scispace - formally typeset
Search or ask a question
Topic

Light scattering

About: Light scattering is a research topic. Over the lifetime, 37721 publications have been published within this topic receiving 861581 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, it was shown that the first two terms in the expansion of the scattering amplitude of light by a system of spin \textonehalf{} in powers of the frequency can be simply expressed in terms of the macroscopic properties of the system.
Abstract: It is shown that the first two terms in the expansion of the scattering amplitude of light by a system of spin \textonehalf{} in powers of the frequency can be simply expressed in terms of the macroscopic properties of the system. The first term is the well known Thomson amplitude, and depends only on the total charge and mass. The second term is found to depend only on the charge, mass, and magnetic moment of the system.

479 citations

Journal ArticleDOI
TL;DR: In this article, a self-formed semiconductor laser whose cavities are formed by strong optical scattering in highly disordered gain media is demonstrated, where the laser is made of zinc oxide polycrystalline films grown on amorphous fused silica substrates.
Abstract: A semiconductor laser whose cavities are “self-formed” due to strong optical scattering in highly disordered gain media is demonstrated. The lasers are made of zinc oxide polycrystalline films grown on amorphous fused silica substrates. Lasing occurs at an ultraviolet wavelength of ∼380 nm under optical pumping. Actual images of the microscopic laser cavities formed by multiple scattering have been captured. These results suggest the possibility of using disordered semiconductor microstructures as alternative sources of coherent light emission.

478 citations

Journal ArticleDOI
Sarmimala Hore, Carmen Vetter1, R. Kern1, Herman Smit, Andreas Hinsch1 
TL;DR: In this paper, an increase of 80% increase in current density was observed due to the inclusion of scattering layers in dye-sensitized solar cells (DSSCs), and an additional light scattering layer (consisting of TiO 2 -Rutile and ZrO 2 in a ratio of 1:3) was employed to study the optical properties of these scattering layers.

478 citations

Journal ArticleDOI
TL;DR: La diffusion directe de la lumiere par les modes acoustiques guides thermiquement excites d'une fibre optique constitue une source de bruit thermique.
Abstract: Forward light scattering by the thermally excited guided acoustic modes of an optical fiber produce numerous narrow lines not predicted by the usual theory of Brillouin scattering. Optical heterodyne detection has been used to resolve the scattering spectrum which begins at about 20 MHz and extends to the detection limit. A simple theory quantitatively accounts for the frequencies, polarizations, and intensities of the components. The light scattering from these modes constitutes a thermal-noise source in optical fibers that may prove significant in other experiments.

474 citations

Journal ArticleDOI
TL;DR: In this article, a hierarchy of enhancement ratios is found, with typical values of 105 for RS, 103 for RRS and 10−1 to 10 for fluorescence, depending on the quantum yield of the molecular fluorescence.
Abstract: The enhancements of normal Raman scattering, resonance Raman scattering, and fluorescence from molecules adsorbed on identical, well‐characterized, silver‐island films are reported. The enhancement arises from the electromagnetic interaction between the molecules and the electronic plasma resonance of the silver islands. A hierarchy of enhancement ratios is found, with typical values of 105 for RS, 103 for RRS and 10−1 to 10 for fluorescence, depending on the quantum yield of the molecular fluorescence. A model, developed on heuristic grounds and substantiated using the density matrix formalism, describes the light scattering processes and the effects of the plasma resonance. This model presents a unified picture of the surface‐induced enhancement effects and is consistent with the experimental values. The comparison of all the forms of optical scattering leads to a complete determination of the role of the plasma resonances in the various portions of the scattering process. The excitation of the electronic plasma resonance results in an increased local field at the molecules leading to an increased excitation or absorption rate. Similarly, the excitation of the plasma resonance by the molecular emission dipole results in an increase in the radiative decay rate. However, the electromagnetic coupling of the molecule to the plasma resonance also adds an additional damping channel which can result in a reduction of the absorption or excitation rate as well as the emission yield. The resultant balance of these processes leads to the hierarchy in the measured enhancements. The hierarchy of enhancements is also shown to have important spectroscopic consequences.

472 citations


Network Information
Related Topics (5)
Dielectric
169.7K papers, 2.7M citations
87% related
Scattering
152.3K papers, 3M citations
86% related
Raman spectroscopy
122.6K papers, 2.8M citations
86% related
Laser
353.1K papers, 4.3M citations
85% related
Polymer
131.4K papers, 2.6M citations
85% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023235
2022537
2021485
2020680
2019751
2018799