SURFACE-PLASMON ENHANCED LASER-ABLATION OF THIN METAL-FILMS


Autoria(s): DAWSON, P; CAIRNS, G
Data(s)

01/06/1994

Resumo

<p>Surface plasmon enhancement of laser ablation of thin Al films is examined with a view to its application in metal film patterning and nano-structuring. Al films, deposited on silica prisms, are first characterized by attenuated total reflection using a broadband UV source and appropriate interference filter. The films are subsequently subjected to excimer laser radiation of wavelength 248 nm under conditions both of direct incidence from the air side of the film, and of surface plasmon excitation in which light is incident through the prism at greater than critical angle. For a given level of ablation damage in a particular film the fluence required using the surface plasmon technique is 3-5 times less than that needed when direct incidence is used. This is roughly in line with the energy absorbed in the film. From a practical standpoint it is clear that ablation of metal films can be achieved with much lower fluences than has hitherto been possible, thus reducing the requirements on laser output and relaxing the power handling constraints on any input optical elements.</p>

Identificador

http://pure.qub.ac.uk/portal/en/publications/surfaceplasmon-enhanced-laserablation-of-thin-metalfilms(c59dd7e6-d074-4794-aab0-faa061e08fdd).html

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

DAWSON , P & CAIRNS , G 1994 , ' SURFACE-PLASMON ENHANCED LASER-ABLATION OF THIN METAL-FILMS ' Journal of Modern Optics , vol 41 , no. 6 , pp. 1287-1294 .

Palavras-Chave #VIBRATIONAL-EXCITATION #INDUCED DESORPTION #SIZE MANIPULATION #PHOTODESORPTION #DEPOSITION #PARTICLES
Tipo

article