Abstract
For plasmonic surface optical applications, localized optical field distribution properties in the vicinity of gold particles on a silicon substrate by backward and forward irradiation are presented. It is technically difficult to fabricate nanostructure on the surface by conventional forward laser incidence to the substrate because gold nanoparticles easily aggregate to form double-layered particle arrays. We calculated enhanced optical field properties in order to pattern the substrate surface only with a template of the bottom-layered particle arrays in case that the backward irradiation of femtosecond laser is used in the system of aggregated double-layered gold nanoparticle arrays. With the backward irradiation, the optical field intensity in the substrate for the double-layered hexagonal arrays is found to be only 30% lower than the mono-layered system. Moreover, near-field cannot be generated with the forward irradiation. As a result, only the backward irradiation scheme is found to be effective for uniform surface nanopatterning at enhanced plasmonic near-field zones.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 7751 |
| DOIs | |
| Publication status | Published - 2010 |
| Event | 18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Sofia, Bulgaria Duration: 2010 Aug 30 → 2010 Sep 3 |
Other
| Other | 18th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers |
|---|---|
| Country | Bulgaria |
| City | Sofia |
| Period | 10/8/30 → 10/9/3 |
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Keywords
- gold particles
- nanofabrication
- near-field
- plasmonics
- surface patterning
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Nano-surface patterning by femtosecond laser for plasmonic surface optical applications. / Obara, Go; Miyanishi, Tomoya; Tanaka, Yuto; Terakawa, Mitsuhiro; Obara, Minoru.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7751 2010. 77511Y.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Nano-surface patterning by femtosecond laser for plasmonic surface optical applications
AU - Obara, Go
AU - Miyanishi, Tomoya
AU - Tanaka, Yuto
AU - Terakawa, Mitsuhiro
AU - Obara, Minoru
PY - 2010
Y1 - 2010
N2 - For plasmonic surface optical applications, localized optical field distribution properties in the vicinity of gold particles on a silicon substrate by backward and forward irradiation are presented. It is technically difficult to fabricate nanostructure on the surface by conventional forward laser incidence to the substrate because gold nanoparticles easily aggregate to form double-layered particle arrays. We calculated enhanced optical field properties in order to pattern the substrate surface only with a template of the bottom-layered particle arrays in case that the backward irradiation of femtosecond laser is used in the system of aggregated double-layered gold nanoparticle arrays. With the backward irradiation, the optical field intensity in the substrate for the double-layered hexagonal arrays is found to be only 30% lower than the mono-layered system. Moreover, near-field cannot be generated with the forward irradiation. As a result, only the backward irradiation scheme is found to be effective for uniform surface nanopatterning at enhanced plasmonic near-field zones.
AB - For plasmonic surface optical applications, localized optical field distribution properties in the vicinity of gold particles on a silicon substrate by backward and forward irradiation are presented. It is technically difficult to fabricate nanostructure on the surface by conventional forward laser incidence to the substrate because gold nanoparticles easily aggregate to form double-layered particle arrays. We calculated enhanced optical field properties in order to pattern the substrate surface only with a template of the bottom-layered particle arrays in case that the backward irradiation of femtosecond laser is used in the system of aggregated double-layered gold nanoparticle arrays. With the backward irradiation, the optical field intensity in the substrate for the double-layered hexagonal arrays is found to be only 30% lower than the mono-layered system. Moreover, near-field cannot be generated with the forward irradiation. As a result, only the backward irradiation scheme is found to be effective for uniform surface nanopatterning at enhanced plasmonic near-field zones.
KW - gold particles
KW - nanofabrication
KW - near-field
KW - plasmonics
KW - surface patterning
UR - http://www.scopus.com/inward/record.url?scp=79953248379&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79953248379&partnerID=8YFLogxK
U2 - 10.1117/12.881486
DO - 10.1117/12.881486
M3 - Conference contribution
SN - 9780819482426
VL - 7751
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -