Optically Modulated Multiband Terahertz Perfect Absorber

Huseyin R. Seren, George R. Keiser, Lingyue Cao, Jingdi Zhang, Andrew Strikwerda, Kebin Fan, Grace D. Metcalfe, Michael Wraback, Xin Zhang, Richard D. Averitt

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Development of tunable, dynamic, and broad bandwidth metamaterialdesigns is a keystone objective for metamaterials research, necessary for thefuture viability of metamaterial optics and devices across the electromagneticspectrum. Yet, overcoming the inherently localized, narrow bandwidth, andstatic response of resonant metamaterials continues to be a challengingendeavor. Resonant perfect absorbers have flourished as one of the mostpromising metamaterial devices with applications ranging from power har-vesting to terahertz imaging. Here, an optically modulated resonant perfectabsorber is presented. Utilizing photo-excited free carriers in silicon padsplaced in the capacitive gaps of split ring resonators, a dynamically modu-lated perfect absorber is designed and fabricated to operate in reflection.Large modulation depth (38% and 91%) in two absorption bands (with 97%and 92% peak absorption) is demonstrated, which correspond to the LC(0.7 THz) and dipole (1.1 THz) modes of the split ring resonators.
Original languageEnglish
JournalAdvanced Optical Materials
Volume2
Issue number12
Pages (from-to)1221–1226
ISSN2195-1071
DOIs
Publication statusPublished - 2014

Keywords

  • Metamaterials
  • Metamaterial absorbers
  • Optical modulation
  • Optics
  • Terahertz

Cite this

Seren, H. R., Keiser, G. R., Cao, L., Zhang, J., Strikwerda, A., Fan, K., ... Averitt, R. D. (2014). Optically Modulated Multiband Terahertz Perfect Absorber. Advanced Optical Materials, 2(12), 1221–1226. https://doi.org/10.1002/adom.201400197
Seren, Huseyin R. ; Keiser, George R. ; Cao, Lingyue ; Zhang, Jingdi ; Strikwerda, Andrew ; Fan, Kebin ; Metcalfe, Grace D. ; Wraback, Michael ; Zhang, Xin ; Averitt, Richard D. / Optically Modulated Multiband Terahertz Perfect Absorber. In: Advanced Optical Materials. 2014 ; Vol. 2, No. 12. pp. 1221–1226.
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abstract = "Development of tunable, dynamic, and broad bandwidth metamaterialdesigns is a keystone objective for metamaterials research, necessary for thefuture viability of metamaterial optics and devices across the electromagneticspectrum. Yet, overcoming the inherently localized, narrow bandwidth, andstatic response of resonant metamaterials continues to be a challengingendeavor. Resonant perfect absorbers have flourished as one of the mostpromising metamaterial devices with applications ranging from power har-vesting to terahertz imaging. Here, an optically modulated resonant perfectabsorber is presented. Utilizing photo-excited free carriers in silicon padsplaced in the capacitive gaps of split ring resonators, a dynamically modu-lated perfect absorber is designed and fabricated to operate in reflection.Large modulation depth (38{\%} and 91{\%}) in two absorption bands (with 97{\%}and 92{\%} peak absorption) is demonstrated, which correspond to the LC(0.7 THz) and dipole (1.1 THz) modes of the split ring resonators.",
keywords = "Metamaterials, Metamaterial absorbers, Optical modulation, Optics, Terahertz",
author = "Seren, {Huseyin R.} and Keiser, {George R.} and Lingyue Cao and Jingdi Zhang and Andrew Strikwerda and Kebin Fan and Metcalfe, {Grace D.} and Michael Wraback and Xin Zhang and Averitt, {Richard D.}",
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Seren, HR, Keiser, GR, Cao, L, Zhang, J, Strikwerda, A, Fan, K, Metcalfe, GD, Wraback, M, Zhang, X & Averitt, RD 2014, 'Optically Modulated Multiband Terahertz Perfect Absorber', Advanced Optical Materials, vol. 2, no. 12, pp. 1221–1226. https://doi.org/10.1002/adom.201400197

Optically Modulated Multiband Terahertz Perfect Absorber. / Seren, Huseyin R.; Keiser, George R.; Cao, Lingyue; Zhang, Jingdi; Strikwerda, Andrew; Fan, Kebin; Metcalfe, Grace D. ; Wraback, Michael; Zhang, Xin; Averitt, Richard D.

In: Advanced Optical Materials, Vol. 2, No. 12, 2014, p. 1221–1226.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Optically Modulated Multiband Terahertz Perfect Absorber

AU - Seren, Huseyin R.

AU - Keiser, George R.

AU - Cao, Lingyue

AU - Zhang, Jingdi

AU - Strikwerda, Andrew

AU - Fan, Kebin

AU - Metcalfe, Grace D.

AU - Wraback, Michael

AU - Zhang, Xin

AU - Averitt, Richard D.

PY - 2014

Y1 - 2014

N2 - Development of tunable, dynamic, and broad bandwidth metamaterialdesigns is a keystone objective for metamaterials research, necessary for thefuture viability of metamaterial optics and devices across the electromagneticspectrum. Yet, overcoming the inherently localized, narrow bandwidth, andstatic response of resonant metamaterials continues to be a challengingendeavor. Resonant perfect absorbers have flourished as one of the mostpromising metamaterial devices with applications ranging from power har-vesting to terahertz imaging. Here, an optically modulated resonant perfectabsorber is presented. Utilizing photo-excited free carriers in silicon padsplaced in the capacitive gaps of split ring resonators, a dynamically modu-lated perfect absorber is designed and fabricated to operate in reflection.Large modulation depth (38% and 91%) in two absorption bands (with 97%and 92% peak absorption) is demonstrated, which correspond to the LC(0.7 THz) and dipole (1.1 THz) modes of the split ring resonators.

AB - Development of tunable, dynamic, and broad bandwidth metamaterialdesigns is a keystone objective for metamaterials research, necessary for thefuture viability of metamaterial optics and devices across the electromagneticspectrum. Yet, overcoming the inherently localized, narrow bandwidth, andstatic response of resonant metamaterials continues to be a challengingendeavor. Resonant perfect absorbers have flourished as one of the mostpromising metamaterial devices with applications ranging from power har-vesting to terahertz imaging. Here, an optically modulated resonant perfectabsorber is presented. Utilizing photo-excited free carriers in silicon padsplaced in the capacitive gaps of split ring resonators, a dynamically modu-lated perfect absorber is designed and fabricated to operate in reflection.Large modulation depth (38% and 91%) in two absorption bands (with 97%and 92% peak absorption) is demonstrated, which correspond to the LC(0.7 THz) and dipole (1.1 THz) modes of the split ring resonators.

KW - Metamaterials

KW - Metamaterial absorbers

KW - Optical modulation

KW - Optics

KW - Terahertz

U2 - 10.1002/adom.201400197

DO - 10.1002/adom.201400197

M3 - Journal article

VL - 2

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EP - 1226

JO - Advanced Optical Materials

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SN - 2195-1071

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ER -

Seren HR, Keiser GR, Cao L, Zhang J, Strikwerda A, Fan K et al. Optically Modulated Multiband Terahertz Perfect Absorber. Advanced Optical Materials. 2014;2(12):1221–1226. https://doi.org/10.1002/adom.201400197