Related Experiment Video
Updated: Jun 17, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Summary
This study presents two narrow band filters. One utilizes Zeeman splitting for absorption, while the other employs the Macaluso Corbino effect for dispersion splitting, offering narrower profiles and wider fields than Lyot-Ohman filters.
Area of Science:
- Optics and Photonics
- Spectroscopy
Background:
- Narrow band filters are crucial for spectral isolation.
- Existing filters like Lyot-Ohman have limitations in transmission profile width and field of view.
Purpose of the Study:
- To develop theoretical models for two novel narrow band filter types.
- To compare their performance against existing technologies like the Lyot-Ohman filter.
Main Methods:
- Theoretical development based on Zeeman splitting of absorption coefficients.
- Theoretical development utilizing the Macaluso Corbino effect on anomalous dispersion curves within a Zeeman multiplet.
Main Results:
- The Zeeman splitting filter leverages line absorption coefficient changes.
- The Macaluso Corbino effect filter demonstrates significantly narrower transmission profiles.
- The Macaluso Corbino effect filter offers a very wide field of view.
Conclusions:
- The Macaluso Corbino effect offers a viable alternative to crystal birefringence for narrow band filtering.
- These novel filters provide enhanced performance in terms of spectral resolution and field of view.
Related Concept Videos
01:14NMR Spectrometers: Resolution and Error Correction
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
01:17Bandpass Sampling
In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...