01029nam0 2200289 450 00001959020090212123419.020081119d1978----km-y0itay50------baitaITy-------001yy<<Le >>geometrie non euclidee e i fondamenti della geometriadi Evandro Agazzi e Dario PalladinoMilanoEdizioni scientifiche e tecniche Mondadori1978319 p.21 cmBiblioteca della EST2001Biblioteca della EST<<Le >>geometrie non euclidee e i fondamenti della geometria33803Geometria non euclidea516.918Geometrie non euclideeAgazzi,Evandro9620Palladino,Dario45082ITUNIPARTHENOPE20081119RICAUNIMARC000019590M 516/4M 355DSA2008S 516/25S A, 898DSA2009Geometrie non euclidee e i fondamenti della geometria33803UNIPARTHENOPE01419oam 2200421 450 991071158760332120181025111252.0(CKB)5470000002484172(OCoLC)954173048(EXLCZ)99547000000248417220160728d1905 ua 0engurn||||||||||txtrdacontentcrdamediacrrdacarrierField measurements of the rate of movement of underground waters /by Charles S. SlichterWashington, D.C. :Department of the Interior, United States Geological Survey,1905.Washington, D.C. :Government Printing Office.1 online resource (141 unnumbered pages) illustrationsWater-supply and irrigation paper ;no. 140Series O-Underground waters ;. 43Includes bibliographical references and index.GroundwaterGroundwaterfastGroundwater.Groundwater.Slichter Sumner H(Sumner Huber),1892-1959,121369Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910711587603321Field measurements of the rate of movement of underground waters3525917UNINA05331nam 2200637Ia 450 991083004040332120230617002933.01-280-24285-X97866102428560-470-29707-70-470-85621-10-470-85620-3(CKB)1000000000356090(EBL)241167(SSID)ssj0000265429(PQKBManifestationID)11218029(PQKBTitleCode)TC0000265429(PQKBWorkID)10294929(PQKB)10459393(MiAaPQ)EBC241167(OCoLC)85820694(EXLCZ)99100000000035609020031002d2005 fy 0engur|n|---|||||txtccrUnlocking dynamical diversity[electronic resource] optical feedback effects on semiconductor lasers /edited by Deborah M. Kane, K. Alan ShoreChichester John Wileyc20051 online resource (357 p.)Description based upon print version of record.0-470-85619-X Includes bibliographical references and index.UNLOCKING DYNAMICAL DIVERSITY; Contents; List of Contributors; Preface; Acknowledgements; 1 Introduction; 1.1 Semiconductor Laser Basics; 1.1.1 Semiconductor Laser Materials and Output Wavelengths; 1.1.2 Semiconductor Laser Structures; 1.1.3 Semiconductor Laser Gain and Output Power versus Injection Current; 1.1.4 Semiconductor Laser Relaxation Oscillations, Noise, Modulation and Linewidth Enhancement Factor; 1.2 Nonlinear Dynamical Systems; 1.3 Semiconductor Lasers with Optical Feedback; 1.4 Landmark Results: Theory and Experiment; 1.5 Overview of Feedback Response: Regimes I-V1.6 Outline of ApplicationsReferences; 2 Theoretical Analysis; 2.1 Introduction; 2.2 Basic Model: Single Mode Lasers with Weak Optical Feedback; 2.3 Steady State Analysis of the Lang-Kobayashi Equations; 2.4 Multimode Iterative Analysis of the Dynamics of Laser Diodes Subject to Optical Feedback; 2.4.1 Dynamics of MultiMode Laser Diodes; 2.4.2 Steady State Solutions; 2.4.3 Comparison with Lang-Kobayashi Rate Equations; 2.5 Cavity Length Effects; 2.5.1 Long External Cavities; 2.5.2 Short External Cavities; 2.6 Coupled Cavity Analysis; 2.6.1 Theory; 2.6.2 Comparison with LK Analysis2.6.3 Typical Results2.7 Conclusion; References; 3 Generalized Optical Feedback: Theory; 3.1 Varieties of Optical Feedback; 3.2 Compound-Cavity Analysis: Validity of Lang-Kobayashi Approach; 3.3 Filtered Optical Feedback; 3.3.1 External Cavity Modes; 3.3.2 Dynamics; 3.4 Phase-Conjugate Feedback; 3.4.1 Steady State; 3.4.2 Results of Stability Analysis for the Steady State; 3.4.3 High-Frequency Oscillations; 3.5 Conclusion; Acknowledgements; Note; References; 4 Experimental Observations; 4.1 Introduction; 4.2 Experimental Apparatus; 4.3 Extremely Weak Feedback Effects - Regime I4.4 Very Weak Feedback Effects - Regime II4.5 Weak Feedback Effects - Regime III-IV; 4.6 Moderate Feedback Effects - Low Frequency Fluctuations; 4.7 Short Cavity Regime; 4.8 Double-Cavity Systems; 4.9 Multimode Effects; 4.10 Control; 4.11 Feedback and Modulation; 4.12 Phase Conjugate Feedback; 4.13 Conclusion; References; 5 Bifurcation Analysis of Lasers with Delay; 5.1 Introduction; 5.2 Bifurcation Theory of DDEs; 5.2.1 The Phase Space of a DDE; 5.2.2 Local Bifurcations of Steady States; 5.2.3 Local Bifurcations of Periodic Orbits; 5.2.4 Unstable Manifolds and Global Bifurcations5.3 Numerical Methods5.3.1 Simulation by Direct Numerical Integration; 5.3.2 Numerical Continuation; 5.3.3 Computation of 1D Unstable Manifolds; 5.4 Bifurcations in the COF Laser; 5.4.1 Symmetry of the COF Laser Equation; 5.4.2 External Cavity Modes; 5.4.3 The Characteristic Equation of an ECM; 5.4.4 Continuation Near Connecting Bridges; 5.4.5 Global Bifurcations of ECMs; 5.5 Bifurcations in the PCF Laser; 5.5.1 Symmetry of the PCF Laser Equation; 5.5.2 Bifurcation Diagram Near the Locking Region; 5.5.3 Bifurcations of ECMs; 5.5.4 Break-up of a Torus and Crisis Bifurcation; 5.6 ConclusionAcknowledgementsApplications of semiconductor lasers with optical feedback systems are driving rapid developments in theoretical and experimental research. The very broad wavelength-gain-bandwidth of semiconductor lasers combined with frequency-filtered, strong optical feedback create the tunable, single frequency laser systems utilised in telecommunications, environmental sensing, measurement and control. Those with weak to moderate optical feedback lead to the chaotic semiconductor lasers of private communication. This resource illustrates the diversity of dynamic laser states and the technological applicatSemiconductor lasersOptical communicationsSemiconductor lasers.Optical communications.621.366621.3661Kane Deborah M1623323Shore K. Alan1680439MiAaPQMiAaPQMiAaPQBOOK9910830040403321Unlocking dynamical diversity4049139UNINA