Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals

Tzu Ming Liu; Ja Yu Lu; Hung Ping Chen; Chung Chiu Kuo; Meng Ju Yang; Chih Wei Lai; Pi Tai Chou; Ming Hao Chang; Hsiang Lin Liu; Yu Tai Li; Ci Ling Pan; Shih Hung Lin; Chieh Hsiung Kuan; Chi Kuang Sun

doi:10.1063/1.2891062

Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals

Tzu Ming Liu, Ja Yu Lu, Hung Ping Chen, Chung Chiu Kuo, Meng Ju Yang, Chih Wei Lai, Pi Tai Chou, Ming Hao Chang, Hsiang Lin Liu, Yu Tai Li, Ci Ling Pan, Shih Hung Lin, Chieh Hsiung Kuan, Chi Kuang Sun^*

^*Corresponding author for this work

Department of Physics

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

14 Citations (Scopus)

Abstract

Taking advantage of the specific core-shell charge separation structure in the CdSeCdTe core-shell type-II nanocrystals, we experimentally observed and verified the existence of the resonance-enhanced dipolar interaction between terahertz photons and their corresponding confined acoustic phonons. From the measured terahertz transmission spectra, we found that the photon frequency of the terahertz resonant absorption is inversely proportional to the diameter D of the nanocrystals and agrees with that of dipolar active l=1, n=0 confined acoustic modes. The corresponding absorption cross section shows a D4 dependence, supporting a charged simple-harmonic-oscillator model. These facts verify the occurrence of dipolar interaction between terahertz photons and confined terahertz acoustic phonons.

Original language	English
Article number	093122
Journal	Applied Physics Letters
Volume	92
Issue number	9
DOIs	https://doi.org/10.1063/1.2891062
Publication status	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Liu, T. M., Lu, J. Y., Chen, H. P., Kuo, C. C., Yang, M. J., Lai, C. W., Chou, P. T., Chang, M. H., Liu, H. L., Li, Y. T., Pan, C. L., Lin, S. H., Kuan, C. H., & Sun, C. K. (2008). Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals. Applied Physics Letters, 92(9), Article 093122. https://doi.org/10.1063/1.2891062

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title = "Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals",

abstract = "Taking advantage of the specific core-shell charge separation structure in the CdSeCdTe core-shell type-II nanocrystals, we experimentally observed and verified the existence of the resonance-enhanced dipolar interaction between terahertz photons and their corresponding confined acoustic phonons. From the measured terahertz transmission spectra, we found that the photon frequency of the terahertz resonant absorption is inversely proportional to the diameter D of the nanocrystals and agrees with that of dipolar active l=1, n=0 confined acoustic modes. The corresponding absorption cross section shows a D4 dependence, supporting a charged simple-harmonic-oscillator model. These facts verify the occurrence of dipolar interaction between terahertz photons and confined terahertz acoustic phonons.",

author = "Liu, {Tzu Ming} and Lu, {Ja Yu} and Chen, {Hung Ping} and Kuo, {Chung Chiu} and Yang, {Meng Ju} and Lai, {Chih Wei} and Chou, {Pi Tai} and Chang, {Ming Hao} and Liu, {Hsiang Lin} and Li, {Yu Tai} and Pan, {Ci Ling} and Lin, {Shih Hung} and Kuan, {Chieh Hsiung} and Sun, {Chi Kuang}",

note = "Funding Information: This project is sponsored by the National Science Council of Taiwan under Grant Nos. NSC96-2120-M-002-014 and NSC 96-2628-E-002-043-MY3 and by the National Taiwan University Research Center for Medical Excellence. We thank D. B. Murray and L. Saviot for technical discussions on the dipolar modes in a nanosphere. ",

year = "2008",

doi = "10.1063/1.2891062",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

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T1 - Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals

AU - Liu, Tzu Ming

AU - Lu, Ja Yu

AU - Chen, Hung Ping

AU - Kuo, Chung Chiu

AU - Yang, Meng Ju

AU - Lai, Chih Wei

AU - Chou, Pi Tai

AU - Chang, Ming Hao

AU - Liu, Hsiang Lin

AU - Li, Yu Tai

AU - Pan, Ci Ling

AU - Lin, Shih Hung

AU - Kuan, Chieh Hsiung

AU - Sun, Chi Kuang

N1 - Funding Information: This project is sponsored by the National Science Council of Taiwan under Grant Nos. NSC96-2120-M-002-014 and NSC 96-2628-E-002-043-MY3 and by the National Taiwan University Research Center for Medical Excellence. We thank D. B. Murray and L. Saviot for technical discussions on the dipolar modes in a nanosphere.

PY - 2008

Y1 - 2008

N2 - Taking advantage of the specific core-shell charge separation structure in the CdSeCdTe core-shell type-II nanocrystals, we experimentally observed and verified the existence of the resonance-enhanced dipolar interaction between terahertz photons and their corresponding confined acoustic phonons. From the measured terahertz transmission spectra, we found that the photon frequency of the terahertz resonant absorption is inversely proportional to the diameter D of the nanocrystals and agrees with that of dipolar active l=1, n=0 confined acoustic modes. The corresponding absorption cross section shows a D4 dependence, supporting a charged simple-harmonic-oscillator model. These facts verify the occurrence of dipolar interaction between terahertz photons and confined terahertz acoustic phonons.

AB - Taking advantage of the specific core-shell charge separation structure in the CdSeCdTe core-shell type-II nanocrystals, we experimentally observed and verified the existence of the resonance-enhanced dipolar interaction between terahertz photons and their corresponding confined acoustic phonons. From the measured terahertz transmission spectra, we found that the photon frequency of the terahertz resonant absorption is inversely proportional to the diameter D of the nanocrystals and agrees with that of dipolar active l=1, n=0 confined acoustic modes. The corresponding absorption cross section shows a D4 dependence, supporting a charged simple-harmonic-oscillator model. These facts verify the occurrence of dipolar interaction between terahertz photons and confined terahertz acoustic phonons.

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Resonance-enhanced dipolar interaction between terahertz photons and confined acoustic phonons in nanocrystals

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