Talbot mundy
162199569
Talbot Mundy, Philosopher of Adventure: A Critical Biography
Jeff Evans
191408228
Philosophy Into Popular Fiction: Talbot Mundy and The Theosophical Society
THE AMERICA of the 1920s, when the loudest voices in religion were arguing over fundamentalism and modernism as the only available choices, and long before "Shangri La" had become a popularly accepted myth, a vanguard movement was promoting the alternative of the wisdom of the Orient. This was the Theosophical Society, which had a distinct advantage over other fringe groups in spreading their ideals through the skill and charisma of the acclaimed and widely read author, Talbot Mundy (1879 1940) Writing adventure stories in the tradition of Rudyard Kipling, H. Rider Haggard and Joseph Conrad, Mundy added greater complexity to the genre by succeeding in the unlikely feat of mixing in an undercurrent of philosophy.1 The harmonizing of these seemingly antithetical elements was all the more remarkable because the philosophy was of a theosophical nature, a type unfamiliar to most readers and regarded as foreign, if not on the edge of respectability. Mundy was inspired to this endeavor while residing at the society headquarters on Point Loma, writing a whole series of works using theosophical ideals as their centerpiece, thereby introducing the beliefs of the Far East to a mass public in an accepted and entertaining form.2 Although periodically discussing his views in the more traditional form of essays and poetry, he primarily used novels, both literary and popular, for his purpose, thereby altering the adventure genre by rejecting its typical attitude of Occidental superiority and prejudice towards the Orient. When Mundy came to Point Loma he found a spot where East truly met West. There, on a peninsula off San Diego, a theosophical community had been founded in 1897 by an intrepid and determined woman, Katherine Tingley, which by the 1920s had attracted some
Brian Taves
165342568
Talbot Mundy, Philosopher of Adventure: A Critical Biography
Brian Taves
191423103
Episodes in the Publishing of Talbot Mundy's "The Ivory Trail"
Louis E Lambert
206294822
Self Focusing and the Talbot Effect in Conformal Transformation Optics.
Transformation optics has been used to propose various novel optical devices. With the help of metamaterials, several intriguing designs, such as invisibility cloaks, have been implemented. However, as the basic units should be much smaller than the working wavelengths to achieve the effective material parameters, and the sizes of devices should be much larger than the wavelengths of illumination to work within the light ray approximation, it is a big challenge to implement an experimental system that works simultaneously for both geometric optics and wave optics. In this Letter, by using a gradient index microstructured optical waveguide, we realize a device of conformal transformation optics (CTO) and demonstrate its self focusing property for geometry optics and the Talbot effect for wave optics. In addition, the Talbot effect in such a system has a potential application to transfer digital information without diffraction. Our findings demonstrate the photon controlling ability of CTO in a feasible experiment system.
Physical review letters
Xiangyang Wang Huanyang Chen Huijun Liu Li-wen Xu Chong Sheng Shining Zhu
39835150
On the structure of quadratic Gauss sums in the Talbot effect.
We report on the detailed derivation of the Gauss sums leading to the weighting phase factors in the fractional Talbot effect. In contrast to previous approaches, the derivation is directly based on the two coprime integers p and q that define the fractional Talbot effect so that, using standard techniques from the number theory, the computation is reduced, up to a global phase, to the trivial completion of the exponential of the square of a sum. In addition, it is shown that the Gauss sums can be reduced to only two cases, depending on the parity of integer q. Explicit and simpler expressions for the two forms of the Talbot weighting phases are also provided. The Gauss sums are presented as a discrete Fourier transform pair between quadratic phase sequences showing perfect periodic autocorrelation and a connection with the theory of biunimodular sequences is presented. In addition, the Talbot weighting factors of orders 1/q and 2/q are reduced to a closed form, and the equivalence to existing characterizations of Talbot weighting phases is also discussed. The relationship with one dimensional multilevel phase structures is exemplified by the study of Talbot array illuminators. These results simplify and extend the description of the role played by Gauss sums in the fractional Talbot effect, providing a compact synthesis of previous results.
