Showing 3,381 - 3,400 results of 3,780 for search '"laser pulse"', query time: 0.21s Refine Results
  1. 3381

    Imaging and controlling coherent phonon wave packets in single graphene nanoribbons by Yang Luo, Alberto Martin-Jimenez, Michele Pisarra, Fernando Martin, Manish Garg, Klaus Kern

    Published 2023-06-01
    “…Here, we demonstrate that the vibrational coherences induced by broadband laser pulses on a single graphene nanoribbon (GNR) can be probed by femtosecond coherent anti-Stokes Raman spectroscopy (CARS) when performed in a scanning tunnelling microscope (STM). …”
    Get full text
    Article
  2. 3382

    Designing a 1550 nm Pulsed Semiconductor Laser-Emission Module Based on a Multiquantum-Well Equivalent Circuit Model by Li Li, Lin Li, Huiwu Xu, Lihua Yan, Gang Li, Dapeng Wang, Jiaju Ying, Fuyu Huang

    Published 2023-03-01
    “…In addition to the power-current features of the actual laser, the critical voltage of the emission module and laser pulses were tested. By comparing the test and simulation results, the effectiveness of the proposed method was confirmed.…”
    Get full text
    Article
  3. 3383

    Silver Nanoplate Composites as Nonlinear Saturable Absorbers for a Q-Switched Laser by Wenhao Lyu, Yuan Cheng, Jiayi An, Marcello Condorelli, Mario Pulvirenti, Giuseppe Compagnini, Xiaogang Wang, Bo Fu, Vittorio Scardaci

    Published 2022-11-01
    “…This study first demonstrates the potential of silver nanoplates as saturable absorbers in generating stable laser pulses with high energy.…”
    Get full text
    Article
  4. 3384

    Formation of Oriented Nanowires from Mixed Metal Oxides by Anna Dikovska, Genoveva Atanasova, Rumen Nikov, Georgi Avdeev, Zara Cherkezova-Zheleva, Daniela Paneva, Nikolay Nedyalkov

    Published 2023-09-01
    “…Using ablation with <i>ps</i> laser pulses, we were able to produce new composite materials or materials containing unstable phases.…”
    Get full text
    Article
  5. 3385

    Fast reversible laser-induced crystallization of Sb-rich Zn-Sb-Se phase change material with excellent stability by Yimin Chen, Guoxiang Wang, Manman Tian, Xiang Shen, Tiefeng Xu, Yegang Lu, Shixun Dai, Qiuhua Nie

    Published 2015-07-01
    “…Typically, there is ∼105 resistance ratio and ∼14% relative reflectivity change in Zn19Sb45.7Se35.3 film when switched by electricity or laser pulses between amorphous and crystalline states. …”
    Get full text
    Article
  6. 3386

    Enhanced proton acceleration in an applied longitudinal magnetic field by A Arefiev, T Toncian, G Fiksel

    Published 2016-01-01
    “…The required kT-level magnetic fields are becoming feasible due to a significant progress that has been made in generating magnetic fields with laser-driven coils using ns-long laser pulses. The possibility of improving characteristics of laser-driven proton beams using such fields is a strong motivation for further development of laser-driven magnetic field capabilities.…”
    Get full text
    Article
  7. 3387

    Characterization of Electromagnetic Pulses Generated from Plasma Associated with Laser Filaments-Excited Aluminum Alloy Interaction by Rong Qi, Chuliang Zhou, Dongdong Zhang, Liwei Song, Xiaojun Yang, Jiayan Gui, Yuxin Leng, Ye Tian, Ruxin Li

    Published 2022-06-01
    “…The relationship between the energy of EMPs and the width and energy of the laser pulses is presented and discussed. These findings are beneficial for gaining insight into the EMP generation mechanism, spatial distribution, and transmission, and for providing more information for the design of EMPs’ shielding.…”
    Get full text
    Article
  8. 3388

