Jean-Pierre Laude - Academia.edu (original) (raw)

Papers by Jean-Pierre Laude

Conference on Lasers and Electro-Optics, 1986

Proceedings of IEE/LEOS Summer Topical Meetings: Integrated Optoelectronics

Thermal Stability of Wavelength Division Multiplexers with 20 Channels Spaced at 1NM J. P. Laude,... more Thermal Stability of Wavelength Division Multiplexers with 20 Channels Spaced at 1NM J. P. Laude, J. C. Gautherin, I. Long, D. Fessard, ZSA , Jobin Yvon, France Monoblock components using all single mode fibers with lnm wavelength spacing from 1540 nm to 1559 nm were manufactured. Between -20°C and + 60°C the wavelength stability was 0.0 12 and 0.0004 nm/"C for components respectively non thermocontroled and thermocontroled. The absolute wavelength of each channel can be specified within +-.03 nm at a given temperature.

$Research paper thumbnail of Very dense N∗N wavelength routers based on a new diffraction grating configuration$

11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97

Dense N*N Wavelength Routers were designed based on diffraction grating technology. A 22*22 route... more Dense N*N Wavelength Routers were designed based on diffraction grating technology. A 22*22 router with 0.8 nm spacing, 2.4 dB losses, and -40 dB crosstalk was manufactured. We show the possibility of making devices with much smaller spacings.

MNTV, 2022

Linceul de Turin : l'interaction de rayons gamma (γ) dans la tombe peut-elle expliquer une radio-... more Linceul de Turin : l'interaction de rayons gamma (γ) dans la tombe peut-elle expliquer une radio-datation biaisée et « l'inexplicable » image ?

MNTV, 2022

As early as 1989, Father Jean-Baptiste Rinaudo 2 formulated the hypothesis that a physical reacti... more As early as 1989, Father Jean-Baptiste Rinaudo 2 formulated the hypothesis that a physical reaction could explain both the abnormal result of the C14 dating, made a year earlier, and the formation of the body imprint which appears on the Shroud of Turin. 3 In this article, Jean-Pierre Laude extends and completes the hypothesis of the physical reaction, was be caused by gamma rays inside the tomb, possibly generated by a meteorological phenomenon. The scientific committee of SPIE (The International Society for Optics and Photonics) deemed his proposal interesting enough to be included in the program of a Colloquium held in Strasbourg last May. The text of the article below is intended for the majority of readers who are not specialists in this scientific field. But expert readers can find the French translation of the full text of the study on the MNTV 4. 1 Member of MNTV (Montre Nous Ton Visage: which means Show us Yours Face. An association devoted to Knowledge and Contemplation of the Turin Shroud), author in its publications, in science (Cahiers 57, 64 and 68 which is the French version of this article) and in history (Cahiers 51 and 67),

Unconventional Optical Imaging III, 2022

Frontiers in Optics 2016, 2016

Coupled Raman and Energy Dispersive Spectra show a substance fully compatible with oxidative ring... more Coupled Raman and Energy Dispersive Spectra show a substance fully compatible with oxidative ring cleavage products of the heme of blood, namely biliverdin-derived compounds. A weak line is tentatively attributed to amide I of proteins.

$Research paper thumbnail of Diffraction Gratings WDM Components$

Springer Series in Optical Sciences

Diffraction grating WDM components have tremendous capability in number of channels (160 channel ... more Diffraction grating WDM components have tremendous capability in number of channels (160 channel components and more with bi-directionality are commercially available and components with two times more channels have been demonstrated experimentally). They have a high free spectral range (typically 775 nm with gratings working in the first order). Small spacing such as 25 GHz is commercially available and 5 GHz feasibility has been demonstrated. Athermal glass components down to 25 GHz spacing are manufactured with uncontrolled drifts as low as 0.35 pm/°C using commonly available glasses. These solutions are based on the traditional and mature optics technology used to manufacture millions of diffractionlimited reliable optics at low cost. The unique three-dimensional nature of these components can be exploited for advanced features requested by network designers such as add/drops, crossconnects, and routing devices. Cyclic passive routers accurately matched to the ITU frequencies in DWDM or to ITU wavelengths in CWDM have been proposed for advanced networks. Diffraction grating components can be used for high quality bidirectional links. For mono-directional or bi-directional links they have virtually unlimited numbers of channels and provide the lowest crosstalk for the higher number of channels. For low cost mass production the problems of fibre handling, that are the same with any solution, remain to be solved.

