Speaker
Dr
Boris Shulgin
(Professor)
Description
Optical filters of vision, IR- and UV-regions are found of wide application for
science investigation systems, for medical diagnostic equipments, for chemical
analytic equipments, for thermal imaging systems, for security systems and sensors
of burglar alarm systems and so on. The base materials for creation of modern
optical filters are thin organic polymer films. The main disadvantages of such
materials are low mechanical properties (stability of abrasion), low radiation and
thermal stabilities and high cost.
In present work the new inorganic optical filters on the base of planar and fiber
heterostructures are proposed. The creation of heterostructures is made by means of
irradiation of LiF or NaF crystals by ion beams with special procedure. As a result
thin surface layers of crystals (bulk or fiber) are modified and become opaque for
light. We can obtain optical filters for visible, IR or UV-regions depending on
irradiation procedure. It is made due to control forming of different color centers
(F, F2, F2+, F2–, F3+) in compliance with model of defect evolution under ion
irradiation, which is proposed by us too. The cost of suggested filter is much lower
than cost of polymer filters. Moreover, suggested inorganic filters have higher
stability of abrasion and higher radiation and thermal stabilities.
The methods of creation of heterostructures and optical filter are protected by two
applications for RUS-patents #2005113587 and #2004123343 (patent holder is Ural
State Technical University–UPI (Russia, Ekaterinburg)). We hope our invention will
come useful for humanity.
Author
Dr
Boris Shulgin
(Professor)
Co-authors
Dr
Alexander Kruzhalov
(Head of department, professor)
Dr
Alexander Tcherepanov
(Senior lecturer)
Ms
Alla Anipko
(Graduate student)
Dr
Feodor Neshov
(Senior scientist)
Dr
Tatyana Koroleva
(Senior scientist)
Dr
Vladimir Ivanov
(Associated professor)
Dr
Vladimir Petrov
(Associated professor)
