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Kurnikov MA, Novokovskaya AL, Efimenko ES, Bakunov MI. Long propagating velocity-controlled Einstein's mirror for terahertz light conversion. OPTICS EXPRESS 2020; 28:33084-33093. [PMID: 33114978 DOI: 10.1364/oe.405032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 09/26/2020] [Indexed: 06/11/2023]
Abstract
We show that Einstein's relativistic mirror with long (hundreds of µm) propagation distance and controllable propagation velocity can be implemented in the form of a dense free carrier front generated by multiphoton absorption of tilted-pulse-front femtosecond laser pulses in a dielectric or semiconductor medium. The velocity control is achieved by varying the pulse front tilt angle. Simulations demonstrate that such fronts can serve as efficient Doppler-type converters of terahertz pulses. In particular, the pulse reflected from a front, generated by three-photon absorption of a Ti:sapphire laser in ZnS, can exhibit strong (up to more than an order of magnitude) pulse compression and spectrum broadening without a noticeable amplitude change. The proposed technique may be used to convert strong low-frequency terahertz pulses, generated by optical rectification of tilted-pulse-front laser pulses, to desirable temporal and spectral characteristics for a variety of applications.
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Zhang Y, Wu Y, Wang X, Fossum ER, Kumar R, Liu J, Salamo G, Yu SQ. Non-avalanche single photon detection without carrier transit-time delay through quantum capacitive coupling. OPTICS EXPRESS 2017; 25:26508-26518. [PMID: 29092140 DOI: 10.1364/oe.25.026508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
Searching for innovative approaches to detect single photons remains at the center of science and technology for decades. This paper proposes a zero transit-time, non-avalanche quantum capacitive photodetector to register single photons. In this detector, the absorption of a single photon changes the wave function of a single electron trapped in a quantum dot (QD), leading to a charge density redistribution nearby. This redistribution translates into a voltage signal through capacitive coupling between the QD and the measurement probe. Using InAs QD/AlAs barrier as a model system, the simulation shows that the output signal reaches ~4 mV per absorbed photon, promising for high-sensitivity, ps single-photon detection.
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Zhao B, Abdi-Jalebi M, Tabachnyk M, Glass H, Kamboj VS, Nie W, Pearson AJ, Puttisong Y, Gödel KC, Beere HE, Ritchie DA, Mohite AD, Dutton SE, Friend RH, Sadhanala A. High Open-Circuit Voltages in Tin-Rich Low-Bandgap Perovskite-Based Planar Heterojunction Photovoltaics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28066989 DOI: 10.1002/adma.201604744] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 09/24/2016] [Indexed: 05/06/2023]
Abstract
Low-bandgap CH3 NH3 (Pbx Sn1-x )I3 (0 ≤ x ≤ 1) hybrid perovskites (e.g., ≈1.5-1.1 eV) demonstrating high surface coverage and superior optoelectronic properties are fabricated. State-of-the-art photovoltaic (PV) performance is reported with power conversion efficiencies approaching 10% in planar heterojunction architecture with small (<450 meV) energy loss compared to the bandgap and high (>100 cm2 V-1 s-1 ) intrinsic carrier mobilities.
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Affiliation(s)
- Baodan Zhao
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Mojtaba Abdi-Jalebi
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Maxim Tabachnyk
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Hugh Glass
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Varun S Kamboj
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Wanyi Nie
- Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Andrew J Pearson
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Yuttapoom Puttisong
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Karl C Gödel
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Harvey E Beere
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - David A Ritchie
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | | | - Siân E Dutton
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Richard H Friend
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Aditya Sadhanala
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
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Wismer MS, Kruchinin SY, Ciappina M, Stockman MI, Yakovlev VS. Strong-Field Resonant Dynamics in Semiconductors. PHYSICAL REVIEW LETTERS 2016; 116:197401. [PMID: 27232043 DOI: 10.1103/physrevlett.116.197401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Indexed: 06/05/2023]
Abstract
We predict that a direct band gap semiconductor (GaAs) resonantly excited by a strong ultrashort laser pulse exhibits a novel regime: kicked anharmonic Rabi oscillations. In this regime, Rabi oscillations are strongly coupled to intraband motion, and interband transitions mainly take place when electrons pass near the Brillouin zone center where electron populations undergo very rapid changes. The asymmetry of the residual population distribution induces an electric current controlled by the carrier-envelope phase of the driving pulse. The predicted effects are experimentally observable using photoemission and terahertz spectroscopies.
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Affiliation(s)
- Michael S Wismer
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
| | | | - Marcelo Ciappina
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
| | - Mark I Stockman
- Center for Nano-Optics (CeNO) and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30340, USA
| | - Vladislav S Yakovlev
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany
- Center for Nano-Optics (CeNO) and Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30340, USA
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Radin MD, Rodriguez JF, Tian F, Siegel DJ. Lithium Peroxide Surfaces Are Metallic, While Lithium Oxide Surfaces Are Not. J Am Chem Soc 2011; 134:1093-103. [DOI: 10.1021/ja208944x] [Citation(s) in RCA: 298] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maxwell D. Radin
- Department
of Physics, ‡Mechanical Engineering Department, §Applied Physics Program, and ∥Michigan Energy Institute, University of Michigan, Ann Arbor, Michigan
48109-2125, United States
| | - Jill F. Rodriguez
- Department
of Physics, ‡Mechanical Engineering Department, §Applied Physics Program, and ∥Michigan Energy Institute, University of Michigan, Ann Arbor, Michigan
48109-2125, United States
| | - Feng Tian
- Department
of Physics, ‡Mechanical Engineering Department, §Applied Physics Program, and ∥Michigan Energy Institute, University of Michigan, Ann Arbor, Michigan
48109-2125, United States
| | - Donald J. Siegel
- Department
of Physics, ‡Mechanical Engineering Department, §Applied Physics Program, and ∥Michigan Energy Institute, University of Michigan, Ann Arbor, Michigan
48109-2125, United States
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