$Research paper thumbnail of Wavelength Division Multiplexing/Demultiplexing (WDM) Using Diffraction Gratings$

Application, Theory, and Fabrication of Periodic Structures, DiffractionGratings, and Moire Phenomena II, 1984

This paper reviews the present status of diffraction grating based wavelength division multiplexe... more This paper reviews the present status of diffraction grating based wavelength division multiplexer/demultiplexers (WDM). A comparison is made of WDM's currently in commercial use with both monomode and multimode fibres. Devices are described ranging from an industrial system multiplexing and demultiplexing 49 channels to a 12-channel monomode demultiplexer. The discussion includes multi-multiplexers in which several multiplexers share a common optical element.

$Research paper thumbnail of <title>Diffraction Gratings Ruled And Holographic - A Review</title>$

Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, 1981

Diffraction gratings have been evolving steadily over the last ten years. Modern ruling engines h... more Diffraction gratings have been evolving steadily over the last ten years. Modern ruling engines have permitted classically ruled gratings to be more efficient with flatter diffracted wavefront than ever before. Examples include sophisticated laser gratings with up to 97.5% efficiency and flatness of better than λ/3 in 17th order 6328X. Holographically recorded diffraction gratings continue to evolve with the development of blazed plane gratings and with groove densities of up to 6000g/mm. Concave holographic gratings now range from toroidal aberration corrected gratings,for use in the soft x-ray, to flat field spectrographs and scanning spectrographs operating out into the infra-red.

$Research paper thumbnail of Aberration Corrected Holographically Recorded Diffraction Gratings$

Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, 1981

This paper outlines how ray trace techniques can be used to predetermine new configurations of mo... more This paper outlines how ray trace techniques can be used to predetermine new configurations of monochromator and spectrograph gratings. Examples of Rowland Circle aberrations vs. aberration corrected configurations are given in which it has been seen that astigmatism can sometimes be reduced by over a factor of 10. When non-Rowland Circle configurations are used, astigmatism can often be reduced to zero. This is demonstrated in a new type of grating that acts as a scanning flat field spectrograph operating at better than F3 from 600-1200nm.

3rd European Electro-Optics Conf, 1977

We have developed a jet stream dye laser which operates with an argon or krypton laser pump. With... more We have developed a jet stream dye laser which operates with an argon or krypton laser pump. With a 3000 grooves per mm holographic grating, we can demonstrate that the system is a longitudinal single mode without any additive, optical component. The high quality of the exit beam, coupled with its remarkable efficiency, allows this laser to be used in frequency doubling experiments and in pumping of other dy lasers (for example, cresyl violet). Some potential applications in spectroscopy, in particular in the field of Raman Spectroscopy and Atomic Absorption are discussed.

Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology, 1989

According to Kirchhoff and Planck's laws, it may be demonstrated that the measurement of the ... more According to Kirchhoff and Planck's laws, it may be demonstrated that the measurement of the thermal radiation of a source, at n wavelengths, allows the determination of both its emissivity and its true temperature (T); the emissivity being described by an expansion in n-2 wavelengths. The accuracy of both thermal radiation and emissivity measurements, theoretically, grows with n for sources with purely thermal radiation.

Applied Optics, 1980

The first results of a theoretical and experimental study are presented showing that a significan... more The first results of a theoretical and experimental study are presented showing that a significant enhancement of the efficiency of gratings used as wavelength selectors for cw tunable lasers may be achieved with adequate dielectric coatings. It is found that, in some cases, the energy absorbed by the grating surface can be reduced by a factor >2. The output power of a cw Rh640 dye laser was practically multiplied by the same factor. It seems that holographic gratings are more adaptable than are ruled gratings to this utilization.

