Realization of UV Plasmonic Nanolasers With Extremely Small Mode Volume

Bo Tsun Chou; Yu Hsun Chou; Chih Kai Chiang; Yen Mo Wu; Tzy Rong Lin; Sheng Di Lin; Tien Chang Lu

doi:10.1109/JSTQE.2015.2448651

Realization of UV Plasmonic Nanolasers With Extremely Small Mode Volume

Bo Tsun Chou, Yu Hsun Chou, Chih Kai Chiang, Yen Mo Wu, Tzy Rong Lin, Sheng Di Lin, Tien Chang Lu

Department of Photonics

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

6 Citations (Scopus)

Abstract

It is difficult to operate plasmonic nanolasers on silver films in the ultraviolet regime owing to the bending-back effect of surface plasmon dispersion. In this paper, we report on plasmonic lasers comprised of a ZnO nanowire lying on a single-crystalline silver film with a SiO₂ spacer layer. The silver can strongly shrink the mode volume, thereby boosting the Purcell factor. Meanwhile, the SiO₂ spacer thickness is optimized to adjust the surface plasmon dispersion curve so that the lasing wavelength can be located at a large dispersion region, thereby achieving a large group index of 55, an ultra-small effective mode volume of 3.5 × 10^-3λ³, and low-threshold of 11 MW/cm².

Original language	English
Article number	7160801
Pages (from-to)	399-404
Number of pages	6
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	21
Issue number	6
DOIs	https://doi.org/10.1109/JSTQE.2015.2448651
Publication status	Published - 2015 Nov 1

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/JSTQE.2015.2448651

Cite this

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title = "Realization of UV Plasmonic Nanolasers With Extremely Small Mode Volume",

abstract = "It is difficult to operate plasmonic nanolasers on silver films in the ultraviolet regime owing to the bending-back effect of surface plasmon dispersion. In this paper, we report on plasmonic lasers comprised of a ZnO nanowire lying on a single-crystalline silver film with a SiO2 spacer layer. The silver can strongly shrink the mode volume, thereby boosting the Purcell factor. Meanwhile, the SiO2 spacer thickness is optimized to adjust the surface plasmon dispersion curve so that the lasing wavelength can be located at a large dispersion region, thereby achieving a large group index of 55, an ultra-small effective mode volume of 3.5 × 10-3λ3, and low-threshold of 11 MW/cm2.",

author = "Chou, {Bo Tsun} and Chou, {Yu Hsun} and Chiang, {Chih Kai} and Wu, {Yen Mo} and Lin, {Tzy Rong} and Lin, {Sheng Di} and Lu, {Tien Chang}",

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AU - Chou, Bo Tsun

AU - Chou, Yu Hsun

AU - Chiang, Chih Kai

AU - Wu, Yen Mo

AU - Lin, Tzy Rong

AU - Lin, Sheng Di

AU - Lu, Tien Chang

PY - 2015/11/1

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AB - It is difficult to operate plasmonic nanolasers on silver films in the ultraviolet regime owing to the bending-back effect of surface plasmon dispersion. In this paper, we report on plasmonic lasers comprised of a ZnO nanowire lying on a single-crystalline silver film with a SiO2 spacer layer. The silver can strongly shrink the mode volume, thereby boosting the Purcell factor. Meanwhile, the SiO2 spacer thickness is optimized to adjust the surface plasmon dispersion curve so that the lasing wavelength can be located at a large dispersion region, thereby achieving a large group index of 55, an ultra-small effective mode volume of 3.5 × 10-3λ3, and low-threshold of 11 MW/cm2.

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Realization of UV Plasmonic Nanolasers With Extremely Small Mode Volume

Abstract

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