Fiber laser cleaning of metal mirror surfaces for optical diagnostic systems of the ITER

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778815100063· OSTI ID:22471969

Alexandrova, A. S. ^[1]; Buzhinsky, O. I. ^[2]; Gubskiy, K. L.; Kazieva, T. V.; Savchenkov, A. V. ^[1]; Tugarinov, S. N. ^[2]

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1. National Research Nuclear University MEPhI (Russian Federation)
2. State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research (Russian Federation)

The results of experimental studies into efficiency of removal of films with a complex composition from metal mirrors by pulsed fiber laser irradiation are presented. It is shown that the initial reflectivity of optical elements can be restored by the selection of modes of irradiation impacting the surface with the sputtered film. Effective cleaning is performed by radiation with a power density lower than 10{sup 7} W/cm{sup 2}. The removal of contaminations at such a relatively low power density occurs in a solid phase, owing to which the thermal effect on the mirror is insignificant.

• OSTI ID: 22471969
• Journal Information: Physics of Atomic Nuclei, Vol. 78, Issue 10; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CLEANING
FIBERS
IRRADIATION
ITER TOKAMAK
LASER RADIATION
LASERS
METALS
MIRRORS
PLASMA DIAGNOSTICS
PULSED IRRADIATION
REFLECTIVITY
SPUTTERING
SURFACES