Highlights of Laser Science (DLS) Talks @ APS 2021 March Meeting
American Physics Society (APS) March meeting is one of the largest physics meetings in the world. In 2021, the meeting will be held online due to COVID-19.
To help the community quickly catch up on the work to be presented in this meeting, Paper Digest Team processed all talk abstracts, and generated one highlight sentence (typically the main topic) for each. Readers are encouraged to read these machine generated highlights / summaries to quickly get the main idea of each talk. This article is on the talks related to Laser Science (DLS).
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TABLE : Laser Science (DLS)
| Title | Authors | Highlight | Session | |
|---|---|---|---|---|
| 1 | Ultrafast carrier dynamics and photoconductivity in gated graphene probed by THz pump-THz probe spectroscopy | Vaswani, Chirag; Mudiyanselage, Dinusha; Huang, Chuankun; Luo, Liang; Fan, Xiaodong; Zeng, Changgan; Wang, JIGANG | Here we report on carrier dynamics in a gate-tunable graphene device using THz pump-THz probe spectroscopy. | Session 1: **Focus Session Name Pending ** |
| 2 | Quantum to classical crossover of Floquet engineering in correlated quantum systems | Sentef, Michael; Li, Jiajun; Künzel, Fabian; Eckstein, Martin | Here we discuss how these two extreme limits are interpolated by a cavitydriven to the excited states. | Session 1: **Focus Session Name Pending ** |
| 3 | Rationally designing a crystal structure with light to control magnetism | Disa, Ankit; Fechner, Michael; Nova, Tobia; Liu, Biaolong; Först, Michael; Prabhakaran, Dharmalingam; Radaelli, Paolo G.; Cavalleri, Andrea | Here, we show that a desired non-equilibrium crystal structure can be engineered with light to achieve macroscopic behavior beyond that achievable statically. | Session 1: **Focus Session Name Pending ** |
| 4 | Dynamical phase transition in an optically driven 2D Heisenberg antiferromagnet | Kalthoff, Mona; Kennes, Dante; Millis, Andrew; Sentef, Michael | Here we investigate the effects of magnon-magnon interactions using an interacting spin-wave theory in a large spin expansion and a Boltzmann formalism. | Session 1: **Focus Session Name Pending ** |
| 5 | Photoinduced phase switching in 1T’-TaTe2 visualized by relativistic ultrafast electron diffraction* | Siddiqui, Khalid; Durham, Daniel; Cropp, Frederick; Rajpurohit, Sangeeta; Ophus, Colin; Zhu, Yanglin; Carlström, Johan; Stavrakas, Camille; Mao, Zhiqiang; Raja, Archana; Musumeci, Pietro; Tan, Liang; Minor, Andrew; Kaindl, Robert; Filippetto, Daniele | In this contribution, we discuss the observed dynamics in light of dynamical diffraction simulations and DFT and provide an outlook for future studies of this intriguing system. | Session 1: **Focus Session Name Pending ** |
| 6 | Anisotropic Response of Type-II Weyl Semimetal TaIrTe4 under Ultrafast Photoexcitation | Zhuo, Xiao; Lai, Jiawei; yu, peng; Yu, Ze; Ma, Junchao; Lu, Wei; Liu, Miao; Liu, Zheng; Sun, Dong | We perform angle-resolved transient reflection spectroscopy to study the dynamical evolution of anisotropic properties of Type-II Weyl semimetal TaIrTe 4 under photo excitation. | Session 1: **Focus Session Name Pending ** |
