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2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)最新文献

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Attosecond Electron Localization and Screening Dynamics in Metals 金属中的阿秒电子定位与筛选动力学
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8872968
M. Volkov, Shunsuke A. Sato, F. Schlaepfer, L. Kasmi, N. Hartmann, M. Lucchini, L. Gallmann, Á. Rubio, U. Keller
{"title":"Attosecond Electron Localization and Screening Dynamics in Metals","authors":"M. Volkov, Shunsuke A. Sato, F. Schlaepfer, L. Kasmi, N. Hartmann, M. Lucchini, L. Gallmann, Á. Rubio, U. Keller","doi":"10.1109/CLEOE-EQEC.2019.8872968","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872968","url":null,"abstract":"A high degree of electron localization on the d-orbitals of transition metals and their compounds provides a lever to efficiently control their properties with light. For example, light absorption in VO2 may result in an ultrafast electronic phase transition from a dielectric into a metallic state [1]. The essential timescale of electronic phase transitions is connected to the screening dynamics, which typically belongs to the attosecond domain. It is followed by femtosecond electron-electron thermalization, which may blur the initial imprints of screening-induced charge re-distribution. Here we show that the properties of transition metals could in principle be manipulated much faster than the electron thermalization timescale and even faster than the optical cycle.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"20 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83471934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light Transport and Vortex Formation in All Solid Band Gap Fibres 全固体带隙光纤中的光输运和涡旋形成
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8872548
A. Pryamikov, G. Alagashev, S. Turitsyn
{"title":"Light Transport and Vortex Formation in All Solid Band Gap Fibres","authors":"A. Pryamikov, G. Alagashev, S. Turitsyn","doi":"10.1109/CLEOE-EQEC.2019.8872548","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872548","url":null,"abstract":"Study of optical vortices (OV) is a growing area of research bringing together advanced theoretical and mathematical concepts and emerging technologies [1]. The necessary condition of OV existence is zero amplitude on a certain line representing the vortex axis. The zero — amplitude line may coincide with the axis of light beam or have more complicated shape [2]. It is known that the most important feature of the optical vortex formation is the rotation of the Poynting vector (energy rotation) around the phase dislocation (the OV core) [1]. It should also be noted that when the zero amplitude line has the shape of a ring the phases of the plane wavefront inside the ring and outside it differ b y π [2]. In this work, we examine the linear OVs that occur in the cladding of all-solid-band-gap fibres (ASBGFs) [3]. In the case of ASBGFs the formation of OVs can have strong impact on localization of the core modes. We demonstrate that the vortex formation in ASBGFs is determined by the location of the zero — amplitude lines in the cladding elements.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"54 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79567850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tunable Self-Pulsations in a Quantum-Dot External-Cavity Laser Emitting across the Excited State 跨激发态发射量子点外腔激光的可调谐自脉冲
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8871639
S. White, M. Cataluna
{"title":"Tunable Self-Pulsations in a Quantum-Dot External-Cavity Laser Emitting across the Excited State","authors":"S. White, M. Cataluna","doi":"10.1109/CLEOE-EQEC.2019.8871639","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871639","url":null,"abstract":"Self-pulsations have previously been observed in single-section quantum-dot (QD) lasers at low MHz frequencies1 and higher GHz frequencies2. In this contribution, we present the first demonstration of SP involving laser emission solely in the excited-state transition. This was achieved with a single-section amplifier at the core of the laser, thus in the absence of a separate saturable absorber section. SPs had a frequency of ∼3.8 GHz, tunable via current variation. The use of an external cavity and the tunability afforded by this setup also allowed spectrally tunable SPs between 1160 and 1196 nm, which enabled further investigation of its dynamics (including bistability).","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"25 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78822944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low RF-Power Injection-Locking and Beatnote Control of Terahertz Quantum Cascade Laser Frequency Combs 太赫兹量子级联激光频率梳的低射频功率注入锁定和节拍控制
