Nanostructure and microripple formation on the surface of sapphire with femtosecond laser pulses

Daejin Kim; Wooyoung Jang; Taehong Kim; Ayoung Moon; Ki Soo Lim; Myeongkyu Lee; Ik Bu Sohn; Sungho Jeong

doi:10.1063/1.4707951

Nanostructure and microripple formation on the surface of sapphire with femtosecond laser pulses

Daejin Kim, Wooyoung Jang, Taehong Kim, Ayoung Moon, Ki Soo Lim, Myeongkyu Lee, Ik Bu Sohn, Sungho Jeong

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We have demonstrated the creation of polarization-dependent nanogratings with a period of about 250 nm on the surface of sapphire by scanning the femtosecond laser beam with appropriate irradiation conditions. Laser fluence range for nanograting self-formation was very narrow in the slow scan mode. The grating depth variation was observed with atomic force microscope image analysis. To see the composition distribution in the nanostructure, we carried out the Auger signal analysis. In addition, we found a new periodic structure with a period of a few μm and discussed the complex formation mechanism.

Original language	English
Article number	093518
Journal	Journal of Applied Physics
Volume	111
Issue number	9
DOIs	https://doi.org/10.1063/1.4707951
Publication status	Published - 2012 May 1

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2010-0013646). The authors are grateful to S. J. Kwon for his support in the experiments.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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Cite this

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title = "Nanostructure and microripple formation on the surface of sapphire with femtosecond laser pulses",

abstract = "We have demonstrated the creation of polarization-dependent nanogratings with a period of about 250 nm on the surface of sapphire by scanning the femtosecond laser beam with appropriate irradiation conditions. Laser fluence range for nanograting self-formation was very narrow in the slow scan mode. The grating depth variation was observed with atomic force microscope image analysis. To see the composition distribution in the nanostructure, we carried out the Auger signal analysis. In addition, we found a new periodic structure with a period of a few μm and discussed the complex formation mechanism.",

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AU - Kim, Daejin

AU - Jang, Wooyoung

AU - Kim, Taehong

AU - Moon, Ayoung

AU - Lim, Ki Soo

AU - Lee, Myeongkyu

AU - Sohn, Ik Bu

AU - Jeong, Sungho

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2010-0013646). The authors are grateful to S. J. Kwon for his support in the experiments.

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N2 - We have demonstrated the creation of polarization-dependent nanogratings with a period of about 250 nm on the surface of sapphire by scanning the femtosecond laser beam with appropriate irradiation conditions. Laser fluence range for nanograting self-formation was very narrow in the slow scan mode. The grating depth variation was observed with atomic force microscope image analysis. To see the composition distribution in the nanostructure, we carried out the Auger signal analysis. In addition, we found a new periodic structure with a period of a few μm and discussed the complex formation mechanism.

AB - We have demonstrated the creation of polarization-dependent nanogratings with a period of about 250 nm on the surface of sapphire by scanning the femtosecond laser beam with appropriate irradiation conditions. Laser fluence range for nanograting self-formation was very narrow in the slow scan mode. The grating depth variation was observed with atomic force microscope image analysis. To see the composition distribution in the nanostructure, we carried out the Auger signal analysis. In addition, we found a new periodic structure with a period of a few μm and discussed the complex formation mechanism.

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Nanostructure and microripple formation on the surface of sapphire with femtosecond laser pulses

Abstract

Bibliographical note

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