| 7 | Laser tuning the electronic and structural order and electron-phonon couplings in 1T-TaSe2 | Shi, Xun; You, Wenjing; Zhang, Yingchao; Guan, Mengxue; Tao, Zhensheng; Zhong, Yigui; Kafle, Tika; Wu, Xianxin; Thomale, Ronny; Oppeneer, Peter; Ding, Hong; Bauer, Michael; Rossnagel, Kai; Meng, Sheng; Kapteyn, Henry; Murnane, Margaret | In this work, we use time- and angle-resolved photoemission spectroscopy to study the electronic structure and electron-phonon couplings throughout a newly-uncovered laser-enriched phase diagram in the charge density wave (CDW) material 1 T-TaSe 2. | Session 1: **Focus Session Name Pending ** |
| 8 | Photoinduced lattice instability in SnSe | Huang, Yijing; Teitelbaum, Samuel; Yang, Shan; de la Pena, Gilberto; Sato, Takahiro; Chollet, Matthieu; Niedziela, Jennifer; Bansal, Dipanshu; Delaire, Olivier; Trigo, Mariano; Reis, David | We demonstrate via time-resolved x-ray diffraction that SnSe has a photo-induced lattice instability associated with an orthorhombic distortion of the rock-salt structure. | Session 1: **Focus Session Name Pending ** |
| 9 | Trillion Frames per second Single Shot Imaging with Angular Encoding | Sheinman, Matthew; Erramilli, Shyamsunder; Mertz, Jerome | Here, we present a method for acquiring a sequence of time-resolved images in a single shot, termed Single-Shot Non-Synchronous Array Photography (SNAP). | Session 1: **Focus Session Name Pending ** |
| 10 | Tracking topological signatures by time- and angle-resolved photoemission spectroscopy | Schueler, Michael; De Giovannini, Umberto; Huebener, Hannes; Rubio, Angel; Sentef, Michael; Devereaux, Thomas; Werner, Philipp | We will discuss how topological properties are manifest in circular dichroism in ARPES. | Session 1: **Focus Session Name Pending ** |
| 11 | Plasmonic nano-focused spectroscopy and imaging: from few-fs dynamics to a new regime of nonlinear nano-optics | Luo, Wenjin; Jiang, Tao; Kravtsov, Vasily; Tokman, Mikhail; Belyaninand, Alexey; Raschke, Markus | We will discuss how spatial nano-confinement and near-field momenta provide new pathways for enhancing nonlinear frequency conversion where, e.g., plasmonic gradient-field effects amplify dipole-forbidden nonlinear responses. | Session 1: **Focus Session Name Pending ** |
| 12 | Theory of nonlinear optical responses in Kitaev spin liquids | Kanega, Minoru; Ikeda, Tatsuhiko; Sato, Masahiro | Motivated by these backgrounds, we theoretically study THz-laser responses of the QSL phase in the Kitaev model which is a frustrated spin-1/2 system on honeycomb lattice with three-type Ising interactions. | Session 1: **Focus Session Name Pending ** |
| 13 | TMDC quantum dots in ultrashort optical pulse | Hossaini, Sayed Jaber | We theoretically study transition metal decalcogenide quantum dot high harmonic generation in the field of ultrashort optical pulse. | Session 1: **Focus Session Name Pending ** |
| 14 | Ultrafast control of magnetic interactions via light-driven phonons | Afanasiev, Dmytro; Hortensius, Jorrit; Ivanov, Boris; Sasani, Alireza; Bousquet, Eric; Blanter, Yaroslav; Mikhaylovskiy, Rostislav; Kimel, Alexey; Caviglia, Andrea | [1] In this work we show that light-driven lattice vibrations can be utilized to coherently manipulate macroscopic magnetic states. | Session 1: **Focus Session Name Pending ** |
| 15 | Time-resolved low energy electrodynamics of Ta2NiSe5 : search for optical signatures of the excitonic insulator phase | Haque, Sheikh Rubaiat Ul; Zhu, Junbo; Zhang, Gufeng; Ali, Mustafa; Kaj, Kelson; Zhang, Yuan; Checkelsky, Joseph; Averitt, Richard | We report the low energy dynamics of Ta 2NiSe 5, a candidate EI material with T c = 328 K. | Session 1: **Focus Session Name Pending ** |