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8873185
P. Taeschler, A. Forrer, D. Stark, T. Olariu, M. Beck, J. Faist, G. Scalari
{"title":"Low RF-Power Injection-Locking and Beatnote Control of Terahertz Quantum Cascade Laser Frequency Combs","authors":"P. Taeschler, A. Forrer, D. Stark, T. Olariu, M. Beck, J. Faist, G. Scalari","doi":"10.1109/CLEOE-EQEC.2019.8873185","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873185","url":null,"abstract":"Quantum Cascade lasers (QCLs), relying on intersubband transitions in semiconductor quantum well structures, show very short carrier lifetimes of the order of picoseconds [1]. As a consequence, relaxation oscillations remain over-damped up to modulation frequencies of several tens of GHz [2], enabling efficient amplitude modulation of the gain medium in this frequency range. These properties make QCLs ideally suited for RF-injection-locking. We demonstrate that the round-trip frequency of THz QCLs, as observed from the beatnote, can be injection-locked by RF-modulating the bias current. Within a certain locking range we observe mutual phase-locking of approximately 20 longitudinal modes for significantly lower RF-powers than in previous studies [3]. Apart from injection-locking, we demonstrate beatnote control by means of an external cavity.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"25 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78985418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metasurfaces Can Sense Spatial Coherence of Light 超表面可以感知光的空间相干性
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8873295
T. Frank, O. Buchnev, T. Cookson, M. Kaczmarek, P. Lagoudakis, V. Fedotov
{"title":"Metasurfaces Can Sense Spatial Coherence of Light","authors":"T. Frank, O. Buchnev, T. Cookson, M. Kaczmarek, P. Lagoudakis, V. Fedotov","doi":"10.1109/CLEOE-EQEC.2019.8873295","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873295","url":null,"abstract":"We report on a discovery that homogeneous metallic non-diffracting metasurfaces of a certain type respond differently to spatially coherent and incoherent light, enabling robust speckle-free discrimination between different degrees of coherence. The effect has no direct analogue in natural optical materials and may find applications in compact metadevices enhancing imaging, vision, detection, communication and metrology.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"324 ","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91464772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kapitza Pendulum Effect with Overclocked Raman Comb Solitons in a Microring Resonator 微环谐振腔中超频拉曼梳状孤子的Kapitza钟摆效应
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8872585
D. Puzyrev, N. Alexeeva, I. V. Barashenkov, B. Malomed, C. Milián, D. Skryabin
{"title":"Kapitza Pendulum Effect with Overclocked Raman Comb Solitons in a Microring Resonator","authors":"D. Puzyrev, N. Alexeeva, I. V. Barashenkov, B. Malomed, C. Milián, D. Skryabin","doi":"10.1109/CLEOE-EQEC.2019.8872585","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872585","url":null,"abstract":"Frequency comb generation in microring resonators with Kerr nonlinearity has been intensely studied in the last decade. These studies have demonstrated a plethora of novel solitonic effects with immediate applications in the precision measurements and optical signal processing [1]. Using nonlinear effects other than Kerr nonlinearity for comb generation is an active research area. In particular, Raman nonlinearity is ubiquitous in nature and its impact on Kerr frequency combs has attracted significant recent attention [1,2].","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"17 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79199880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectral Interleaving with Quantum Cascade Laser Frequency Combs 量子级联激光频率梳的频谱交织
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8873290
M. Gianella, Akshay Nataraj, B. Tuzson, F. Kapsalidis, S. Schilt, T. Südmeyer, J. Faist, L. Emmenegger
{"title":"Spectral Interleaving with Quantum Cascade Laser Frequency Combs","authors":"M. Gianella, Akshay Nataraj, B. Tuzson, F. Kapsalidis, S. Schilt, T. Südmeyer, J. Faist, L. Emmenegger","doi":"10.1109/CLEOE-EQEC.2019.8873290","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873290","url":null,"abstract":"Quantum cascade laser (QCL) based frequency combs are mid-infrared sources capable of producing hundreds of mW of optical power distributed across several hundred comb lines spanning tens of cm−1. In the dual comb (or multi-heterodyne) configuration, two nearly identical frequency combs with slightly different comb spacing are used as an interrogating and local oscillator comb, respectively, to probe the absorption or refractive index of a sample [1]. The multi-heterodyne beat note signal produced by overlapping the two beams on a fast photodetector allows simultaneous access to all optical frequencies of the interrogating comb, enabling fast (sub-μs) acquisition of time-resolved absorption and/or dispersion spectra [2]. The typical length of QCL devices of ca. 5 mm leads to comb spacings of the order of 10 GHz (0.33 cm−1). While suitable for spectroscopy in the condensed phase, gas-phase spectroscopy requires much finer spectral sampling (e.g. <10 MHz for Doppler-broadened transitions of small molecules). This can be achieved by spectral interleaving, i.e. by the continuous or step-wise shifting of the spectrum of the interrogating comb.