Academic literature on the topic 'Harmonic generation; Ionisation suppression'

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Journal articles on the topic "Harmonic generation; Ionisation suppression"

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REED, VALERIE C. "SUPERINTENSE FIELD IONISATION SUPPRESSION IN THE HIGH FREQUENCY REGIME." Modern Physics Letters B 06, no. 12 (1992): 683–701. http://dx.doi.org/10.1142/s0217984992000776.

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We present a brief review of the subject of ionisation suppression, or atomic stabilisation, in intense laser fields. As a preliminary, we outline the general non-linear response of an atom to a strong laser field, describing multiphoton ionisation and harmonic generation. We then discuss methods of suppressing the ionisation rate from an atom, considering two broad regimes: strong field ionisation (I < 1016 W/cm 2), in which the suppression mechanism in generally interpreted in terms of quantum interference; and superintense field ionisation (I > 1016 W/cm 2), in which the Kramers-Henne
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Proctor, M. J., J. A. D. Stockdale, T. Efthimiopoulos, and C. Fotakis. "Third-harmonic generation and ionisation processes in Kr." Chemical Physics Letters 137, no. 3 (1987): 223–25. http://dx.doi.org/10.1016/0009-2614(87)80208-7.

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Moreno, Pablo, Luis Plaja, Victor Malyshev, and Luis Roso. "Influence of barrier suppression in high-order harmonic generation." Physical Review A 51, no. 6 (1995): 4746–53. http://dx.doi.org/10.1103/physreva.51.4746.

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Jeys, Thomas H. "Suppression of laser spiking by intracavity second harmonic generation." Applied Optics 30, no. 9 (1991): 1011. http://dx.doi.org/10.1364/ao.30.001011.

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Ashfold, M. N. R., C. D. Heryet, J. D. Prince, and B. Tutcher. "Competition between resonance-enhanced multiphoton ionisation and third-harmonic generation in acetylene vapour." Chemical Physics Letters 131, no. 4-5 (1986): 291–97. http://dx.doi.org/10.1016/0009-2614(86)87153-6.

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Mitra, S., S. Biswas, J. Schötz, et al. "Suppression of individual peaks in two-colour high harmonic generation." Journal of Physics B: Atomic, Molecular and Optical Physics 53, no. 13 (2020): 134004. http://dx.doi.org/10.1088/1361-6455/ab859c.

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Martin, K. I., W. A. Clarkson, and D. C. Hanna. "Self-suppression of axial mode hopping by intracavity second-harmonic generation." Optics Letters 22, no. 6 (1997): 375. http://dx.doi.org/10.1364/ol.22.000375.

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French, P. M. W., and D. S. McCallum. "Suppression of low-intensity features using second-harmonic generation and amplification." Optics Letters 14, no. 19 (1989): 1077. http://dx.doi.org/10.1364/ol.14.001077.

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Li, Xin Jun. "Analysis and Suppression Strategy of Harmonics for SPWM Inverter." Advanced Materials Research 588-589 (November 2012): 454–57. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.454.

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The three-phase voltage type SPWM inverter output voltage and current harmonic and its generation rule is discussed. And put forward a new easy to implement harmonic suppression strategy, the method through the correct choice of the carrier frequency and the sinusoidal wave superimposed on a three wave makes saddle shaped wave, to produce a corresponding SPWM waveform control inverter switch on-off thus improving the output waveform. Mathematical analysis shows that is helpful to reduce the output voltage THD ( waveform distortion factor ), improved harmonic current loss and torque characteris
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Zhang, Qi, Kun Zhao, Jie Li, et al. "Suppression of driving laser in high harmonic generation with a microchannel plate." Optics Letters 39, no. 12 (2014): 3670. http://dx.doi.org/10.1364/ol.39.003670.

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Dissertations / Theses on the topic "Harmonic generation; Ionisation suppression"

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Watson, John Brian. "The theory of atoms interacting with intense laser fields." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337429.

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Mese, Emine. "Floquet calculations of rates of frequency conversion and multiphoton ionisation in intense laser field." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4697/.

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Nonperturbative rates of harmonic generation or frequency mixing and rates of multiphoton ionisation were obtained for atomic hydrogen and for a one-electron model of the negative hydrogen ion, using the Floquet-Sturmian method. The following cases were investigated: elliptically polarised, monochromatic incident field, two-colour incident field with incommensurable frequencies, coherent super position of an incident field and its third harmonic, and superposition of a laser field and a static electric field. For elliptical polarisation, the ellipticity angle of the harmonics differ from the e
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Hort, Ondřej. "High harmonic generation with high energy femtosecond pulses." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0097/document.