| 16 | Model and Design of Incoherently and Geometrically Combined Laser Beams for Optimum Overlap and Power | Bouchalkha, Abdellatif; Al Ameri, Jawaher; Coronel, Juan; Galvis, Juan; Matras, Guillaume; Kasmi, Chaouki | In this study, we present a model for incoherently combining three laser beams using a system of two optical lenses to allow for longer overlap distance between the beams and minimum power loss. | Session 2: Nonequilibrium Laser Science |
| 17 | Modeling spontaneous and stimulated emission in GeSn waveguides on silicon | Mathews, Jay; Li, Zairui; Agha, Imad | In this work, we analyze the experimental results of optical emission from n-type GeSn (5-6% Sn) waveguides under optical pumping at room temperature. | Session 2: Nonequilibrium Laser Science |
| 18 | Floquet-Driven Indirect Exchange Interaction in Magnetically Doped Graphene | Ke, Modi; Tse, Wang Kong | We investigate the non-equilibrium indirect exchange interaction in irradiated, magnetically doped two-dimensional election systems. | Session 2: Nonequilibrium Laser Science |
| 19 | Screening and Non-Equilibrium Kohn Anomalies in Floquet-Driven Two-Dimensional Electron Systems | Asmar, Mahmoud; Tse, Wang Kong | We present a theory for the time-averaged polarization function of a monochromatically irradiated two-dimensional electron gas. | Session 2: Nonequilibrium Laser Science |
| 20 | Tristable Phase of Parametric Three-Photon Down-Conversion | Miri, Mohammad-Ali | An analytically solvable second-order oscillator model is derived for the signal. | Session 2: Nonequilibrium Laser Science |
| 21 | Revisiting Photoemission via Transient Work Function Gating | Carbajo, Sergio | We offer a new perspective to study the interplay between intrinsic emittance and quantum efficiency (QE), and the challenges associated with tailoring the phase-space of electrons. | Session 2: Nonequilibrium Laser Science |
| 22 | Efficient Longitudinally-shaped Upconversion for Photoinjector-based Particle Accelerators | Lemons, Randy; NEVEU, Nicole; Duris, Joe; Marinelli, Agostino; Durfee, Charles; Carbajo, Sergio | We present a novel method for the simultaneous upconversion and shaping ultraviolet pulses via sum frequency generation. | Session 2: Nonequilibrium Laser Science |
| 23 | Strong Coupling in 2D materials with gold nanoparticles | NAZARI, HANA; Hassan, Mumtaz; Ambardar, Sharad; Voronine, Dmitri | Here we used scanning probe microscopic techniques and optical spectroscopy to observe strong coupling in hybrid systems using gold nano-particles (AuNPs) in 2D materials such as MoS2 and WS2 nano-layer materials and lateral heterostructures. | Session 2: Nonequilibrium Laser Science |
| 24 | Tunable topological charge vortex microlaser with ultrafast controllability | Zhang, Zhifeng; Qiao, Xingdu; Midya, Bikashkali; Liu, Kevin; Zhao, Haoqi; Sun, Jingbo; Wu, Tianwei; Pires, Danilo; Liu, Wenjing; Gao, Zihe; Agarwal, Ritesh; Jornet, Josep; Longhi, Stefano; Litchinitser, Natalia; Feng, Liang | By harnessing the properties of total angular momentum conservation, spin-orbit interaction, optically controlled non-Hermitian symmetry breaking and fast transient optical gain dynamics, we demonstrate an on-chip integrated (fractional) OAM-tunable vortex microlaser, providing ultrafast reconfigurable chiral light emission with desired topological charge at a single telecom wavelength. | Session 2: Nonequilibrium Laser Science |
| 25 | Anomalous photocarrier dynamics in free-standing carbon nanotubes driven by strong terahertz pulses | Lee, Byounghwak; Mousavian, Ali; Bradley, Alden; Lee, Yun-Shik | We demonstrate that free-standing multi-walled CNTs exhibit extraordinary nonlinear THz responses when the CNTs are optically excited. | Session 2: Nonequilibrium Laser Science |
