Optical properties of polarization-dependent geometric phase elements with partially polarized light

2006 ◽  
Vol 266 (2) ◽  
pp. 365-375 ◽  
Author(s):  
Yuri Gorodetski ◽  
Gabriel Biener ◽  
Avi Niv ◽  
Vladimir Kleiner ◽  
Erez Hasman
Author(s):  
Marcos F. Maestre

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.


2012 ◽  
Vol 16 (1) ◽  
pp. 36-41
Author(s):  
Sun Kyung Choi ◽  
Young Jun Yang ◽  
Kyung Nam Kim ◽  
Jaewook Choi ◽  
Yeong Jin Choi ◽  
...  

Pramana ◽  
1997 ◽  
Vol 48 (5) ◽  
pp. 969-975 ◽  
Author(s):  
Joseph Samuel ◽  
Supurna Sinha

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Manu Mitra

Abstract: Quantum dots have interesting optical properties. They absorb incoming light of one color and emit out light of a completely different color. This research paper discloses eigen states of a simple and multilayer quantum dot in various structures for cuboid, cylinder, dome, cone, and pyramid, and its three-dimensional wave function, energy states, light and dark transitions (X-polarized), light and dark transitions (Y-polarized), light and dark transitions (Zpolarized), light and dark transitions (phi = 0 and theta= 45), absorption (phi = 0 and theta = 45), absorption sweep of angle theta, and integrated absorption are plotted and the observations of high peak values are noted and documented.


Author(s):  
Arie Poldervaart

Interest in the orthopyroxene series is evidenced by the great number of publications on that subject which appeared in the literature. Correlations of the chemical composition and optical properties were attempted by Winchell (1923, 1933), Walls (1935), Henry (1935), and Hess and Phillips (1940). The nomenclature of the series was discussed by Winchell (1923), Alling (1936), and Hess and Phillips (1940). The obscure phenomena exhibited by certain orthopyroxenes in polarized light, attributed by some to twinning, by others to exsolution, was noted by a great many petrologists, of whom are mentioned here Lewis (1908), Holmes and Harwood (1928), Guimarães (1933), Scholtz (1936), Hess and Phillips (1938, 1940), Kuschke (1939), Wager and Deer (1939), Nel (1940), Walker (1940, 1943), Walker and Poldervaart (1940, 1941), Edwards (1942), Henry (1942), and Poldervaart (1944, 1946).


2006 ◽  
Vol 203 (8) ◽  
pp. 2044-2048
Author(s):  
Haifeng Qi ◽  
Aijian Wei ◽  
Qingpu Wang ◽  
Duorong Yuan

2002 ◽  
Vol 09 (02) ◽  
pp. 1173-1177 ◽  
Author(s):  
A. CHASSÉ ◽  
L. NIEBERGALL

We have investigated the influence of optical properties of Cu(001) on the spin polarization in Cu 3p photoelectron diffraction patterns. The refraction and absorption of light have been taken into account in the calculation of the dipole transition matrix element. Therefore, a general polarization vector of light is defined within a macroscopic theory of electromagnetic fields. Results are shown and discussed for Cu 3p photoelectrons excited by linearly or circularly polarized light, respectively. It is shown that the optical behavior of crystals may cause a symmetry breaking in the angular dependence of the photoelectron intensity. Besides, there are strong quantitative changes in the related spin polarization of Cu 3p photoelectrons.


2002 ◽  
Vol 09 (01) ◽  
pp. 473-477 ◽  
Author(s):  
L. PAJASOVÁ ◽  
L. SOUKUP ◽  
L. JASTRABÍK ◽  
D. CHVOSTOVÁ

The optical constants and dielectric functions of a series of samples of glassy carbon subjected to a heat treatment from 1000°C to 3000°C have been evaluated in the spectral region of 1.5–13.8 eV. In the region of 1.5–5.0 eV the method of spectroscopic ellipsometry and multiangle reflectivity with p-polarized light was applied, while in the VUV region the optical constants were evaluated by means of multiangle reflectivity with partially polarized light as well as by means of Kramers–Kronig analysis. The optical spectra are discussed, in analogy with graphite, in terms of single-electron transitions and π electron plasma excitations. The changes in the spectra by heating are ascribed to increasing average size of ordered regions and sample densification in the absence of three-dimensional graphitization.


1989 ◽  
Vol 43 (3) ◽  
pp. 473-476 ◽  
Author(s):  
George Carson ◽  
Steve Granick

A method is described for obtaining infrared spectra of an organic monolayer film on muscovite mica. This task is normally difficult because mica is not metallic, and it has biaxial optical properties and produces large interference fringes when analyzed in transmission or reflection because of reflections off the front and back of a sheet. The method involves the transmission of parallel-polarized light, incident at the Brewster's angle, through a mica sheet that is oriented along one of its principal optical directions.


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