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Nanosecond pulsed laser induced self-organized nano-dots patterns on GaSb surface

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Title: Nanosecond pulsed laser induced self-organized nano-dots patterns on GaSb surface
Authors: Yoshida, Yutaka Browse this author
Oosawa, Kazuya Browse this author
Wajima, Jyunya Browse this author
Watanabe, Seiichi Browse this author →KAKEN DB
Matsuo, Yasutaka Browse this author →KAKEN DB
Kato, Takahiko Browse this author
Keywords: Nanosecond pulsed laser irradiation
Self organization
Nanodots patterns
Gallium antimonide
Issue Date: 15-Jul-2014
Publisher: Elsevier
Journal Title: Applied surface science
Volume: 307
Start Page: 24
End Page: 27
Publisher DOI: 10.1016/j.apsusc.2014.03.093
Abstract: We report a technique for formation of two-dimensional (2D) nanodot (ND) patterns on gaillium antimoide (GaSb) using a nanosecond pulsed laser irradiation with 532 nm wavelength. The patterns have formed because of the interference and the self-organization under energy deposition of the laser irradiation, which induced the growth of NDs on the local area. The NDs are grown and shrunken in the pattern by energy depositions. In the laser irradiation with average laser energy density of 35 mJ cm(-2), large and small NDs are formed on GaSb surface. The large NDs have grown average diameter from 160 to 200 nm with increase of laser pulses, and the small NDs have shrunken average diameter from 75 to 30 nm. The critical dot size is required about 107 nm for growth of the NDs in the patterns. Nanosecond pulsed laser irradiation can control the self-organized ND size on GaSb in air as a function of the laser pulses.
Type: article (author version)
Appears in Collections:創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉田 裕

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