Laser damage studies of tantala and zirconia sol-gel coatings

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:552078

Spriggs, D M ^[1]; Sermon, P A; Vong, M S.W.; Sun, Y ^[2]

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1. AWE, Reading, Berkshire (United Kingdom)
2. Brunel Univ., Uxbridge, Middlesex (United Kingdom)

Tantala and zirconia sol gel coatings, with simple preparation methods and high single layer laser damage thresholds at 1064nm and 355nm have been investigated. The sols are ethanol based and the coatings have high refractive indices and abrasion resistance. In situ microscopy and interferometric images suggest a thermal mechanism for damage at 1064nm and inter-particle bonding, high strength and low porosity are linked to the high damage thresholds observed. The absence of exothermic reactions in the coatings at high temperatures and the closeness of absorption band edges to the laser wavelength are also considered to be factors influencing damage thresholds.

• Research Organization: International Society for Optical Engineering, Washington, DC (United States)
• OSTI ID: 552078
• Report Number(s): CONF-9510106-Vol.2714; TRN: 97:005737-0055
• Resource Relation: Conference: 27. annual symposium on optical materials for high power lasers, Boulder, CO (United States), 30 Oct - 1 Nov 1995; Other Information: PBD: [1996]; Related Information: Is Part Of Laser-induced damage in optical materials: 1995. Twenty-seventh annual Boulder damage symposium, proceedings; Bennett, H.E.; Guenther, A.H.; Kozlowski, M.R.; Newnam, B.E.; Soileau, M.J. [eds.]; PB: 794 p.
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
COLLOIDS
DAMAGE
COATINGS
OPTICAL SYSTEMS
TANTALUM OXIDES
ZIRCONIUM OXIDES
SOL-GEL PROCESS
THIN FILMS
LASER RADIATION
NEODYMIUM LASERS