Terahertz Photonics: Optoelectronic Techniques for Generation and Detection of Terahertz Waves

Saeedkia, Daryoosh; Safavi‐Naeini, Safieddin

doi:10.1109/jlt.2008.927614

Cited by 83 publications

(30 citation statements)

References 173 publications

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“…The popular approaches include optical THz generation, solid-state electronics and quantum cascade laser, which are limited either by low frequency conversion efficiency, low temperature requirement, or the lack of eigen oscillator [7]. Among these techniques, laser air photonics is capable of generating THz field strength greater than 1 MV/cm with bandwidth of over 100 THz through plasma formation by laser ionized gaseous medium [8].…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields

et al. 2015

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We study the generation of terahertz radiation from atoms and molecules driven by an ultrashort fundamental laser and its second harmonic field by solving time-dependent Schrödinger equation (TDSE). The comparisons between one-, two-, and three-dimensional TDSE numerical simulations show that initial ionized wave-packet and its subsequent acceleration in the laser field and rescattering with long-range Coulomb potential play key roles. We also present the dependence of the optimum phase delay and yield of terahertz radiation on the laser intensity, wavelength, duration, and the ratio of two-color laser components. Terahertz wave generation from model hydrogen molecules are further investigated by comparing with high harmonic emission. It is found that the terahertz yield is following the alignment dependence of ionization rate, while the optimal two-color phase delays varies by a small amount when the alignment angle changes from 0 to 90 degrees, which reflects alignment dependence of attosecond electron dynamics. Finally we show that terahertz emission might be used to clarify the origin of interference in high harmonic generation from aligned molecules by coincidently measuring the angle-resolved THz yields.

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Section: Introductionmentioning

confidence: 99%

Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields

et al. 2015

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“…There is presently great interest in the development of THz sources capable of generating high output powers while keeping the fabrication costs, device sizes and power consumptions to a minimum [1,2,3,4]. Gunn diodes can generate continuous wave signal with low phase noise in the GHz range, with output powers up to 100 mW [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Impact Ionization in GaAs-Based Planar Gunn Diodes by Anode Contact Design

Montes

Dunn

Stephen

et al. 2012

IEEE Trans. Electron Devices

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“…In contrast, the GHz range still needs further progress towards efficient continuous-wave (CW), compact tunable powerful sources and predictive simulation tools to design new devices. At present, the main types of CW GHz and THz sources [5]are: electron-beam sources, such as gyrotrons, free electron lasers (FELs), and backward wave oscillators (BWOs); optically pumped far-infrared gas lasers; solid-state sources; frequency multipliers; THz quantum cascade lasers (QCLs); parametric sources; and photomixers. The key compact solid-state sources that can be designed as oscillators [6] to deliver input radiation above 300 GHz for mixers and multipliers are Schottky diodes, heterojunction barrier varactors, heterojunction bipolar transistors, high-electron-mobility transistors, resonant tunneling diodes, tunnel-injection transit-time devices, Gunn devices, and superlattice electron devices (SLEDs) [7], which are particularly high-performance fundamental sources in the 60-220 GHz range [8].…”

Section: Introductionmentioning

confidence: 99%

Theory and measurements of harmonic generation in semiconductor superlattices with applications in the 100 GHz to 1 THz range

Pereira

Zubelli

Winge³

et al. 2017

Phys. Rev. B

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This manuscript describes harmonic generation in semiconductor superlattices, starting from a nonequilibrium Green's functions input to relaxation rate-type analytical approximations for the Boltzmann equation in which imperfections in the structure lead to asymmetric current flow and scattering processes under forward and reverse bias. The resulting current-voltage curves and the predicted consequences on harmonic generation, notably the development of even harmonics, are in good agreement with experiments. Significant output for frequencies close to 1 THz (7th harmonic) at room temperature, after excitation by a 141-GHz input signal, demonstrate the potential of superlattice devices for gigahertz to terahertz applications.

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Terahertz Photonics: Optoelectronic Techniques for Generation and Detection of Terahertz Waves

Cited by 83 publications

References 173 publications

Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields

Theoretical study of terahertz generation from atoms and aligned molecules driven by two-color laser fields

Reduction of Impact Ionization in GaAs-Based Planar Gunn Diodes by Anode Contact Design

Theory and measurements of harmonic generation in semiconductor superlattices with applications in the 100 GHz to 1 THz range

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