This paper presents the results of modeling the antireflection surfaces on a diamond by creating a periodic structure (alternating channels) on its surface. The results of modeling using various forms of channel sections and geometric parameters are considered. Calculated transmittance spectra for all the presented structures are obtained. The dependencies between the geometric parameters used and the received transmittance spectra are established.
The cathodoluminescence of two samples of synthetic diamond containing NV centers is investigated. Cathodoluminescence was excited by a high-current nanosecond electron beam. Cathodoluminescence spectra were measured in the temperature range of samples from 90 to 800 K. The obtained cathodoluminescence spectra were approximated and decomposed into Gaussian components.
The emission spectra of low-impurity diamond samples irradiated with electron beams of different densities were studied. Cherenkov radiation was obtained in all studied samples with an increase in the beam current density by more than 30%. The appearance of an excitonic band in the emission spectrum of one of the samples was detected with increasing beam current density.
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