Photo-Structuring of Silver-Oxide Films by Using Femtosecond Laser Pulses

G. J. Lee, Y.-P. Lee, S. G. Jung, C. K. Hwangbo, S. S. Kim, H. Cheong and C. S. Yoon

J. Korean Phys.Soc. 53,1414 [doi: 10.3938/jkps.53.1414 | PDF Download]

We investigated the photo-structuring of silver-oxide films by using femtosecond laser pulses. The silver-oxide films were prepared by magnetron sputtering. The physical properties of the prepared silver-oxide films were investigated by using absorption spectroscopy. For the sample that underwent the photo-structuring of the silver-oxide films by two interfering femtosecond laser pulses, scanning and transmission electron microscopy measurements showed that a metal grating was formed through the photoreduction of silver oxide. Micro-photoluminescence spectroscopy showed spationally selective photoluminescence from the laser-modified region. In order to find the nature of laser-modified region, we compared the metal grating formed by laser interference structuring with the thermally annealed film.