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Elementy optyczne pracujące w widmowym zakresie obejmującym ultrafiolet próżniowy i miękkie promieniowanie rentgenowskie

Wardzińska Martyna, Wachulak Przemysław

Biuletyn Wojskowej Akademii Technicznej

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2022

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Vol. 71, nr 2

49--83

PL

W artykule zawarto podstawy fizyczne i przegląd elementów optycznych do pracy w zakresie obejmującym ultrafiolet próżniowy (eUV) oraz miękkie promieniowanie rentgenowskie (SXr). Pierwszy rozdział obejmuje wprowadzenie do analizowanej tematyki i podstawy fizyczne. W drugim rozdziale przedstawione zostały podstawy działania optyki związanej z zakresem eUV/SXr wraz z wyróżnieniem jej wad oraz zalet. W trzecim rozdziale szczegółowo omówiono elementy optyczne, takie jak: filtry optyczne, zwierciadła (m.in. wielowarstwowe), siatki dyfrakcyjne, płytki strefowe Fresnela oraz rozwiązania hybrydowe. rozdział czwarty przedstawia szeroki obszar zastosowań optyki eUV/SXr. W ostatnim rozdziale znajduje się podsumowanie przedstawionych wcześniej informacji.

EN

The article presents the physical basis and overview of optical elements for the range including extreme ultraviolet (eUV) and soft X-ray (SXr). The first chapter contains an introduction to the subject under review and physical fundamentals. The second chapter presents the basics of optics for the eUV/SXr range, along with highlighting its advantages and disadvantages. The third chapter discusses in detail optical components such as optical filters, mirrors (including multilayers), diffraction gratings, Fresnel zone plates, and hybrid solutions. The fourth chapter presents a wide range of applications of eUV/SXr optics. The final chapter summarises the information presented earlier.

2

Enlarging the bandwidth of a two-dimensional photonic crystal mirror in the visible range

Voznyuk I., Boutami S., Glière A.

Optica Applicata

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2017

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Vol. 47, nr 2

175--182

EN

The spectral properties of reflective mirrors based on a classic design of two-dimensional subwavelength photonic crystal are investigated numerically in the visible wavelength range. These reflectors are meant to be made of silica and silicon nitride. A novel numerical strategy is proposed in order to determine the optimal value of the grating fill factor yielding an efficient level of reflectance through the maximal range of wavelengths.

3

The influence of coating fabrication processes on the optical efficiency of replicated Moiré diffraction gratings

Ribeiro J. E.

Metrology and Measurement Systems

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2013

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Vol. 20, nr 1

119-126

EN

One of the most important parameters in the study of diffraction gratings is their optical efficiency. This paper analyzes the different manufacturing processes to cover gratings of Moiré interferometry and their influence on the quality and absolute efficiency of replicated gratings on the surfaces of specimens. The Moiré interferometry is a field measurement technique that has been used in many different fields such as applied mechanics, microelectronics, biomechanics or micromechanics, hence the importance of this study. The applied reflected coating was done by sputtering and aluminium vaporization processes. In this work different materials and thickness layers were analyzed. The obtained coatings have a high degree of reflectivity on the replicated gratings.

4

Selectivity properties of circular grating DFB/DBR lasers with phase shift.

Szczepański P., Tarasiuk S.

Optica Applicata

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2001

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Vol. 31, nr 2

351-371

EN

A threshold analysis is presented for circular grating distributed feedback (CG-DFB) and circular grating distributed Bragg reflector (CG-DBR) lasers with additional phase shift introduced in the grating region. It is found that the proper value and position of the additional phase shift reduces the threshold gain of the laser structure and also improves its mode selectivity