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Parallel Resonance

Parallel Resonance

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:

Double Resonance Techniques: Overview

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...

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Related Experiment Video

Updated: Jun 2, 2026

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Microresonator-based optical frequency combs.

T J Kippenberg¹, R Holzwarth, S A Diddams

¹Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, CH-1015, Switzerland. tobias.kippenberg@epfl.ch

Science (New York, N.Y.)

|April 30, 2011

Summary

This summary is machine-generated.

A new method generates optical frequency combs using microresonators, enabling high repetition rates for advanced applications. This chip-scale technology enhances precision spectroscopy, atomic clocks, and telecommunications.

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Last Updated: Jun 2, 2026

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

Optics and Photonics
Quantum Science

Background:

Optical frequency combs (OFCs) feature precisely spaced spectral lines, driving advancements in precision measurements.
Existing OFC applications span spectroscopy, atomic clocks, ultracold gases, and molecular fingerprinting.

Purpose of the Study:

To review the emerging principle of OFC generation via parametric frequency conversion in microresonators.
To discuss the opportunities presented by this technology for novel applications and fundamental science.

Main Methods:

Parametric frequency conversion within high-resonance quality factor (Q) microresonators is utilized for OFC generation.
This method allows for compact, chip-scale integration.

Main Results:

The microresonator approach enables high repetition rates for OFCs, ranging from 10 to 1000 gigahertz.
This facilitates increased accessibility and broader application of OFC technologies.

Conclusions:

Microresonator-based OFC generation represents a significant advancement in optical frequency comb technology.
This technology opens new avenues for applications in astronomy, microwave photonics, telecommunications, and fundamental scientific research.