| 26 | The order-disorder phase transition in VO2 revealed by an x-ray free electron laser | Trigo, Mariano | I will present XFEL results on the ultrafast monoclinic (M 1 ) to rutile (R) transition of VO 2 . | Session 3: Ultrafast Dynamics and Control of Quantum Materials |
| 27 | Femtosecond Covariance Spectroscopy to Control Multimode Quantum Correlations | Fausti, Daniele | As a proof of principle, we have successfully applied such approach to the study of Raman-active vibrational modes excited through Impulsive Stimulated Raman Scattering (ISRS) in crystalline quartz. | Session 3: Ultrafast Dynamics and Control of Quantum Materials |
| 28 | Out-of-equilibrium phase competition mediated by photoinduced fluctuations | Zong, Alfred | In this talk, I will discuss a model charge-density-wave (CDW) family with two competing modulations, out of which only the dominant one appears in equilibrium. | Session 3: Ultrafast Dynamics and Control of Quantum Materials |
| 29 | Local Symmetry Breaking and Spin Momentum Locking in Cuprates Superconductors | Lanzara, Alessandra | In this talk I will present the effect of local breaking of inversion symmetry in cuprates superconductors and show that this leads to unusual phenomena and the appearance of a non-zero spin polarization with a well-defined spin momentum locking, that is strictly linked to the Fermi surface topology. | Session 3: Ultrafast Dynamics and Control of Quantum Materials |
| 30 | Quantum Beats by Lightwave Acceleration of Broken-Symmetry Supercurrents | Wang, JIGANG | In this talk, I will discuss our recent progress towards applying this new tuning knob, enabled by using single- and few-cycle THz pulses, to reveal some distinguishing features of quantum systems: Anderson pseudo-spin precessions and higher harmonics forbidden by equilibrium symmetry, hidden emergent phases that are difficult to be accessed by other tuning methods, Higgs modes in unconventional superconductors. | Session 3: Ultrafast Dynamics and Control of Quantum Materials |
| 31 | Fast phase cycling in non-collinear optical two-dimensional coherent spectroscopy | Munoz, Maria; Medina, Adam; Autry, Travis; Moody, Galan; Siemens, Mark; Bristow, Alan; Cundiff, Steven; Li, Hebin | To eliminate this background, we developed a fast phase-cycling scheme in a non-collinear optical 2DCS by using liquid crystal phase retarders to modulate the phases of two excitation pulses [1]. | Session 4: Ultrafast Laser Spectroscopy |
| 32 | Terahertz investigation of strong coupling between metamaterials and superconducting Josephson plasmons in La2-xSrxCuO4 | Kaj, Kelson; Hammock, Ian; Chen, Chunxu; Zhao, Xiaoguang; Cremin, Kevin; Fogler, Michael; Basov, Dmitri; Zhang, Xin; Averitt, Richard | We investigate the coupling between an array of metamaterial resonators and the Josephson Plasma Resonance (JPR) in superconducting La 2-xSr xCuO 4 (LSCO) using terahertz (THz) time domain spectroscopy. | Session 4: Ultrafast Laser Spectroscopy |
| 33 | Calculation of Photon Echoes for Pr:YSO Quantum Memory | Levine, Zachary | Calculation of Photon Echoes for Pr:YSO Quantum Memory | Session 4: Ultrafast Laser Spectroscopy |