Optical and Quantum Electronics, 1994

This paper reviews results achieved in high-capacity optical networking for television studios un... more This paper reviews results achieved in high-capacity optical networking for television studios under RACE projects 1036 and 2001. A network based on wavelength- and time-division multiplexing (WTDM) has been demonstrated, which, using 16 wavelengths, provides a total capacity of 39.8 Gbit s-1. We summarize previously reported results obtained in the system test-bed, which demonstrate the distribution of uncompressed digital video

Journal of Lightwave Technology, 1993

Optical networks promise the very high capacities needed to keep pace with an ever increasing dem... more Optical networks promise the very high capacities needed to keep pace with an ever increasing demand. This paper discusses the major issues that affect the design of a practical, high capacity optical broadcast network for use in a television studio. The emphasis is on the development of an installable rather than an experimental system. The constraints imposed by practical components are discussed and a number of novel multiple star architectures are presented.

Turin Shroud: neutrons and protons produced by interaction of γ photons with the buried body, i.e... more Turin Shroud: neutrons and protons produced by interaction of γ photons with the buried body, i.e. reaction 16 O(γ,n) 15 O in giant dipole resonance, followed by 14 N(n,p) 14 C, could have biased radiodating, and formed the image.

Conference on Lasers and Electro-Optics, 1986

Proceedings of IEE/LEOS Summer Topical Meetings: Integrated Optoelectronics

$Research paper thumbnail of Very dense N∗N wavelength routers based on a new diffraction grating configuration$

11th International Conference on Integrated Optics and Optical Fibre Communications. 23rd European Conference on Optical Communications IOOC-ECOC97

MNTV, 2022

Unconventional Optical Imaging III, 2022

Frontiers in Optics 2016, 2016

$Research paper thumbnail of Diffraction Gratings WDM Components$

Springer Series in Optical Sciences

$Research paper thumbnail of Wavelength Division Multiplexing/Demultiplexing (WDM) Using Diffraction Gratings$

Application, Theory, and Fabrication of Periodic Structures, DiffractionGratings, and Moire Phenomena II, 1984

$Research paper thumbnail of <title>Diffraction Gratings Ruled And Holographic - A Review</title>$

Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, 1981

$Research paper thumbnail of Aberration Corrected Holographically Recorded Diffraction Gratings$

Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, 1981

3rd European Electro-Optics Conf, 1977

Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology, 1989

Applied Optics, 1980

Optical and Quantum Electronics, 1994

Journal of Lightwave Technology, 1993

STATS-2019 "Science, Theology and the Turin Shroud" International Conference, Aug. 14-17, 2019. Redeemer University College, Ancaster, ON, Canada. , 2019

Title: A comparison of “Christ The Teacher” a statue at the Chartres Cathedral with the Turin Shr... more Title: A comparison of “Christ The Teacher” a statue at the Chartres Cathedral with the Turin Shroud raises interesting questions of the Shroud’s history.
Jean-Pierre Laude jplaude@orange.fr

Abstract: A comparison between the Shroud of Turin (TS) and "Christ The Teacher" (CT) statue of the South Porch, shows a similarity that provides a clue which can be added to other evidence for the existence of the TS prior to 1260–1390 radiodating of 1988. The cathedral was built partly from 1145, rebuilt after the fire of 1194, and the CT statue was carved between 1205 and 1215. Othon de la Roche was accused of taking the Shroud to Athens in 1204. Was he secretly summoned by Innocent III to give it to the Templars which Innocent once wanted to be affiliated with? Othon, who was excommunicated by Innocent in 1213 for theft of ecclesiastic goods, was dis-excommunicated later. Did Othon restore the Shroud to Baudoin IX, who retro ceded it to St Louis? Did Othon send it to his family, or to Archbishop of Besançon, or to Bellevaux Abbaye? Then, was the TS entrusted to the Templars as seems likely from some testimony of their trial (e.g. Arnaut Sabbatier 1287). Templars played an important role in rebuilding the Cathedral after its 1194 fire. Guillaume de Chartres, was Templar Master 1210-1218. The similarity between TS and CT could indicate the knowledge of TS in Chartres at the time. Above the portal, Jesus with Mary and John intercede for humanity and six angels carry the Passion instruments whip, spear, crown of thorns, nails, and two angels hold Shroud and Cross.

