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Terahertz transmission enhancement i...

Whisenhunt, Brady Andrew.

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Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer./
作者:	Whisenhunt, Brady Andrew.
面頁冊數:	99 p.
附註:	Source: Masters Abstracts International, Volume: 51-05.
Contained By:	Masters Abstracts International51-05(E).
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1534772
ISBN:	9781267958754

Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer.
Whisenhunt, Brady Andrew.

Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer. - 99 p.

Source: Masters Abstracts International, Volume: 51-05.

Thesis (M.S.)--Oklahoma State University, 2013.

Scope and Method of Study: This thesis investigates terahertz transmission through finite-size arrays of subwavelength holes perforated in a thin aluminum film modified with a periodic layer of dielectric pegs resting on the hole openings. Samples of differing patterns and numbers of holes were fabricated in a 350 nm thick layer of aluminum on top of a 640 µm thick silicon substrate layer. The dielectric peg layer (DPL) consisted of periodically-spaced pegs made out of negative photoresist material. Terahertz time-domain spectroscopy measurements of the transmission was taken both before and after fabrication of the DPL on top of the hole array samples. The results were analyzed and compared to simulation of an infinitely periodic hole array modified with a DPL.

ISBN: 9781267958754Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer.
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245 1 0 $a Terahertz transmission enhancement in finite-size arrays of subwavelength holes modified with dielectric peg layer.
300 $a 99 p.
500 $a Source: Masters Abstracts International, Volume: 51-05.
500 $a Adviser: Weili Zhang.
502 $a Thesis (M.S.)--Oklahoma State University, 2013.
520 $a Scope and Method of Study: This thesis investigates terahertz transmission through finite-size arrays of subwavelength holes perforated in a thin aluminum film modified with a periodic layer of dielectric pegs resting on the hole openings. Samples of differing patterns and numbers of holes were fabricated in a 350 nm thick layer of aluminum on top of a 640 µm thick silicon substrate layer. The dielectric peg layer (DPL) consisted of periodically-spaced pegs made out of negative photoresist material. Terahertz time-domain spectroscopy measurements of the transmission was taken both before and after fabrication of the DPL on top of the hole array samples. The results were analyzed and compared to simulation of an infinitely periodic hole array modified with a DPL.
520 $a Findings and Conclusions: A peak in the transmission spectrum was observed at the predicted surface plasmon resonance frequency for the array. The transmission peak was enhanced 5%-20% with addition of the DPL, depending on the arrangement and number of holes in the sample. A weaker peak was observed in some samples at higher frequencies with addition of the DPL, which is attributed to a resonance of the DPL layer itself. Both resonant and nonresonant transmission was enhanced with addition of the DPL. Simulation showed a similar enhancement of the resonant and nonresonant transmission due to DPL. Varying the value of the dielectric constant of the simulated pegs changed the strength of the fundamental surface plasmon resonance as well as the location of the higher frequency peaks. A distinct Fano-like asymmetry was observed in the experimentally measured transmission spectra but not observed in simulation. The results suggest that a heterostructure consisting of a finite-size array of subwavelength holes combined with a DPL can be used to enhance the transmission of light through the holes as well as tune the asymmetry of the main surface plasmon resonance peak.
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790 1 0 $a Bunting, Charles $e committee member
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792 $a 2013
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