Detection of terahertz radiation in metamaterials: giant plasmonic ratchet effect (Conference Presentation)

2017 ◽  
Author(s):  
Sergey Rudin ◽  
Greg Rupper ◽  
Valentin Kachorovski ◽  
Michael S. Shur
Keyword(s):  
Terahertz Radiation ◽  
Ratchet Effect

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

Selective Properties of a Planar Electrodynamic System for Two-Stage Generation of Terahertz Radiation

2018 ◽  
Vol 13 (1) ◽  
pp. 13-24
Author(s):  
A. V. Arzhannikov ◽  
◽  
P. V Kalinin ◽  
E. S. Sandalov ◽  
S. L. Sinitsky ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Electrodynamic System ◽  
Two Stage

Electro-optical detection of terahertz radiation in a zinc sulphide crystal at a wavelength of 512 nm

2020 ◽  
Vol 13 (11) ◽  
pp. 112007
Author(s):  
Joel Edouard Nkeck ◽  
Xavier Ropagnol ◽  
Riad Nechache ◽  
François Blanchard
Keyword(s):  
Terahertz Radiation ◽  
Optical Detection ◽  
Zinc Sulphide

The Ratchet Effect: Theory and Empirical Evidence

2020 ◽  
Author(s):  
Matthias D. Mahlendorf ◽  
Michal Matejka ◽  
Utz Schäffer
Keyword(s):  
Empirical Evidence ◽  
Ratchet Effect ◽  
Effect Theory

Photon Counting Microscopy of Terahertz Radiation

2008 ◽  
Vol 36 (Supplement) ◽  
pp. 130-131
Author(s):  
Kenji Ikushima
Keyword(s):  
Terahertz Radiation ◽  
Photon Counting

Performance Target Revisions in Incentive Contracts: Do Information and Trust Reduce Ratcheting and the Ratchet Effect?

2015 ◽  
Vol 90 (5) ◽  
pp. 1755-1778 ◽  
Author(s):  
Jasmijn C. Bol ◽  
Jeremy B. Lill
Keyword(s):  
Structural Changes ◽  
Data Availability ◽  
Performance Information ◽  
Ratchet Effect ◽  
Past Performance ◽  
Performance Targets ◽  
Positive Performance ◽  
Confidentiality Agreement ◽  
To Receive ◽  
Performance Target

ABSTRACT In this study, we examine a setting where principals use past performance to annually revise performance targets, but do not fully incorporate the past performance information in their target revisions. We argue that this situation is driven by some principals and agents having an implicit agreement where the principal “allows” the agent to receive economic rents from positive performance-target deviations that are the result of superior effort or transitory gains by not revising targets upward, while the agent “accepts” target revisions by not restricting output when these revisions are the result of structural changes in the operation's true economic capacity. Although both the principal and the agent can benefit from an implicit agreement, we argue that for the implicit agreement to be maintainable, the principal either needs information on the cause of the performance-target deviation or there needs to be trust between the principal and the agent. Using archival data across multiple years and independent bank units, we find a pattern of ratchet attenuation and output restriction that is consistent with the existence of implicit agreements for those principal-agent dyads where information asymmetry is sufficiently reduced or mutual trust exists. Data Availability: Data used in this study cannot be made public due to a confidentiality agreement with the participating firm.

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