| 34 | Terahertz Magnetospectroscopy Evidence of Spin-Magnon Interactions in the Low-Temperature Phase Transition of Erbium Orthoferrites | Marquez Peraca, Nicolas; Bamba, Motoaki; Hayashida, Kenji; Li, Xinwei; Ma, Xiaoxuan; Makihara, Takuma; Fallas Padilla, Diego; Huang, Chien-Lung; Morosan, Emilia; Pu, Han; Cao, Shixun; Kono, Junichiro | In this work, we studied Er 1-xY xFeO 3 as a function of temperature, magnetic field, and Y composition ( x) through terahertz time-domain magnetospectroscopy. | Session 4: Ultrafast Laser Spectroscopy |
| 35 | Ultrafast electron dynamics in rutile TiO2(110) using multi-photon photoemission spectroscopy | James, Namitha; Petek, Hrvoje | We extended our study to multiphoton photoemission(mPP) spectroscopy in the near-IR-VIS spectral region. | Session 4: Ultrafast Laser Spectroscopy |
| 36 | Tuning time and energy resolutions in time- and angle-resolved photoemission spectroscopy | Gauthier, Alexandre; Sobota, Jonathan; Gauthier, Nicolas; Xu, Kejun; Pfau, Heike; Rotundu, Costel; Shen, Zhixun; Kirchmann, Patrick | We demonstrate tunable time and energy resolutions by adjusting the thickness of nonlinear BaB 2O 4 crystals generating 6 eV pulses from a 1.5 eV fundamental. | Session 4: Ultrafast Laser Spectroscopy |
| 37 | Non-Equilibrium Carrier Dynamics in Bulk Chalcopyrite Crystals Studied with Time-Resolved Terahertz Spectroscopy | Sooriyagoda, Rishmali; Powers, Jack; Piyathilaka, Herath; Zawilski, Kevin; Schunemann, Peter; Bristow, Alan | In this study, time-resolved terahertz spectroscopy (TRTS) is employed to investigate the ultrafast carrier dynamics and AC photoconductivity of cadmium germanium diphosphide (CdGeP 2), zinc germanium diphosphide (ZnGeP 2) and cadmium silicon diphosphide (CdSiP 2) chalcopyrite crystals. | Session 4: Ultrafast Laser Spectroscopy |
| 38 | Ultra-supercontinuum broadening from anti-Stokes to Stokes arising from fifth- and third-order susceptibilities from self-phase modulation for isotropic liquid, solid, and gaseous media with extremely intense visible femtosecond pump pulses | Alfano, Robert; Mazhar, Shah Faisal; Sharonov, Mikhail; Shi, Lingyan | Ultra-supercontinuum broadening from anti-Stokes to Stokes arising from fifth- and third-order susceptibilities from self-phase modulation for isotropic liquid, solid, and gaseous media with extremely intense visible femtosecond pump pulses | Session 4: Ultrafast Laser Spectroscopy |
| 39 | Ultrafast signatures of spin and orbital orders in the spin-orbit entangled Mott insulator Sr2CrO4 | Lee, Min-Cheol; Occhialini, Connor; Li, Jiarui; Zhu, Zhihai; Mix, La Moyne; Yarotski, Dmitry; Comin, Riccardo; Prasankumar, Rohit | We used ultrafast optical spectroscopy to study non-equilibrium spin and orbital order dynamics in Sr 2CrO 4, a 3 d antiferromagnetic Mott insulator. | Session 4: Ultrafast Laser Spectroscopy |
| 40 | Coherent exciton-polaritons modified by population dynamics and strong coupling | Paul, Jagannath; Wahlstrand, Jared; Bristow, Alan | Previous studies of population time dependence of excitons in a GaAs quantum well revealed persistent many-body effects arising due to polarization-polarization scattering between photoexcited bright states within the light-cone and dark states outside the light-cone. | Session 4: Ultrafast Laser Spectroscopy |
| 41 | Intermediate Stages of Ultrafast Melting of Gold Thin Films | Assefa, Tadesse; Cao, Yue; Koch, Robert; Wu, Longlong; Suzana, Ana; Huang, Xiaojing; Bozin, Emil; Kim, Hyunjung; Billinge, Simon; Robinson, Ian | This talk will describe the results of an ultrafast single-shot melting experiment carried out at the PAL-XFEL, combined with synchrotron-based X-ray nanodiffraction to examine the domain formed. | Session 4: Ultrafast Laser Spectroscopy |