Parametric oscillation and amplification with gate controlled capacitor-within-capacitor

H. Grebel

doi:10.1007/s42452-021-04665-7

Parametric oscillation and amplification with gate controlled capacitor-within-capacitor

SN Applied Sciences ◽

10.1007/s42452-021-04665-7 ◽

2021 ◽

Vol 3 (6) ◽

Author(s):

H. Grebel

Keyword(s):

Parametric Oscillation ◽

Parametric Amplifiers ◽

Capacitance Change ◽

Parametric Oscillators ◽

Electronic Element ◽

Parametric Oscillations ◽

Nano Graphene ◽

New Applications

AbstractParametric oscillators and parametric amplifiers are known for their ‘quiet’ operation and find new applications in quantum circuitry. A Capacitor-within-Capacitor (CWC) is a nested electronic element that has two components: the cell (e.g., the outer capacitor) and the gate (e.g., the inner capacitor). Here we provide analysis and experiments on diode-interfaced, CWC that exhibit parametric oscillations and parametric amplifications. By replacing the diode with a doped nano-graphene junction, we demonstrated a new structure whose doping may be electronically and chemically controlled. Advantages of these elements are in their simplicity, large relative capacitance change (of the order of 50%), separation of pump and signal channels and possibility for large integration.

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Two-photon resonant optical processes in atomic potassium

Canadian Journal of Physics ◽

10.1139/p84-163 ◽

1984 ◽

Vol 62 (12) ◽

pp. 1187-1197 ◽

Cited By ~ 8

Author(s):

P.-L. Zhang ◽

A. L. Schawlow

Keyword(s):

Four Wave Mixing ◽

Phase Match ◽

Parametric Oscillation ◽

Wave Mixing ◽

Atomic Polarization ◽

Phase Match Condition ◽

Mixing Processes ◽

Atomic Transitions ◽

Two Photon ◽

Parametric Oscillations

Two-photon resonant optical processes, using potassium ns2S1/2 states (7 ≤ n ≤ 20), are investigated in detail by a pulsed dye laser. About 100 coherent lines between 288–422 nm are generated through the processes ωUV ± ωIR = 2ωL and [Formula: see text]. The strongest lines (near mP–4S transitions) are formed by parametric oscillation and are generally split into components that are frequency shifted relative to atomic transitions. About 70 lines are generated by six-wave mixing processes and 15 other lines by four-wave mixing processes. The wavelengths, relative intensities of the lines, and the components of the strongest lines are explained with a theoretical analysis based on the wave equation, atomic polarization, and phase-match condition for both wave-mixing processes and parametric oscillations.

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Combined-Mode Parametric Oscillations in Mechanical Systems

Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems ◽

10.1115/detc1995-0246 ◽

1995 ◽

Author(s):

Chikara Sato

Keyword(s):

Differential Equations ◽

Parametric Excitation ◽

Nonlinear Differential Equations ◽

Parametric Instability ◽

Excitation Frequency ◽

Energy Condition ◽

Higher Order ◽

Parametric Oscillation ◽

Mathematical Form ◽

Parametric Oscillations

Abstract Parametric oscillations formulated by linear or nonlinear differential equations of order two are often encountered in the textbooks on the theory of nonlinear oscillations. Mathieu equation or its modified nonlinear version are seen in many papers as the typical examples. Parametric oscillations of the higher order than two, however, are less investigated, and the fundamental form is little known, especially the knowledge on the engineering viewpoint is little published in relation with mechanical or physical models. This paper deals with the parametirc oscillations governed by periodic differential equations with the higher order than two, presenting the fundamental mathematical form with many physical, mechanical, and electrical examples. General nonlinear systems with parametric excitation are not easy to treat with, because they have many characters depending on the specific forms of the systems. In this paper we confine systems which have three conditions, first excitation frequency region is limited, second symmetry condition or reciprocity is kept, third no energy condition of nonlinear functions. These conditions are partly mathematical and partly physical. In order to treat with parametric oscillation we think that the causes of oscillations are only parametric instability. Without parametric excitation no significant oscillations are assumed to exist.

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Numerical analysis for single-frequency nanosecond optical parametric oscillators and optical parametric amplifiers

Optik ◽

10.1016/j.ijleo.2015.03.010 ◽

2015 ◽

Vol 126 (11-12) ◽

pp. 1128-1132 ◽

Cited By ~ 2

Author(s):

Xiang Zhang ◽

Chunhua Wang ◽

Zhibin Ye ◽

Yunxuan Qi ◽

Chong Liu ◽

...

Keyword(s):

Numerical Analysis ◽

Single Frequency ◽

Optical Parametric Oscillators ◽

Parametric Amplifiers ◽

Parametric Oscillators ◽

Optical Parametric ◽

Optical Parametric Amplifiers

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1250-kilovolt scanning transmission electron microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100113007 ◽

1984 ◽

Vol 42 ◽

pp. 624-625

Author(s):

T. Imura ◽

S. Maruse ◽

K. Mihama ◽

M. Iseki ◽

M. Hibino ◽

...

Keyword(s):

High Voltage ◽

Electron Probe ◽

Scanning Transmission Electron Microscope ◽

Pressure Vessels ◽

Practical Applications ◽

Voltage Generator ◽

Transmission Electron ◽

Scanning Transmission ◽

New Applications ◽

High Voltage Generator

Ultra high voltage STEM has many inherent technical advantages over CTEM. These advantages include better signal detectability and signal processing capability. It is hoped that it will explore some new applications which were previously not possible. Conventional STEM (including CTEM with STEM attachment), however, has been unable to provide these inherent advantages due to insufficient performance and engineering problems. Recently we have developed a new 1250 kV STEM and completed installation at Nagoya University in Japan. It has been designed to break through conventional engineering limitations and bring about theoretical advantage in practical applications.In the design of this instrument, we exercised maximum care in providing a stable electron probe. A high voltage generator and an accelerator are housed in two separate pressure vessels and they are connected with a high voltage resistor cable.(Fig. 1) This design minimized induction generated from the high voltage generator, which is a high frequency Cockcroft-Walton type, being transmitted to the electron probe.

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