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Nous présentons nos travaux sur la génération d’harmoniques élevée (HHG) avec des impulsions térawatt femtosecondes. Nous avons effectué l’HHG avec les impulsions fondamentales de haute énergie et caractérisé l’émission de XUV spatialement et spectralement de manière monocoup et nous avons observé plusieurs structures dans le champ lointain. Ces structures sont très robustes et reproductibles et ont été observés dans de nombreux types de gaz et des géométries de génération. Sans caractérisation monocoup spatiale et spectrale les structures ne sont pas visibles. Nous avons développé des simulat
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Lin, Nan. "Application of attosecond pulses to high harmonic spectroscopy of molecules." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-01064138.

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High-order Harmonic Generation (HHG) is an extreme nonlinear process that can be intuitively understood as the sequence of 3 steps: i) tunnel ionization of the target atom/molecule, creating an electronic wave packet (EWP) in the continuum, ii) acceleration of the EWP by the strong laser field and iii) recombination to the core with emission of an attosecond burst of XUV coherent light. HHG thus provides a tunable ultrashort tabletop source of XUV/Soft X-ray radiation on attosecond time scale for applications ('direct' scheme). At the same time, it encodes coherently in the XUV radiation the s
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Poirier, Michel. "Ionisation multiphotonique résonnante et génération d'harmonique trois." Paris 6, 1986. http://www.theses.fr/1986PA066538.

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L'ionisation multiphotonique résonnante d'une vapeur atomique est très sensible à la pression: même en l'absence d'effets collisionnes importants, les processus de génération d'harmonique 3 photons. Développement de plusieurs modèles pour en rendre compte: théorie du champ moyen, approximation quasi statique, approximation de faible dépeuplement. Nouvelle méthode d'analyse de l'effet Stark dynamique, appliquée a une expérience sur hg pour déterminer les paramètres de la génération d'harmoniques. En accord avec l'expérience, disposition des résonances à 4 photons à haute pression.
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Labeye, Marie. "Molecules interacting with short and intense laser pulses : simulations of correlated ultrafast dynamics." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS193/document.

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Cette thèse porte sur différents aspects des dynamiques ultra-rapides d’atomes et de molécules soumises à des impulsions laser infrarouges courtes et intenses. Nous étudions des processus fortement non linéaires tels que l’ionisation tunnel, la génération d’harmoniques d’ordre élevé ou l’ionisation au-dessus du seuil. Deux approches différentes sont utilisées. D’un côté nous mettons au point des modèles analytiques approchés qui nous permettent de construire des interprétations physiques de ces processus. D’autre part nous appuyons les interprétations données par ces modèles avec les résultats o
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El, Agroudy Naglaa, Mohammed El-Shennawy, Niko Joram, and Frank Ellinger. "Design of a 24 GHz frequency divider-by-10 in 45 nm-silicon-on-insulator as an active reflector tag." The Institute of Engineering and Technology (IET), 2017. https://tud.qucosa.de/id/qucosa%3A34013.

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The design of a 24 GHz frequency divider-by-10 for accurate indoor localisation systems is presented. It is proposed to use frequency dividers as active reflector tags in a frequency-modulated continuous wave indoor localisation system in order to reduce interferences caused by direct reflections of the interrogating signal. Since frequency dividers are subharmonic generators, this allows achieving conversion gain in the reflected signal. The frequency divider is fabricated using GLOBAL FOUNDRIES 45 nm-silicon-on-insulator technology. It consumes only 5.7 mW from a 1 V supply. It has a wide lo
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Dubois, Jonathan. "Electron dynamics for atoms driven by intense and elliptically polarized laser pulses." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0297.

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Assujettir des atomes ou des molécules à des impulsions lasers de fortes intensités done lieu à une variété de phénomènes hautement non-linéaires, tels que par exemple l'ionisation des électrons et la radiation de photons de hautes fréquences. Les distributions des vitesses des électrons ionisés ou des fréquences des photons radiés encodent des informations pertinentes sur les atomes ou les molécules ciblés à l'échelle temporelle naturelle des électrons, l'attoseconde-qui est un millionième, d'un millionième, d'un millionième d'une seconde. Comprendre la dynamique des électrons ionisés ainsi q
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Ferré, Amelie. "Etude des dynamiques moléculaires sondées par générations d'harmoniques d'ordres élevés." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0165/document.

