being a function of pulse duration, temporal profile, wavelength, and Vitality fluence. As previously described by Runkel et al.1, we also notice that the dimensions of bulk problems websites differs roughly linearly with pulse length for pulses among one ns and nine ns. On the other hand this trend no longer applies at pulse durations under 1 ns. Experiments measuring the hurt density and sizing distribution being a function of wavelength validate many prior operates which indicated a powerful dependence of harm density with wavelength. Having said that, we also notice that the size of harm internet sites is relatively insensitive to wavelength.
Measurement and control of The proportion of deuterium in solitary crystal DKDP samples is of sizeable importance with the production of optical modulators and deflectors, optical frequency converters as well as other optical products. A whole new process determine the deuterium articles of DKDP crystal with thermo-gravimetric equipment is made during the short article which implies the weighing from the First content and solutions of thermal decay.
It also hinders identification on the composition of your injury precursors needed to finally eradicate the harm problem. It really is thus imperative to develop new methods to expose the optical Homes from the injury precursors. With this dissertation, the interaction from the problems precursors in KDP/DKDP with laser pulses of variable fluence and frequency is investigated working with a number of experimental procedures. A hurt screening method is executed that can take advantage of the modify from the destruction qualities of the fabric subsequent publicity to laser pulses by measuring the ensuing density of harm websites. The results propose there are two sorts of precursors, Each individual bringing about hurt initiation above a special frequency vary. For both of those precursor populations, the pathways resulting in damage initiation are diverse than Individuals bringing about conditioning. Moreover, among the one particular precursor inhabitants, you will find several pathways resulting in conditioning that happen to be dependent on the pre-publicity frequency and fluence. From these final results, a way is developed for predicting the injury performance throughout harmonic conversion in which numerous wavelengths are current. Also, laser pre-irradiation parameters are prescribed for maximizing the conditioning influence.
Then the outcome of neutron diffraction ended up accustomed to calibrate the more info connection in between the deuterium content and the variation of PO4 vibration peak in Raman spectra plus the absorption bands in IR spectra, respectively. According to the Raman shifts of PO4 vibration peak of KDP and DKDP crystals with unique degrees of deuteration (Fig.
The ultra-broadband period matching was experimentally observed inside a DKDP crystal upon parametric amplification of signal radiation
To the beam direction parallel on the X and Y axes from the KDP crystal, the problems to begin with incorporates a cross-like configuration, with splitting of Z-oriented crack into two cracks for the duration of its even more evolution.
Increasing deuterated potassium dihydrogen phosphate’s electro-optical Q-switched characteristics by including a pair of auxiliary electrodes
gasoline discharging security. But, the voltage around the crystal is equivalent into the DKDP 50 %-wave
longitudinal electro-optical impact in crystal of DKDP was applied and its size was Φ10mm ×
Electro-optic coefficient measurement of a K(H1−xD x )2PO4 crystal dependant on χ nonlinear optical know-how
So this PPC normally use KDP as its electro-optic crystal, because of its high 50 %-wave
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The average micro-strains with the 323 faces have been calculated from the values of whole-width at fifty percent-highest for that diffraction peaks (Fig. 8), which indicated that there was a development of raising very first and after that lowering for the common the micro-pressure, with the utmost benefit occurring at 50% deuterium. Also, the prospective resources of your residual strains and stresses in single crystals had been attributed to the defects which includes dislocations, interstitial defects, and vacancy defects. On the other hand, the impact of such defects on the macroscopic tension needs further exploration.
field is placed on the electro-optical crystal via exterior ring electrodes. To attain a