    Integration of Tb/Co multilayers within optically switchable perpendicular magnetic tunnel junctions by L. Avilés-Félix, L. Álvaro-Gómez, G. Li, C. S. Davies, A. Olivier, M. Rubio-Roy, S. Auffret, A. Kirilyuk, A. V. Kimel, Th. Rasing, L. D. Buda-Prejbeanu, R. C. Sousa, B. Dieny, I. L. Prejbeanu

    Published 2019-12-01
    “…The helicity-independent single-shot switching of the magnetization in the Tb/Co multilayered stack was achieved using either 60 fs-long or 5 ps laser pulses with incident fluences down to 4.7 mJ/cm2. …”
    Get full text
    Article
  9. 3389

    Laser-driven multi-MeV high-purity proton acceleration via anisotropic ambipolar expansion of micron-scale hydrogen clusters by Satoshi Jinno, Masato Kanasaki, Takafumi Asai, Ryutaro Matsui, Alexander S. Pirozhkov, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Nobuhiko Nakanii, Masaki Kando, Nobuko Kitagawa, Kunihiro Morishima, Satoshi Kodaira, Yasuaki Kishimoto, Tomoya Yamauchi, Mitsuru Uesaka, Hiromitsu Kiriyama, Yuji Fukuda

    Published 2022-10-01
    “…Abstract Multi-MeV high-purity proton acceleration by using a hydrogen cluster target irradiated with repetitive, relativistic intensity laser pulses has been demonstrated. Statistical analysis of hundreds of data sets highlights the existence of markedly high energy protons produced from the laser-irradiated clusters with micron-scale diameters. …”
    Get full text
    Article
  10. 3390

    Response of NIH 3T3 Fibroblast Cells on Laser-Induced Periodic Surface Structures on a 15×(Ti/Zr)/Si Multilayer System by Suzana Petrović, Davor Peruško, Alexandros Mimidis, Paraskeva Kavatzikidou, Janez Kovač, Anthi Ranella, Mirjana Novaković, Maja Popović, Emmanuel Stratakis

    Published 2020-12-01
    “…The multilayer 15×(Ti/Zr)/Si thin films were modified by femtosecond laser pulses in air to induce the following modifications: (i) mixing of components inside of the multilayer structures, (ii) the formation of an ultrathin oxide layer at the surfaces, and (iii) surface nano-texturing with the creation of laser-induced periodic surface structure (LIPSS). …”
    Get full text
    Article
  11. 3391

    Hysteresis and Photoconductivity of Few‐Layer ReSe2 Field Effect Transistors Enhanced by Air Pressure by Kimberly Intonti, Enver Faella, Loredana Viscardi, Arun Kumar, Ofelia Durante, Filippo Giubileo, Maurizio Passacantando, Hoi Tung Lam, Konstantinos Anastasiou, Monica F. Craciun, Saverio Russo, Antonio Di Bartolomeo

    Published 2023-08-01
    “…The transient behavior of the device exposed to laser pulses shows a faster response and a higher photodetection efficiency at ambient pressure, with the highest signal‐to‐noise ratio at the valley of the transfer curve between p‐ and n‐type conduction.…”
    Get full text
    Article
  12. 3392

    Preparation, characterization, and nonlinear optical properties of graphene oxide thin film doped with low chirality metallic SWCNTs by Asmaa M. Abozied, Ayman M. Mostafa, A. Abouelsayed, A.F. Hassan, A.A. Ramadan, Emad A. Al-Ashkar, Badawi Anis

    Published 2021-05-01
    “…We have investigated their nonlinear optical properties using open and closed Z-scan technique at Nd:YAG laser at 1064 nm laser pulses (7 ns, 10 Hz). The nonlinear absorption coefficient β, nonlinear refractive index n2, and third order nonlinear susceptibility χ3 were calculated. …”
    Get full text
    Article
  13. 3393

    Nanoscatterer-Assisted Fluorescence Amplification Technique by Sylvain Bonnefond, Antoine Reynaud, Julie Cazareth, Sophie Abélanet, Massimo Vassalli, Frédéric Brau, Gian Luca Lippi

