Publication:
Processing of polycrystalline diamond surface by IR laser pulses without interior damage

Дата
2019
Авторы
Pivovarov, P. A.
Khomich, A. A.
Khmelnitsky, R. A.
Plotnichenko, V. G.
Kononenko, T. V.
Konov, V. I.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
© 2019 Elsevier Ltd A new approach to improve quality of diamond surface treatment by near IR short laser pulses is considered. The main problem being addressed is optical breakdown in diamond bulk occurred in the process of the surface ablation that causes multifold decrease of the machined surface transmittance. To eliminate laser-induced subsurface damaging, preliminary deposition of different absorbing coatings (titanium, graphite) on the diamond surface was proposed and experimentally tested. When the diamond surface is ablated by 10 ns laser pulses, both examined coatings significantly reduce the surface ablation threshold that makes possible to avoid completely the optical breakdowns in the diamond bulk. As a result, transmittance of the machined diamond drastically increases and surface roughness decreases. But the absorbing coatings have negligible influence on ablation of diamond by 1 ps pulses and don't solve the problem of the interior damaging under these conditions. Other essential differences in processing of the polycrystalline diamond by the picosecond and nanosecond pulses are also analyzed including uniformity of laser-induced graphitized layer and surface roughening.
Описание
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Цитирование
Processing of polycrystalline diamond surface by IR laser pulses without interior damage / Pivovarov, P.A. [et al.] // Optics and Laser Technology. - 2019. - 117. - P. 87-93. - 10.1016/j.optlastec.2019.04.014
URI
https://www.doi.org/10.1016/j.optlastec.2019.04.014
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85064166880&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000469891300010
 https://openrepository.mephi.ru/handle/123456789/16819
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