Near-IR subwavelength microdisk lasers

Q. Song; H. Cao; S. T. Ho; G. S. Solomon

doi:10.1063/1.3081106

Near-IR subwavelength microdisk lasers

Q. Song^*, H. Cao, S. T. Ho, G. S. Solomon

^*Corresponding author for this work

Electrical and Computer Engineering

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

98 Scopus citations

Abstract

We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary, and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and a modal volume of 0.97 (λ/n) 3.

Original language	English (US)
Article number	061109
Journal	Applied Physics Letters
Volume	94
Issue number	6
DOIs	https://doi.org/10.1063/1.3081106
State	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Near-IR subwavelength microdisk lasers",

abstract = "We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary, and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and a modal volume of 0.97 (λ/n) 3.",

author = "Q. Song and H. Cao and Ho, {S. T.} and Solomon, {G. S.}",

note = "Funding Information: This work is supported partly by NIST under the Grant No. 70NANB6H6162 and by NSF under the Grant No. ECCS-0823345. ",

year = "2009",

doi = "10.1063/1.3081106",

language = "English (US)",

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journal = "Applied Physics Letters",

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AU - Song, Q.

AU - Cao, H.

AU - Ho, S. T.

AU - Solomon, G. S.

N1 - Funding Information: This work is supported partly by NIST under the Grant No. 70NANB6H6162 and by NSF under the Grant No. ECCS-0823345.

PY - 2009

Y1 - 2009

N2 - We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary, and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and a modal volume of 0.97 (λ/n) 3.

AB - We report single-mode lasing in subwavelength GaAs disks under optical pumping. The disks are fabricated by standard photolithography and two steps of wet chemical etching. The simple fabrication method can produce submicron disks with good circularity, smooth boundary, and vertical sidewalls. The smallest lasing disks have a diameter of 627 nm and thickness of 265 nm. The ratio of the disk diameter to the vacuum lasing wavelength is about 0.7. Our numerical simulations confirm that the lasing modes are whispering-gallery modes with the azimuthal number as small as 4 and a modal volume of 0.97 (λ/n) 3.

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Near-IR subwavelength microdisk lasers

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