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Related Concept Videos

Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

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Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
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Standing Waves in a Cavity01:28

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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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Modes of Standing Waves: II01:04

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The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
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Parallel Resonance01:23

Parallel Resonance

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The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
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Modes of Standing Waves - I01:03

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A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
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Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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High quality factor confined Tamm modes.

C Symonds1, S Azzini2, G Lheureux2

  • 1Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Lyon, France. clementine.symonds@univ-lyon1.fr.

Scientific Reports
|June 22, 2017
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Summary
This summary is machine-generated.

High-quality Tamm-like hybrid structures achieve quality factors up to 5000. These novel super Tamm modes offer spatial confinement for advanced photonic applications.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Conventional Tamm plasmons exhibit high losses.
  • Bragg modes lack strong spatial confinement.
  • Hybrid metal/semiconductor structures are promising for novel optical phenomena.

Purpose of the Study:

  • To demonstrate high-quality factors in Tamm-like hybrid metal/semiconductor structures.
  • To investigate the properties of novel super Tamm modes.
  • To explore potential applications in lasing and polaritonics.

Main Methods:

  • Fabrication of a Bragg mirror covered by a transparent layer and a metallic film.
  • Characterization of optical modes within the hybrid structure.
  • Experimental demonstration of spatial confinement on a micrometric scale.

Main Results:

  • Achieved quality factors up to 5000 in Tamm-like hybrid structures.
  • Observed an intermediate behavior between Tamm plasmon and Bragg modes.
  • Demonstrated spatial confinement of super Tamm modes within the metal layer.

Conclusions:

  • The developed hybrid structures enable high-Q modes with reduced losses.
  • Super Tamm modes offer unique spatial confinement properties.
  • Metal structuration provides versatile control for photonic device applications.