Optical and photocurrent spectroscopy with picosecond strain pulses

Akimov, A. V.; Scherbakov, A. V.; Yakovlev, D. R.; Bayer, М.; Kent, A. J.

doi:10.1016/j.jlumin.2010.09.007

Cited by 9 publications

(4 citation statements)

References 20 publications

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“…Arora A. et al demonstrated theoretically that large injection currents can develop in strained, twisted bilayer graphene heterostructures with a broken sublattice symmetry [133]. Akimov et al presented an overview of optical and photocurrent spectroscopy with picosecond strain pulses [134], in which a picosecond strain pulse can be used to gate, on a picosecond timescale, the photocurrent in a p-i-n diode containing a quantum structure (including quantum well and quantum wires and quantum dots) in its intrinsic region. In addition, magnetic field can also be used to regulate photoconductivity and photocurrent.…”

Section: Conclusion and Perspectivementioning

confidence: 99%

Regulating Terahertz Photoconductivity in Two-Dimensional Materials

Xing

Zhang

2023

Photonics

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Two-dimensional materials represented by graphene have attracted extensive interest owing to the unique layer-dependent physical properties that are tunable with various external fields. In addition, by stacking two or more 2D materials together, a new material with the desired properties can be tailored and designed. Fully understanding the dynamical photoconductive response in 2D materials is uttermost important to design and develop the advanced optoelectronic devices. Terahertz (THz) time-domain spectroscopy (TDS) and time-resolved THz spectroscopy are powerful spectroscopic tools with the advantages of being contact-free and noninvasive, which have been widely used to study the photoconductivity (PC) of 2D materials. In this review, firstly, we provide a short introduction of the 2D materials and THz spectroscopy, and then a brief introduction of the experimental setup and experimental data analysis based on time-resolved THz spectroscopy are presented. After that, we overview the latest progress on the regulation of the THz PC that includes: (1) regulating the THz PC of graphene (Gr) and transition metal dichalcogenide (TMD) thin films with oxygen adsorption; (2) regulating the THz PC of Gr and Gr/TMDs heterostructures by electric gating and a built-in field introduced by a substrate; (3) regulating the THz PC of Gr/TMD heterostructures via optical gating; and (4) we overview the latest progress on the observation of elementary excitations in 2D materials with THz PC spectra following optical excitation and THz PC regulation via the photoexcitation of quasi-particles. Finally, we conclude the review and present a short overview of future research directions.

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Section: Conclusion and Perspectivementioning

confidence: 99%

Regulating Terahertz Photoconductivity in Two-Dimensional Materials

Xing

Zhang

2023

Photonics

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“…Воздействия переменной деформации на такие структуры с целью изучения изменения и управления частотным спектром излучения проводились в различных диапазонах частот перемен-ной деформации: от ультразвукового до гиперзвуково-го [5][6][7][8][9][10][11].…”

Section: Introductionunclassified

Поляризационные эффекты в гетеролазерах In-=SUB=-28-=/SUB=-Ga-=SUB=-72-=/SUB=-As/GaAs на квантовой яме

Kulakova¹,

Лютецкий²,

Tarasov³

2017

Физика Твердого Тела

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Экспериментально и теоретически изучено воздействие вводимых извне переменных деформаций на поляризационные свойства излучения лазера In28Ga72As/GaAs на квантовой яме при комнатной температуре. Проведен анализ поляризационных эффектов при различных величинах превышения рабочим током порогового. Получены данные о величине энергии расщепления уровней легких и тяжелых дырок в квантовой яме исследованной структуры. Экспериментально доказано, что эффективность воздействия переменной деформацией на поворот поляризации существенно возрастает с увеличением ширины квантовой ямы. Работа поддержана РФФИ (грант N 11-02-00729) и научными программами Президиума РАН. DOI: 10.21883/FTT.2017.09.44837.062x

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“…Acoustic studies of optical properties in quantum size heterostructures find increasingly wide applica tion due to the possibility of detecting and studying different effects of both fundamental and applied nature [1][2][3][4][5][6][7][8][9][10][11]. The effect of alternating strain on such structures with the purpose of studying changes in and controlling the frequency emission spectrum was stud ied in different frequency ranges of alternating strain from ultrasonic [1,2,[4][5][6][9][10][11] to hypersonic [3,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…The effect of alternating strain on such structures with the purpose of studying changes in and controlling the frequency emission spectrum was stud ied in different frequency ranges of alternating strain from ultrasonic [1,2,[4][5][6][9][10][11] to hypersonic [3,7,8]. We studied the mechanisms of ultrasonic strain effects on the emission spectrum of laser heterostruc tures.…”

Section: Introductionmentioning

confidence: 99%

Effects of induced birefringence in nanoscale heterostructures

Kulakova

2014

Phys. Solid State

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The influence of a complex of elastic strains caused by technological stresses and external shear strains on the optical properties of cubic crystals has been analyzed. Data on the changes in optical symmetry of such crystals have been obtained. The changes in polarization characteristics of the radiation during prop agation in both strained crystal and shear strained nanoscale heterostructures have been studied. The effects of the acoustoelectronic and photoelastic deformation mechanisms on the changes in polarization properties of the radiation of nanoscale heterostructures have been compared.

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Optical and photocurrent spectroscopy with picosecond strain pulses

Cited by 9 publications

References 20 publications

Regulating Terahertz Photoconductivity in Two-Dimensional Materials

Regulating Terahertz Photoconductivity in Two-Dimensional Materials

Поляризационные эффекты в гетеролазерах In-=SUB=-28-=/SUB=-Ga-=SUB=-72-=/SUB=-As/GaAs на квантовой яме

Effects of induced birefringence in nanoscale heterostructures

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