다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

This paper describes the contents of the 2016 edition of the HITRAN molecular spectroscopic compilation. The new edition replaces the previous HITRAN edition of 2012 and its updates during the intervening years. The HITRAN molecular absorption compilation is composed of five major components: the traditional line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, infrared absorption cross-sections for molecules not yet amenable to representation in a line-by-line form, collision-induced absorption data, aerosol indices of refraction, and general tables such as partition sums that apply globally to the data. The new HITRAN is greatly extended in terms of accuracy, spectral coverage, additional absorption phenomena, added line-shape formalisms, and validity. Moreover, molecules, isotopologues, and perturbing gases have been added that address the issues of atmospheres beyond the Earth. Of considerable note, experimental IR cross-sections for almost 300 additional molecules important in different areas of atmospheric science have been added to the database. The compilation can be accessed through www.hitran.org. Most of the HITRAN data have now been cast into an underlying relational database structure that offers many advantages over the long-standing sequential text-based structure. The new structure empowers the user in many ways. It enables the incorporation of an extended set of fundamental parameters per transition, sophisticated line-shape formalisms, easy user-defined output formats, and very convenient searching, filtering, and plotting of data. A powerful application programming interface making use of structured query language (SQL) features for higher-level applications of HITRAN is also provided.

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The HITRAN 2008 molecular spectroscopic database

A topical review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime. Results from numerical simulations are used to discuss the temporal and spectral characteristics of the supercontinuum, and to interpret the physics of the underlying spectral broadening processes. Particular attention is given to the case of supercontinuum generation seeded by femtosecond pulses in the anomalous group velocity dispersion regime of photonic crystal fiber, where the processes of soliton fission, stimulated Raman scattering, and dispersive wave generation are reviewed in detail. The corresponding intensity and phase stability properties of the supercontinuum spectra generated under different conditions are also discussed.

Supercontinuum generation in photonic crystal fiber

to be done in this area. Face recognition is a problem that scarcely clamoured for attention before the computer age but, having surfaced, has involved a wide range of techniques and has attracted the attention of some fine minds (David Mumford was a Fields Medallist in 1974). This singular application of mathematical modelling to a messy applied problem of obvious utility and importance but with no unique solution is a pretty one to share with students: perhaps, returning to the source of our opening quotation, we may invert Duncan's earlier observation, 'There is an art to find the mind's construction in the face!'.

Linear and nonlinear waves, by G. B. Whitham. Pp.636. £50. 1999. ISBN 0 471 35942 4 (Wiley).

(b) Write out the equations for the time dependence of ρ11, ρ22, ρ12 and ρ21 assuming that a light field interaction V = -μ12Ee iωt + c.c. couples only levels |1> and |2>, and that the excited levels exhibit spontaneous decay. (8 marks) (c) Under steady-state conditions, find the ratio of populations in states |2> and |3>. (3 marks) (d) Find the slowly varying amplitude ̃ ρ 12 of the polarization ρ12 = ̃ ρ 12e iωt . (6 marks) (e) In the limiting case that no decay is possible from intermediate level |3>, what is the ground state population ρ11(∞)? (2 marks) 2. (15 marks total) In a 2-level atom system subjected to a strong field, dressed states are created in the form |D1(n)> = sin θ |1,n> + cos θ |2,n-1> |D2(n)> = cos θ |1,n> sin θ |2,n-1>

The Quantum Theory of Light

Nous etudions experimentalement la propagation non-lineaire d'une onde continue menant a l'emergence d'impulsions au sommet plat et sans derive de frequence. Ces impulsions, appelees flaticons, subissent une evolution auto-similaire de leur partie centrale et presentent des oscillations temporelles marquees dans leurs flancs.

https://hal.archives-ouvertes.fr/hal-01066483/document

Émergence de flaticons dans les fibres optiques

http://ieeexplore.ieee.org/iel4/5799/15473/00714970.pdf

Dark and Gray Soliton-Like Pulse Train Generation from Induced Modulational Instability in Highly Birefringent Fibers

The instabilities that arise from electromagnetic wave propagation in optical fibers have been the subject of extensive study in recent years.

Generation and characterization of 0.6 THz polarization domain wall trains in a spun fiber

In the present work we study both experimentally and theoretically in optical fiber systems, the four-wave interactions between the polarization states of a pump wave and of a counter-propagating signal wave. In particular we report a novel phenomenon of attraction characterized by the evolution of the signal wave towards a well determined polarization state that is independent of the initial polarization state of the signal wave. We show that this fascinating attraction process appears with temporally coherent waves, and also remarkably, with temporally incoherent waves. We also illustrate the polarization attraction process in the case of an isotropic fiber for different degrees of temporal coherence of the pump and signal waves. Finally, we discuss applications of the polarization attraction process for optical transmission and signal processing systems.

Nonlinear polarization effects

We experimentally study the interplay of Kerr and Raman beam cleanup in multimode air-silica microstructure optical fiber. The interplay of modal four-wave mixing and Raman scattering leads to high-brightness multimode supercontinuum.

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Guy Millot

Papers

Émergence de flaticons dans les fibres optiques

Dark and Gray Soliton-Like Pulse Train Generation from Induced Modulational Instability in Highly Birefringent Fibers

Generation and characterization of 0.6 THz polarization domain wall trains in a spun fiber

Nonlinear polarization effects

Kerr and Raman beam cleanup with supercontinuum generation in multimode microstructure fiber