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"30 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80956218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear Optics of Multiferroic Materials 多铁材料的非线性光学
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8872480
M. Fiebig
{"title":"Nonlinear Optics of Multiferroic Materials","authors":"M. Fiebig","doi":"10.1109/CLEOE-EQEC.2019.8872480","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8872480","url":null,"abstract":"Multiferroics, that is, materials with a coexistence of long-range magnetic and electric order have been attracting tremendous interest because of pronounced coupling effects between magnetic and electric properties that may be the basis for novel devices in which a magnetization is controlled by an electric voltage rather than by energy-intensive electric-current-driven magnetic fields. For monitoring as well as controlling the magnetoelectric coupling, it is essential to have simultaneous access to the magnetic and electric phase of a multiferroic. Only then, the spatial relation between the magnetic and electric domain structures and their response to external perturbations like applied magnetic or electric fields can be studied. Nonlinear optics is particularly well suited for this purpose.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"4 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78691489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cold Damping of a Levitated Nanoparticle 悬浮纳米粒子的冷阻尼
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8871848
F. Tebbenjohanns, M. Frimmer, A. Militaru, V. Jain, L. Novotný
{"title":"Cold Damping of a Levitated Nanoparticle","authors":"F. Tebbenjohanns, M. Frimmer, A. Militaru, V. Jain, L. Novotný","doi":"10.1109/CLEOE-EQEC.2019.8871848","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8871848","url":null,"abstract":"The interaction of light and matter gives rise to optical forces. A particularly impressive example is optical trapping of dielectric particles in strongly focused laser fields using the optical gradient force. This force pulls the particle to the region of largest field intensity. As a result, for small oscillation amplitudes around the trap center, the particle's center-of-mass motion can be regarded as a harmonic oscillator.","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"25 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81746154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multiscale Dissipative Structures Driven by Modulation and Polarization Instabilities 调制和极化不稳定性驱动的多尺度耗散结构
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) Pub Date : 2019-10-17 DOI: 10.1109/CLEOE-EQEC.2019.8873220
H. Kbashi, Marina Zajnulina, Amos M. Garcia, S. Sergeyev
{"title":"Multiscale Dissipative Structures Driven by Modulation and Polarization Instabilities","authors":"H. Kbashi, Marina Zajnulina, Amos M. Garcia, S. Sergeyev","doi":"10.1109/CLEOE-EQEC.2019.8873220","DOIUrl":"https://doi.org/10.1109/CLEOE-EQEC.2019.8873220","url":null,"abstract":"The modulation and multimode instabilities (MI and MMI) are mechanisms driving spontaneous spatial and temporal patterns (STP) formation including rogue waves (RWs) in a vast number of nonlinear systems ranging from biology to the laser physics [1–4]. Using Erbium-doped fiber laser (EDFL) mode-locked with carbon nanotubes, here for the first time we demonstrate experimentally the STP formation in the form of Akhmediev breathers (ABs), Peregrine soliton (PS), bi-periodic (second-order) Akhmediev breathers (BPAB), and chaotic solitons (CSs) driven by modulation and a new type of multimode instability — polarization instability called vector resonance multimode instability (VRMMI) [2, 3]. The output power statistics of STPs reveal their connection with the dark and bright rogue waves (DRWs and BRWs).","PeriodicalId":6714,"journal":{"name":"2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)","volume":"119 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87382383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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