Plasmonic hotspots on laser-treated AgOx thin film: A novel nanofabrication technique for plasmonic substrate

Ming Lun Tseng, Yao Wei Huang, Min Kai Hsiao, Hsin Wei Huang, Hao Ming Chen, Cheng Hung Chu, Nien Nan Chu, You Je He, Chia Min Chang, Yu Lim Chen, Wei Chih Lin, Ru Shi Liu, Ding Wei Huang, Hai Pang Chiang, Greg Sun, Din Ping Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Using a femtosecond laser, the laser-direct-writing technique has been transformed into a highly efficient method that can rapidly process glass substrate into structures of Ag nanoparticles that provide plasmonic enhancement. The processed AgOx thin films showed enhanced optical absorption over a broad spectral range. The plasmonic hotspots on the treated area are also probed with dyed polymer beads drifting in the water solution. Multilevel Raman enhancements can also be achieved by varying the incident femtosecond laser power. Moreover, the processing rate is much faster than other reported laser-direct-writing techniques with either continuous or nano-second lasers. This proposed technique has great potential for the fabrication of plasmon-active substrate with high throughput and efficiency.

Original languageEnglish
Title of host publicationFrontiers in Optics, FIO 2012
StatePublished - 2012
EventFrontiers in Optics, FIO 2012 - Rochester, NY, United States
Duration: 14 Oct 201218 Oct 2012

Publication series

NameFrontiers in Optics, FIO 2012


ConferenceFrontiers in Optics, FIO 2012
CountryUnited States
CityRochester, NY

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