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941 Newest Publications about the topic lasers

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Sensors, Vol. 18, Pages 2058: RES-Q-Trace: A Mobile CEAS-Based Demonstrator for Multi-Component Trace Gas Detection in the MIR

27-Jun-2018 | Lang, Norbert ; Macherius, Uwe ; Zimmermann, Henrik ; Glitsch, Sven ; Wiese, Mathias ; Röpcke, Jürgen ; van Helden, ..., Sensors, 2018

Sensors, Vol. 18, Pages 2058: RES-Q-Trace: A Mobile CEAS-Based Demonstrator for Multi-Component Trace Gas Detection in the MIR Sensors doi: 10.3390/s18072058 Authors: Norbert Lang Uwe Macherius Henrik Zimmermann Sven Glitsch Mathias Wiese Jürgen Röpcke Jean-Pierre H. van ...

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Crystal-on-crystal chips for in situ serial diffraction at room temperature

26-Jun-2018 | Zhong Ren; Medine Ayhan; Sepalika Bandara; Kalinga Bowatte; Indika Kumarapperuma; Semini Gunawardana; Heewhan Shin; ..., Lab on a Chip, 2018

Recent developments in serial crystallography at X-ray free electron lasers (XFELs) and synchrotrons have been driven by two scientific goals in structural biology – first, static structure determination from nano or microcrystals of membrane proteins and large complexes that are difficult for ...

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Monitoring molecular nonadiabatic dynamics with femtosecond X-ray diffraction [Chemistry]

26-Jun-2018 | Kochise Bennett; Markus Kowalewski; Jérémy R. Rouxel; Shaul Mukamel, Proceedings of the National Academy of Sciences current issue, 2018

X-ray crystallography has long been used to determine the structure of crystals and molecular samples. More recent advancements in light sources and computational methods made it possible to routinely determine the structure of large proteins. The introduction of X-ray free-electron lasers opens ...

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A high-efficiency regime for gas-phase terahertz lasers [Engineering]

26-Jun-2018 | Fan Wang; Jeongwon Lee; Dane J. Phillips; Samuel G. Holliday; Song-Liang Chua; Jorge Bravo-Abad; John D. Joannopoulo ..., Proceedings of the National Academy of Sciences current issue, 2018

Optically pumped far-infrared (OPFIR) lasers are one of the most powerful continuous-wave terahertz sources. However, such lasers have long been thought to have intrinsically low efficiency and large sizes. Moreover, all previous theoretical models failed to predict even qualitatively the ...

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Materials, Vol. 11, Pages 1049: Microscopic View of Defect Evolution in Thermal Treated AlGaInAs Quantum Well Revealed by Spatially Resolved Cathodoluminescence

20-Jun-2018 | