Related Experiment Video
Updated: Feb 3, 2026
07:22
Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
8.3K
Counter-propagating modes in a Fabry-Perot-type resonator
Optics Letters
|October 16, 2018
Summary
This study investigates longitudinal optical modes in Fabry-Perot resonators. Counter-propagating waves at the same resonance frequency are identified as independent optical modes.
Area of Science:
- Optics
- Quantum Optics
- Resonator Physics
Background:
- Fabry-Perot resonators are fundamental optical cavities.
- Understanding optical modes is crucial for laser and sensor development.
- Previous studies have explored various aspects of resonator modes.
Purpose of the Study:
- To investigate the longitudinal optical modes within a Fabry-Perot resonator.
- To analyze spectral mode density and mode profiles.
- To compare resonator configurations like lensguides and ring resonators.
Main Methods:
- Analysis of three- and one-dimensional spectral mode density in free space and resonators.
- Summation of mode profiles to derive the Airy distribution.
- Comparative analysis of two-mirror, infinite periodic lensguide, and ring resonators.
Main Results:
- The spectral mode density in free space and standing-wave resonators was calculated.
- The Airy distribution was obtained from the infinite sum of mode profiles.
- Independent optical modes were identified as counter-propagating waves at the same resonance frequency and polarization.
Conclusions:
- Two counter-propagating waves at the same resonance frequency and polarization constitute independent optical modes.
- This finding clarifies the nature of optical modes in Fabry-Perot resonators.
- The study provides a foundation for understanding complex optical resonator systems.
Related Concept Videos
02:52Resonance
65.4K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
65.4K
01:07What is a Mode?
26.0K
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
26.0K
01:14Ventilatory Modes
1.5K
Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
1.5K
01:07Propagation of Waves
3.0K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
3.0K
01:23Propagation of Action Potentials
9.4K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
9.4K
01:03Modes of Standing Waves - I
4.0K
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...
4.0K