Presentation 2014-01-24
Optically pumped lasing action in hexagonal GaN microdisk array fabricated via top-down process
Sho Suzuki, Tetsuya Kouno, Koji Yamano, Katsumi Kishino, Kazuhiko Hara,
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Abstract(in English) Hexagonal GaN microdisk array was fabricated by an electron-beam lithography and an inductively coupled plasma reactive ion etching technique. The side length and height of the hexagonal GaN microdisk were approximately 1.5 μm and 900 nm, respectively. The array consisted of the microdisk with triangular lattice of 7.5 μm period. The optically pumped lasing action was obtained from the microdisk array at a wavelength of approximately 370 nm under an excitation source of an N_2 laser whose wavelength, pulse width, and repetition rate were 337.1 nm, 900 ps, and 10 Hz, respectively. The optical resonant system was assumed to be based on whispering galley mode family in a microdisk. This result shows that the microdisk array fabricated by top-down process with approximately 1.0 μm depth has optical resonant modes contributing to lasing action, proving that even the simple structures exhibit light confinement. Such structures have potential to dramatically improve the performance of light emitting devices.
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Keyword(in English) GaN / Microdisk / Whispering Gallery Mode / Top-Down Process
Paper # EID2013-15
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Committee EID
Conference Date 2014/1/17(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optically pumped lasing action in hexagonal GaN microdisk array fabricated via top-down process
Sub Title (in English)
Keyword(1) GaN
Keyword(2) Microdisk
Keyword(3) Whispering Gallery Mode
Keyword(4) Top-Down Process
1st Author's Name Sho Suzuki
1st Author's Affiliation Shizuoka University()
2nd Author's Name Tetsuya Kouno
2nd Author's Affiliation Shizuoka University
3rd Author's Name Koji Yamano
3rd Author's Affiliation Sophia University
4th Author's Name Katsumi Kishino
4th Author's Affiliation Sophia University
5th Author's Name Kazuhiko Hara
5th Author's Affiliation Sophia University
Date 2014-01-24
Paper # EID2013-15
Volume (vol) vol.113
Number (no) 408
Page pp.pp.-
#Pages 3
Date of Issue