    Published 2023-10-01
    “…Amplification of up to a factor of 40 is experimentally demonstrated in ultrapure water with dispersed TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> nanoparticles (30 to 50 nm in diameter) and fluorescein dye at 200 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>mol concentration (pumped with 5 ns long, 3 mJ laser pulses at 490 nm). The measurements show a measurable reduction in linewidth at the emission peak, indicating that feedback-induced stimulated emission contributes to the large gain observed.…”
    Get full text
    Article
  14. 3394

    Ultrashort pulsed laser induced complex surface structures generated by tailoring the melt hydrodynamics by Fotis Fraggelakis, George D. Tsibidis, Emmanuel Stratakis

    Published 2022-03-01
    “…The method employs spatially controlled double fs laser pulses to actively regulate the hydrodynamic microfluidic motion of the melted layer that gives rise to the structures formation. …”
    Get full text
    Article
  15. 3395

    Dual-Laser-Induced Breakdown Thermometry via Sound Speed Measurement: A New Procedure for Improved Spatiotemporal Resolution by Shen Li, Wubin Weng, Chengdong Kong, Marcus Aldén, Zhongshan Li

    Published 2020-05-01
    “…To eliminate the interference, in present work, a new measurement procedure was proposed, where two individual laser pulses with optimized firing order and delay time were employed. …”
    Get full text
    Article
  16. 3396

    Laser-driven production with advanced targets of Copper-64 for medical applications by A. Maffini, F. Mirani, A. C. Giovannelli, A. C. Giovannelli, A. C. Giovannelli, A. Formenti, A. Formenti, M. Passoni

    Published 2023-07-01
    “…In this respect, a promising alternative is laser-driven proton accelerators based on the interaction of superintense laser pulses with target materials. Because of their potential compactness and flexibility, they are under investigation for several applications ranging from materials science to nuclear medicine. …”
    Get full text
    Article
  17. 3397

    Bi doped LaOCl and LaOF thin films grown by pulsed laser deposition by Babiker M. Jaffar, H.C. Swart, H.A.A. Seed Ahmed, A. Yousif, R.E. Kroon

    Published 2024-03-01
    “…The amount of ablated material present on the substrate was much less for LaOF:Bi compared to LaOCl:Bi, which is attributed to the greater bandgap and hence weaker absorption of the laser pulses for LaOF:Bi. Therefore phosphors based on LaOCl as the host material were found to be preferable over LaOF under the PLD conditions used in this study.…”
    Get full text
    Article
  18. 3398

    Multipath Data Storage by Third-Order Nonlinear Optical Properties in Zinc Oxide Nanostructures by Federico Ortíz-Trejo, Martín Trejo-Valdez, Juan Pablo Campos-López, Joel Humberto Castro-Chacón, Carlos Torres-Torres

    Published 2020-08-01
    “…By recording the third-order nonlinear optical response exhibited by the nanomaterials, a straightforward XOR encryption system controlled by laser pulses was developed. Identification of nonlinear optical signals in propagation through the samples was monitored by a standard optical Kerr gate configuration. …”
    Get full text
    Article
  19. 3399

    Carrier-envelope-phase-dependent dissociation of hydrogen by Han Xu, J-P Maclean, D E Laban, W C Wallace, D Kielpinski, R T Sang, I V Litvinyuk

    Published 2013-01-01
    “…We studied the dependence of dissociative ionization in H _2 on carrier-envelope phase (CEP) of few-cycle (6 fs) near-infrared laser pulses. For low-energy channels, we present the first experimental observation of the CEP dependence of combined dissociation yield (with protons emitted in both directions), as well as the highest degree of asymmetry reported to date (40%). …”
    Get full text
    Article
  20. 3400

    Revealing the interlayer van der Waals coupling of bi-layer and tri-layer MoS2 using terahertz coherent phonon spectroscopy by Peng-Jui Wang, Po-Cheng Tsai, Zih-Sian Yang, Shih-Yen Lin, Chi-Kuang Sun

    Published 2022-12-01
    “…The layers’ THz vibration is displacively stimulated and temporally retrieved by near-UV femtosecond laser pulses, revealing Raman-active and Raman-inactive modes in one measurement. …”
    Get full text
    Article