Journal of the Optical Society of America. A, Optics, image science, and vision
Carlos R Fernandez-Pousa
118529098
Observation of electromagnetically induced Talbot effect in an atomic system with nonlinearity
The electromagnetically induced Talbot effect (EITE) resulting from the repeated self reconstruction of a spatially intensity modulated probe field is experimentally demonstrated in a three level atomic configuration. The probe beam is launched into an optically induced lattice (established by the interference of two coupling fields) inside a rubidium vapor cell and is diffracted by the electromagnetically induced grating that was formed. The diffraction pattern repeats itself at the planes of integer multiple Talbot lengths. In addition, a fractional EITE is also investigated. The experimental observations agree well with the theoretical predictions. This investigation may potentially pave the way for studying the nonlinear and quantum dynamical features that have been predicted for established periodic optical systems.
Zhao-yang Zhang Xing Liu Dan Zhang Jiteng Sheng Yiqi Zhang Yanpeng Zhang Min Xiao
42342298
Talbot Effect for Exciton Polaritons.
We demonstrate, experimentally and theoretically, a Talbot effect for hybrid light matter waves an exciton polariton condensate formed in a semiconductor microcavity with embedded quantum wells. The characteristic "Talbot carpet" is produced by loading the exciton polariton condensate into a microstructured one dimensional periodic array of mesa traps, which creates an array of phase locked sources for coherent polariton flow in the plane of the quantum wells. The spatial distribution of the Talbot fringes outside the mesas mimics the near field diffraction of a monochromatic wave on a periodic amplitude and phase grating with the grating period comparable to the wavelength. Despite the lossy nature of the polariton system, the Talbot pattern persists for distances exceeding the size of the mesas by an order of magnitude. Thus, our experiment demonstrates efficient shaping of the two dimensional flow of coherent exciton polaritons by a one dimensional "flat lens."
Physical review letters
T Gao E Estrecho G L Li Oleg A Egorov X Ma Karol Winkler Martin Kamp Christian Schneider Sven Hofling Andrew G Truscott Elena A Ostrovskaya
138425097
Patterning of nanodot arrays using EUV achromatic Talbot lithography at the Swiss Light Source and Shanghai Synchrotron Radiation Facility
Achromatic Talbot lithography (ATL) at extreme ultraviolet (EUV) wavelengths has been used to produce one or two dimensional periodic patterns over large areas. In this work, an ATL transmission mask was used to perform EUV exposures at 13.5nm and 8.8nm illumination wavelengths at two different synchrotron facilities, to study the broadband nature of the method and the used mask as well as to investigate the influence of illumination parameters and experimental arrangements. The experiments were performed at the Swiss Light Source (SLS) PSI, Switzerland, and at the Shanghai Synchrotron Radiation Facility (SSRF) P. R. China. Achromatic Talbot lithography was proven to be a simple and robust interference lithography scheme for producing large area and high resolution patterns suitable for different wavelengths and for a variety of EUV sources and setups. Display Omitted High resolution patterning of 20nm dots at 100nm pitch using achromatic Talbot lithography at broadband EUV illumination.Easy to fabricate ATL mask for efficient nano lithography with various EUV beamlines of differing illumination parameters.Exposures at the Swiss Light Source and the Shanghai Synchrotron Radiation Facility were performed and compared.
Daniel Fan Elizabeth Buitrago Shumin Yang Waiz Karim Yanqing Wu Renzhong Tai Yasin Ekinci
43686762
On the generality of the Talbot condition for inducing self imaging effects on periodic objects.
Integer and fractional self imaging effects can be induced on periodic waveforms across the time, frequency, space, or angular frequency domains by imposing a quadratic phase profile along the corresponding Fourier dual domain. This phase must satisfy the well known "Talbot condition." The resulting period divided fractional self images exhibit deterministic pulse to pulse phase variations that arise from the solution of a Gauss sum. In turn, these self images can be regarded as inducing a Talbot effect in the Fourier dual domain. This suggests the possibility of observing self imaging effects by imposing phase profiles that are not defined by the Talbot condition. In this Letter, we show otherwise that the phase profiles retrieved from a Gauss sum also satisfy the Talbot condition, which implies that this condition may encompass all possible quadratic phase patterns for inducing self imaging effects. We establish here the precise relationships between the solutions of Gauss sums and the corresponding Talbot phases, and derive additional properties of Talbot phase patterns of fundamental and practical interest.
Optics letters
Luis Romero Cortes Hugues Guillet de Chatellus Jose Azana