Stimulated emission from ZnO nanorods

R. Hauschild; H. Lange; H. Priller; C. Klingshirn; R. Kling; A. Waag; H. J. Fan; M. Zacharias; H. Kalt

doi:10.1002/pssb.200564718

Stimulated emission from ZnO nanorods

R. Hauschild^*, H. Lange, H. Priller, C. Klingshirn, R. Kling, A. Waag, H. J. Fan, M. Zacharias, H. Kalt

^*Corresponding author for this work

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

49 Citations (Scopus)

Abstract

By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow nanorods their wave guiding quality causes a suppression of exciton-exciton scattering whereas no laser emission is detectable. Unlike their narrow counterparts, wide nanorods not only benefit from a larger overlap of the guided mode with the gain medium but a variation in VLS growth results in gold nanoparticles being present at the bottom of nanorods. Consequently, laser emission from single wide rods is evidenced up to 150 K. In addition to experimental studies we carry out 3D numerical simulations of the electric field distribution to evaluate the influence of gold nanoparticles at the nanorod/substrate interface. This finite element analysis confirms that gold leads to an enhancement of confinement within the resonator.

Original language	English
Pages (from-to)	853-857
Number of pages	5
Journal	Physica Status Solidi (B): Basic Research
Volume	243
Issue number	4
DOIs	https://doi.org/10.1002/pssb.200564718
Publication status	Published - Mar 2006
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1002/pssb.200564718

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title = "Stimulated emission from ZnO nanorods",

abstract = "By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow nanorods their wave guiding quality causes a suppression of exciton-exciton scattering whereas no laser emission is detectable. Unlike their narrow counterparts, wide nanorods not only benefit from a larger overlap of the guided mode with the gain medium but a variation in VLS growth results in gold nanoparticles being present at the bottom of nanorods. Consequently, laser emission from single wide rods is evidenced up to 150 K. In addition to experimental studies we carry out 3D numerical simulations of the electric field distribution to evaluate the influence of gold nanoparticles at the nanorod/substrate interface. This finite element analysis confirms that gold leads to an enhancement of confinement within the resonator.",

author = "R. Hauschild and H. Lange and H. Priller and C. Klingshirn and R. Kling and A. Waag and Fan, {H. J.} and M. Zacharias and H. Kalt",

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TY - JOUR

T1 - Stimulated emission from ZnO nanorods

AU - Hauschild, R.

AU - Lange, H.

AU - Priller, H.

AU - Klingshirn, C.

AU - Kling, R.

AU - Waag, A.

AU - Fan, H. J.

AU - Zacharias, M.

AU - Kalt, H.

PY - 2006/3

Y1 - 2006/3

N2 - By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow nanorods their wave guiding quality causes a suppression of exciton-exciton scattering whereas no laser emission is detectable. Unlike their narrow counterparts, wide nanorods not only benefit from a larger overlap of the guided mode with the gain medium but a variation in VLS growth results in gold nanoparticles being present at the bottom of nanorods. Consequently, laser emission from single wide rods is evidenced up to 150 K. In addition to experimental studies we carry out 3D numerical simulations of the electric field distribution to evaluate the influence of gold nanoparticles at the nanorod/substrate interface. This finite element analysis confirms that gold leads to an enhancement of confinement within the resonator.

AB - By means of time resolved spectroscopy we compare two samples of ZnO nanorods with respect to their suitability as stimulated emitters. In the case of narrow nanorods their wave guiding quality causes a suppression of exciton-exciton scattering whereas no laser emission is detectable. Unlike their narrow counterparts, wide nanorods not only benefit from a larger overlap of the guided mode with the gain medium but a variation in VLS growth results in gold nanoparticles being present at the bottom of nanorods. Consequently, laser emission from single wide rods is evidenced up to 150 K. In addition to experimental studies we carry out 3D numerical simulations of the electric field distribution to evaluate the influence of gold nanoparticles at the nanorod/substrate interface. This finite element analysis confirms that gold leads to an enhancement of confinement within the resonator.

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JF - Physica Status Solidi (B): Basic Research

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Stimulated emission from ZnO nanorods

Abstract

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