Dependence of emission of terahertz radiation on geometrical parameters of dipole photoconductive antennas

Miyamaru, Fumiaki; Saito, Yu; Yamamoto, Kohji; Furuya, Takashi; Nishizawa, Seizi; Tani, Masahiko

doi:10.1063/1.3436724

Cited by 54 publications

(37 citation statements)

References 20 publications

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“…1 is rather efficient and straightforward to fabricate using standard UV lithography. It should be noted that also the shape and length of the antenna has an impact on the emitted THz pulse and its spectrum [69][70][71].…”

Section: Photoconductive Broadband Thz Generation and Detectionmentioning

confidence: 99%

Terahertz spectroscopy and imaging – Modern techniques and applications

Jepsen

Cooke

Koch

2010

Laser & Photonics Reviews

1,700

977

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Over the past three decades a new spectroscopic technique with unique possibilities has emerged. Based on coherent and time-resolved detection of the electric field of ultrashort radiation bursts in the far-infrared, this technique has become known as terahertz time-domain spectroscopy (THz-TDS). In this review article the authors describe the technique in its various implementations for static and time-resolved spectroscopy, and illustrate the performance of the technique with recent examples from solid-state physics and physical chemistry as well as aqueous chemistry. Examples from other fields of research, where THz spectroscopic techniques have proven to be useful research tools, and the potential for industrial applications of THz spectroscopic and imaging techniques are discussed.

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Section: Photoconductive Broadband Thz Generation and Detectionmentioning

confidence: 99%

Terahertz spectroscopy and imaging – Modern techniques and applications

Jepsen

Cooke

Koch

2010

Laser & Photonics Reviews

1,700

977

View full text Add to dashboard Cite

show abstract

“…Various antenna designs, such as bow-tie [12], logarithm spiral [13], strip line [14], strip line dipole [15,16], and fractal-based antennas [17,18], have received significant attention for better generation and detection of THz radiation [19]. One of the most popular designs is the one that involves the use of a stripline dipole antenna, in which a center dipole is connected to coplanar striplines and forms an H-shaped electrode structure.…”

Section: Introductionmentioning

confidence: 99%

Effects of Antenna Design Parameters on the Characteristics of a Terahertz Coplanar Stripline Dipole Antenna

Nguyen¹

2013

PIER M

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Abstract-This paper presents the antenna design parameter dependency on the impedance and radiation characteristics of a terahertz coplanar stripline dipole antenna. The antenna response is numerically investigated by applying a semi-infinite substrate and by generating a constant voltage source to drive a signal on the antenna. In this way, we can analyze the antenna characteristics without the photoconductive material response and the substrate lens geometrical effects. Further, we explain the mechanism underlying the preferable uses of several millimeter length DC bias striplines in a typical THz coplanar stripline dipole antenna design. The antenna, consisting of a center dipole connected to long bias striplines, has a traveling wave characteristic supporting an attenuated current, rather than a resonant characteristic supporting a standing wave of current. The traveling wave behavior produces stable antenna input impedances and minimal changes in the antenna radiation patterns. We also found that the length of the center dipole has a prominent effect on the antenna gain response.

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“…For the increasing width would decrease the emission efficiency of the dipole antenna [11], we study the radiation power correspond to the different R values. In our simulation, the model is the same as before.…”

Section: Emission Efficiencymentioning

confidence: 99%

“…Therefore, it is necessary to enhance the THz radiation power from the photoconductive antenna by optimization design [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Terahertz Radiation From Dipole Photoconductive Antenna by Blending Tips

Diao¹,

Yang²,

Li³

et al. 2011

PIER Letters

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Abstract-We study the rectangular tips of the dipole photoconductive antenna, which has been widely used for terahertz radiation and detection, with different blend radii effect on the emission performance of terahertz (THz) radiation. For the amplitude of THz radiation pulse is proportional to the local electric field in the gap, the increased maximum bias electric field by blending tips is able to achieve higher THz radiation power. Both considering the influence to the maximum bias electric field and the emission efficiency, the blend radius of the rectangular tips is suggest to be larger than 5 µm and the radiation power is largely enhanced. Comparing to the previous work, our method has better THz radiation performance.

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Dependence of emission of terahertz radiation on geometrical parameters of dipole photoconductive antennas

Cited by 54 publications

References 20 publications

Terahertz spectroscopy and imaging – Modern techniques and applications

Terahertz spectroscopy and imaging – Modern techniques and applications

Effects of Antenna Design Parameters on the Characteristics of a Terahertz Coplanar Stripline Dipole Antenna

Enhancing Terahertz Radiation From Dipole Photoconductive Antenna by Blending Tips

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