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Grâce à ses propriétés (cohérence, brillance, durée), le rayonnement XUV femtoseconde produit par génération d'harmoniques d'ordre élevé est utilisé comme un processus de sonde pour l'étude de dynamiques atomiques et moléculaires, avec une bonne résolution spatiale et temporelle (femtoseconde voire attoseconde). Ainsi, des dynamiques rotationnelles ont été résolues sur des petits systèmes moléculaires (N2, CO2). Les travaux de cette thèse ont consisté à étendre les méthodes de spectroscopie harmoniques et les appliquer à des systèmes moléculaires complexes d'intérêt femtochimique. Parmi elles,
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Zapata, Abellán Felipe. "Electron dynamics induced by single and multiphoton processes in atoms and molecules." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS431.

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Cette thèse contribue aux développements de méthodes numériques utilisées pour reproduire la dynamique électronique induite par des processus à un et plusieurs photons dans les atomes et molécules. Dans le domaine perturbatif, la photoexcitation et la photoionisation ont été étudiées à l'aide de la théorie de la fonctionnelle de la densité à séparation de portée, dans le but de prendre en compte les effets d'interaction électron-électron. De plus, dans le domaine non-perturbatif, les spectres au-delà du seuil d'ionisation et les spectres de génération d'harmoniques d'ordres élevés ont été simu
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Conference papers on the topic "Harmonic generation; Ionisation suppression"

1

Jeys, T. H. "Suppression of Laser Spiking by Intracavity Second-Harmonic Generation." In Advanced Solid State Lasers. OSA, 1989. http://dx.doi.org/10.1364/assl.1989.hh7.

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Sun, Xiaofeng, Jian Zeng, and Zhe Chen. "APF for harmonic voltage resonance suppression in distribution system." In 2010 2nd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG). IEEE, 2010. http://dx.doi.org/10.1109/pedg.2010.5545822.

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Fritzin, Jonas, Behzad Mesgarzadeh, and Atila Alvandpour. "A Class-D stage with harmonic suppression and DLL-based phase generation." In 2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2012. http://dx.doi.org/10.1109/mwscas.2012.6291953.

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Chen, Huali, and Yunlian Sun. "Harmonic Suppression of Grid-Connected Distributed Generation Using Multi-Objective Genetic Algorithm." In 2009 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2009. http://dx.doi.org/10.1109/appeec.2009.4918401.

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Shi, Jiyin, Risheng Fang, Wujie Chao, Bidan Qiu, and Sheng Shi. "Generation Mechanism and Suppression Strategy of Background Harmonic Current at MMC AC Side." In 2018 IEEE 4th Information Technology and Mechatronics Engineering Conference (ITOEC). IEEE, 2018. http://dx.doi.org/10.1109/itoec.2018.8740579.

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Shou, Ting, Huidong Wang, Tieming Zhu, et al. "Harmonic current suppression for three phase PV generation system under unbalanced grid voltage." In 2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2013. http://dx.doi.org/10.1109/appeec.2013.6837219.

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Czaplicki, R., M. Zdanowicz, K. Koskinen, et al. "Suppression of multipole effects in second-harmonic generation from L-shaped gold nanoparticles." In 12th European Quantum Electronics Conference CLEO EUROPE/EQEC. IEEE, 2011. http://dx.doi.org/10.1109/cleoe.2011.5943480.

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Huali Chen, Yunlian Sun, and Wei Chen. "Harmonic suppression of grid-connected distributed generation based on novel Hybrid power filter." In 2009 4th IEEE Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2009. http://dx.doi.org/10.1109/iciea.2009.5138742.

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Ziyu Wang, Gengyin Li, Jing Liu, Jian Wang, and Jinhao Wang. "Harmonic suppression in electric traction system based on a single-phase hybrid active filter." In International Conference on Sustainable Power Generation and Supply (SUPERGEN 2012). Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/cp.2012.1800.

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Yao, Jiaxuan, Weiwei Zhu, Linghui Meng, Hongjian Lin, Zeliang Shu, and Liang Liu. "Unbalanced Harmonic Suppression of Three-Level Active Power Filter with Optimal Hybrid Control." In 2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG). IEEE, 2019. http://dx.doi.org/10.1109/pedg.2019.8807494.

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