Related Experiment Video
Updated: Feb 23, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
7.8K
Advances in multi-dimensional coherent spectroscopy of semiconductor nanostructures
Galan Moody1, Steven T Cundiff2
1Applied Physics Division, National Institute of Standards & Technology, Boulder, CO, USA.
Advances in Physics: X
|September 13, 2017
Summary
Multi-dimensional coherent spectroscopy (MDCS) reveals dynamics in materials. This technique precisely measures semiconductor nanostructures, advancing understanding of optical decoherence and many-body interactions.
Area of Science:
- Condensed matter physics
- Quantum optics
- Materials science
Background:
- Multi-dimensional coherent spectroscopy (MDCS) is a powerful technique for studying material properties.
- It excels at resolving dynamics of optically excited states in disordered systems.
- MDCS is crucial for understanding semiconductors, revealing linewidth contributions and interactions.
Purpose of the Study:
- To review the implementation of MDCS for nonlinear optical response measurements.
- To highlight MDCS applications in semiconductor nanostructures.
- To showcase advancements in understanding optical decoherence, energy transfer, and many-body phenomena.
Main Methods:
- Implementation of multi-dimensional coherent spectroscopy (MDCS).
- Measurement of nonlinear optical response of excitonic transitions.
- Application to diverse semiconductor nanostructures including quantum dots, wells, and microcavities.
Main Results:
- MDCS enables unambiguous separation of homogeneous and inhomogeneous optical linewidth contributions.
- The technique identifies coupling between resonances and signatures of many-body interactions.
- Recent studies demonstrate MDCS's capability in advancing the understanding of complex phenomena.
Conclusions:
- MDCS is a versatile and sensitive technique for probing material dynamics.
- Its application to semiconductor nanostructures provides deep insights into optical and electronic processes.
- MDCS is essential for future research in quantum materials and devices.
Related Concept Videos
01:16UV–Vis Spectroscopy: Molecular Electronic Transitions
3.1K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
3.1K
01:14Molecular Spectroscopy: Absorption and Emission
4.8K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
4.8K
01:26Raman Spectroscopy Instrumentation: Overview
1.4K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.4K
01:32UV–Vis Spectroscopy of Conjugated Systems
8.6K
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent of conjugation in...
One of the factors influencing λmax is the extent of conjugation in...
8.6K
01:20Raman Spectroscopy: Overview
1.9K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.9K
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
3.0K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
3.0K