Regularities of Influence of Electron-beam Technology Modes on the Performance Characteristics of Optical Elements

Authors I.V. Yatsenko1 , V.S. Antonyuk2 , V.A. Vashchenko1, O.V. Kyrychenko3, O.M. Tishchenko3

1Cherkasy State Technological University, 460, Shevchenka Blvd, 18030 Cherkasy, Ukraine

2National Technical University of Ukraine, 37, Peremohy Prosp., 03056 Kyiv, Ukraine

3Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine, 8, Onoprienka St., 18034 Cherkasy, Ukraine

Issue Volume 11, Year 2019, Number 2
Dates Received 09 January 2019; revised manuscript received 04 April 2019; published online 15 April 2019
Citation I.V. Yatsenko, V.S. Antonyuk, V.A. Vashchenko, et al., J. Nano- Electron. Phys. 11 No 2, 02014 (2019)
PACS Number(s) 42.79. Bh
Keywords Optical-electronic devices, Optical glass, Optical ceramics, Electron beam (3) , Performance characteristics.

Experimental researches and new regularities of influence of electron-beam processing modes on quantitative indexes of quality of surface layers of optical glass and ceramics elements are carried out: purity and smoothness of surface – the surface of optical glass elements is completely free of defects, at the same time, there is an increase of purity class, the reduction of microroughness to 0.4-1.3 nm; thickness of melted layer; structural change and chemical composition; squeezing tension and thickness of strengthened layers – in the optical ceramics elements there appear compression tensions up to 30-70 MPa in strengthened surface layers of 90-210 microns thick. Optimal modes of electron-beam technology are found (thermal impact density 7∙106-8∙108 W/m2 of electron beam, travel speed 5∙10 – 3-5∙10 – 2 m/s), which improve the performance characteristics of optical elements: increase of microhardness of the surface and increase of the strength of surface layers, as well as spectral transmission coefficient; increase of elements stability to external thermal and mechanical influences by their exploitation. Herein, there is a temperature increase of surface layers of elements and a rise in their thermal physical properties: volumetric heat capacity, thermal conductivity coefficient, thermal coefficient of linear expansion. The obtained experimental research results and developed on their basis methods of improvement of performance characteristics of optical elements found their practical use and introduction in a wide range of Ukrainian enterprises, which allowed to increase the accuracy and broaden measurement ranges of impulsive range finders for 7-15 %; to increase the probability of flawless performance of optical fairings of infrared guidance and observation devices and fiber-optic beam guides of laser medical devices while performing at 10-20 %.

List of References