Coherent electro-optical detection of terahertz radiation from an optical parametric oscillator

Meng, Fanqi; Thomson, Mark D.; Molter, Daniel; Löffler, Thomas; Jonuscheit, Joachim; Beigang, R.; Bartschke, J.; Bauer, Tobias; Nittmann, M.; Roskos, Hartmut G.

doi:10.1364/oe.18.011316

Cited by 13 publications

(5 citation statements)

References 28 publications

(39 reference statements)

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“…The terahertz time domain spectroscopy (THz-TDS) system is based on photoconductive detection and electro-optical detection, which works through detection of a terahertz light-induced change in the refractive index of the electro-optical materials. The THz power detected in the THz-TDS is about 1 µW, limiting application in real sample spectroscopy and imaging [16,17]. Moreover, data can only be acquired one pixel at a time, which limits the data acquisition rate and largely slows the imaging time.…”

Section: Introductionmentioning

confidence: 99%

Ge-Core/a-Si-Shell Nanowire-Based Field-Effect Transistor for Sensitive Terahertz Detection

2018

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Although terahertz technology has demonstrated strong potential for various applications, detectors operating in the terahertz region are yet to be fully established. Numerous designs have been proposed for sensitive terahertz detection, with a nanowire-based field-effect transistor (FET) being one of the most promising candidates. In this study, we use a Ge-core/a-Si-shell nanowire coupled to a bow-tie antenna to fabricate a FET structure for terahertz detection. We achieved high responsivity and low noise equivalent power (NEP) upon irradiation at 1.63 THz. The proposed sensitive terahertz detector will further promote the development of terahertz technology in fields such as spectroscopic analysis and imaging.

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Section: Introductionmentioning

confidence: 99%

Ge-Core/a-Si-Shell Nanowire-Based Field-Effect Transistor for Sensitive Terahertz Detection

2018

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“…This birefringence causes a change in polarization of the 100 fs, 800 nm pulses that results, after polarization analysis optics, in a change in detected intensity Δ I . For a sufficiently thin crystal and sufficiently short probe pulse Δ I is given by , with r the EO coefficient, L the crystal thickness, n IR the refractive index of the material at the near-infrared probing wavelength λ IR , and E THz ( t ) the THz field generated by OH1. DPFO shows a 4× larger response than GaP at 1.5 THz.…”

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confidence: 99%

THz Generation and Detection by Fluorenone Based Organic Crystals

Savoini

Huber

Cuppen³

et al. 2018

ACS Photonics

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Article 25fa pilot End User Agreement This publication is distributed under the terms of Article 25fa of the Dutch Copyright Act (Auteurswet) with explicit consent by the author. Dutch law entitles the maker of a short scientific work funded either wholly or partially by Dutch public funds to make that work publicly available for no consideration following a reasonable period of time after the work was first published, provided that clear reference is made to the source of the first publication of the work. This publication is distributed under The Association of Universities in the Netherlands (VSNU) 'Article 25fa implementation' pilot project. In this pilot research outputs of researchers employed by Dutch Universities that comply with the legal requirements of Article 25fa of the Dutch Copyright Act are distributed online and free of cost or other barriers in institutional repositories. Research outputs are distributed six months after their first online publication in the original published version and with proper attribution to the source of the original publication. You are permitted to download and use the publication for personal purposes. All rights remain with the author(s) and/or copyrights owner(s) of this work. Any use of the publication other than authorised under this licence or copyright law is prohibited. If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons.

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“…In electronics, high-electron-mobility transistors (HEMTs) 5) and resonant-tunneling diodes (RTDs) 6) have been developed to have fundamental oscillation reaching sub-THz and higher frequencies. In photonics, nonlinear optical wavelength conversion [7][8][9][10][11][12][13][14][15][16][17] and the quantum cascade structure in semiconductor lasers have been explored in the midinfrared region down to the frequencies of around 1 THz. 18) Among these sources, there is no tunable source operating in the sub-THz frequency range with high output power.…”

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confidence: 99%

Tunable terahertz waves from 4-dimethylamino-N′-methyl-4′-stibazolium tosylate pumped with dual-wavelength injection-seeded optical parametric generation

Tao

Nawata

Han

et al. 2017

Appl. Phys. Express

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We developed a widely tunable terahertz (THz)-wave source covering the sub-THz frequency by difference frequency generation using a 4-dimethylamino-N′-methyl-4′-stibazolium tosylate (DAST) crystal. Near-infrared waves generated by dual-wavelength injection-seeded β-BaB2O4 optical parametric generation (is-BBO-OPG) were used for pumping the DAST crystal, which had separated wavelengths in the spectrum with a difference frequency of sub-THz. Furthermore, the non-collinear phase-matching condition was designed to compensate the walk-off effect of the BBO crystal. Consequently, tunable THz-waves from 0.3 to 4 THz were generated by tuning the wavelength of one of the seeding beams. The generated sub-THz-waves were monochromatic (dν < 33 GHz) with a maximum energy of 80 pJ at 0.65 THz.

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Coherent electro-optical detection of terahertz radiation from an optical parametric oscillator

Cited by 13 publications

References 28 publications

Ge-Core/a-Si-Shell Nanowire-Based Field-Effect Transistor for Sensitive Terahertz Detection

Ge-Core/a-Si-Shell Nanowire-Based Field-Effect Transistor for Sensitive Terahertz Detection

THz Generation and Detection by Fluorenone Based Organic Crystals

Tunable terahertz waves from 4-dimethylamino-N′-methyl-4′-stibazolium tosylate pumped with dual-wavelength injection-seeded optical parametric generation

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