Tailoring single-cycle electromagnetic pulses in the 2–9 THz frequency range using DAST/SiO_2 multilayer structures pumped at Ti:sapphire wavelength

Степанов, А. Л.; Rogov, Andrii; Bonacina, Luigi; Wolf, Jean‐Pierre; Hauri, Christoph P.

doi:10.1364/oe.22.021618

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…From the point of view of the time-domain, a multi-cycle wave package is generated by the inverted domains; from the point of view of the frequency-domain, one single frequency is selected by the PM condition. Another DAST-SiO 2 multi-layer structure (slightly different from QPM) has been proposed to enhance the single-cycle THz-wave output via phase correction [80].…”

Section: Vector Phase-matchingmentioning

confidence: 99%

Phase-Matching in Nonlinear Crystal-Based Monochromatic Terahertz-Wave Generation

Liu

Niu

et al. 2022

Crystals

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Optically pumped nonlinear frequency down conversion is a proven approach for monochromatic terahertz (THz)-wave generation that provides superior properties such as continuous and wide tunability as well as laser-like linewidth and beam quality. Phase-matching (PM) is an important connection between the pump sources and nonlinear crystals and determines the direction of energy flow (as well as the output power). In past decades, a variety of peculiar PM configurations in the THz region have been invented and are different from the traditional ones in the optical region. We summarize the configurations that have been applied in nonlinear THz-wave generation, which mainly fall in two categories: scalar (collinear) PM and vector PM (including macroscopic noncollinear PM and microscopic vector PM). The development of this technique could relax the matching conditions in a wide range of nonlinear crystals and pump wavelengths and could finally promote the improvement of coherent THz sources.

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Section: Vector Phase-matchingmentioning

confidence: 99%

Phase-Matching in Nonlinear Crystal-Based Monochromatic Terahertz-Wave Generation

Liu

Niu

et al. 2022

Crystals

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“…To overcome these limitations, some artificial structures such as reflective arrays, [10][11][12] gratings, [13][14][15][16] and multilayer structures can be used to achieve terahertz polarization control. [17,18] However, these structures are difficult to achieve in terms of operating bandwidth, efficiency, and optical path design, and have a single function. The alternative to polarization regulation at terahertz frequencies is to use metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Efficient and multifunctional terahertz polarization control device based on metamaterials*

Jiao

Zhang

et al. 2020

Chinese Phys. B

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Terahertz polarization devices are an important part of terahertz optical systems. Traditional terahertz polarization devices rely on birefringent crystals, and their performances are limited by the material structures. In this work, we theoretically demonstrate that the metamaterial consisting of the medium and the periodic metal band embedded in the medium can control broadband polarization effectively. The transmission length of the subwavelength waveguide mode gives rise to a broadband transmission peak. The resonant cavity structure formed by the dielectric layer and the waveguide layer possesses a high transmission efficiency. By optimizing the metamaterial structure parameters, we design a high-efficient (>90%) quarter-wave plate over a frequency range of 0.90 THz–1.10 THz and a high-efficient (>90%) half-wave plate over a frequency range of 0.92 THz–1.02 THz. Besides, due to the anisotropy of the structure, the metamaterials with the same structural parameters can achieve the function of the polarized beam splitting with an efficiency of up to 99% over a frequency range of 0.10 THz–0.55 THz. Therefore, the designed metamaterial has a multifunctional polarization control effect, which has potential applications in the terahertz integrated polarization optical system.

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Designing a nearly perfect infrared absorber in monolayer black phosphorus

et al. 2019

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Tailoring single-cycle electromagnetic pulses in the 2–9 THz frequency range using DAST/SiO_2 multilayer structures pumped at Ti:sapphire wavelength

Cited by 3 publications

References 25 publications

Phase-Matching in Nonlinear Crystal-Based Monochromatic Terahertz-Wave Generation

Phase-Matching in Nonlinear Crystal-Based Monochromatic Terahertz-Wave Generation

Efficient and multifunctional terahertz polarization control device based on metamaterials*

Designing a nearly perfect infrared absorber in monolayer black phosphorus

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