Titre Une comparaison du “Christ Enseignant” de la cathédrale de Chartres avec le linceul de Turin soulève d'intéressantes questions sur l’histoire du Linceul. Jean-Pierre Laude jplaude@orange.fr

Résumé: Une comparaison entre le Suaire de Turin (TS) et la statue du "Christ l'Enseignant" (CT) South Porch, montre une similitude qui donne un indice supplémentaire à d’autres preuves prouvant l'existence du TS avant 1260–1390 l'intervalle de date donné par la radio-datation de 1988. La cathédrale a été construite en partie à partir de 1145, reconstruite après l'incendie de 1194, et la statue de CT a été sculptée entre 1205 et 1215. Othon de la Roche a été accusé d’avoir emporté le Saint Suaire à Athènes en 1204. A-t-il été sommé secrètement par Innocent III de le donner aux Templiers avec lesquels il avait voulu être affilié dans le passé? Othon,qui a été excommunié par Innocent en 1213 pour vol de biens ecclésiastiques, a été des-excommunié plus tard. Othon a-t-il restauré le Suaire à Baudoin IX, qui l'aurait rétrocédé à St Louis? Othon l'a-t-il envoyé à sa famille ou à l'archevêque de Besançon ou à l'Abbaye de Bellevaux? Ensuite, le TS a-t-il été confié aux Templiers comme il semble probable d'après certains témoignages de leur procès (par exemple, Arnaut Sabbatier 1287). Les Templiers ont joué un rôle important dans la reconstruction de la cathédrale après son incendie de 1194. Guillaume de Chartres, était le maître des templiers de 1210 à 1218. La similarité entre le TS et le CT pourrait indiquer la connaissance du TS à Chartres en ce temps. Au-dessus du portail, Jésus, Marie et Jean intercèdent pour l'humanité et six anges portent les instruments de la Passion: fouet, lance, couronne d'épines, clous et deux anges tiennent le Suaire et la Croix.

Jean-Pierre Laude, "Raman and Fluorescence spectra of UV or proton exposed linens, tentative to evaluate some of the hypotheses on the Shroud of Turin image formation", The 26th International Conference on Raman Spectroscopy (ICORS 2018) August 26~31, 2018 , Jeju, Korea., 2018

Among many other conjectures about the process of the image formation on the Shroud of Turin, it ... more Among many other conjectures about the process of the image formation on the Shroud of Turin, it has been hypothesized that the faint yellowed body image apparent on this famous archaeological linen cloth could have been radiation-based imprinted in unknowned circumstances: by UV photons as hypothesized by G. Baldacchini and others, by protons as hypothesized J-B Rinaudo, or by any kind of energy radiation. From our tests we conclude that: - For UV and protons illuminations photochemical reactions of the flax at shallow depth from the surface, without thermolysis, can be revealed by modifications of color and Raman spectrum. At large intensity and long duration a thermolysis can be revealed by birefringence destruction, noticeable fluorescence and strong Carbon bands in Raman. - Among available excitations λe = 473 nm and 830 nm respectively.for Fluorescence and Raman gave the best results, - The possibility of obtaining photochemical reactions of the cellulose of linen without thermolysis with illumination at 325 nm was shown by darkening and Raman spectrum modification. - On linen irradiated under protons by J-B Rinaudo, the Raman spectrum of cellulose disappears and the fluorescence increases significantly. This does not in itself invalidate his theory but it means that he used too intense and too long flux. - As shown long ago the image of the Shroud. is not more fluorescent than its background. So the image on the Shroud could not be obtained by protons as intense and as long as in Rinaudo experiments. - More generally any hypothesis of an image drawn on the Shroud by a thermal effect of any kind must be rejected: if it were so this image would be fluorescent, but as shown long ago this image is not more fluorescent than its background. - The hypothesis, that the image could have been imprinted by UV or protons or any kind of energy radiation, can be preserved only if a notion of very high energy + ultra-short duration allowing chemical reaction without pyrolysis is added.

Proc. SPIE 12136, Unconventional Optical Imaging III, 121360Z (20 May 2022), 2022

Suaire de Turin : des neutrons et des protons produits par l'interaction des photons γ avec le co... more Suaire de Turin : des neutrons et des protons produits par l'interaction des photons γ avec le corps dans son Linceul, c'està-dire la réaction 16 O(γ, n) 15 O en résonance dipolaire géante (GDR), suivie de 14 N(n, p) 14 C, pourraient avoir biaisé la datation et formé l'image.