Room temperature ultraviolet GaN metal-coated nanorod laser

Yu Cheng Hsu; Kuok Pan Sou; Shih Pang Chang; Kung Shu Hsu; M. H. Shih; Hao-Chung Kuo; Chun Yen Chang; Yuh Jen Cheng

doi:10.1063/1.4828997

Room temperature ultraviolet GaN metal-coated nanorod laser

Yu Cheng Hsu, Kuok Pan Sou, Shih Pang Chang, Kung Shu Hsu, M. H. Shih, Hao-Chung Kuo, Chun Yen Chang, Yuh Jen Cheng

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

7 Scopus citations

Abstract

This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm². The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes.

Original language	English
Article number	191102
Journal	Applied Physics Letters
Volume	103
Issue number	19
DOIs	https://doi.org/10.1063/1.4828997
State	Published - 4 Nov 2013

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title = "Room temperature ultraviolet GaN metal-coated nanorod laser",

abstract = "This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm2. The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes.",

author = "Hsu, {Yu Cheng} and Sou, {Kuok Pan} and Chang, {Shih Pang} and Hsu, {Kung Shu} and Shih, {M. H.} and Hao-Chung Kuo and Chang, {Chun Yen} and Cheng, {Yuh Jen}",

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doi = "10.1063/1.4828997",

language = "English",

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journal = "Applied Physics Letters",

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T1 - Room temperature ultraviolet GaN metal-coated nanorod laser

AU - Hsu, Yu Cheng

AU - Sou, Kuok Pan

AU - Chang, Shih Pang

AU - Hsu, Kung Shu

AU - Shih, M. H.

AU - Kuo, Hao-Chung

AU - Chang, Chun Yen

AU - Cheng, Yuh Jen

PY - 2013/11/4

Y1 - 2013/11/4

N2 - This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm2. The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes.

AB - This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm2. The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes.

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U2 - 10.1063/1.4828997

DO - 10.1063/1.4828997

M3 - Article

AN - SCOPUS:84889779144

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 19

M1 - 191102

ER -

Room temperature ultraviolet GaN metal-coated nanorod laser

Abstract

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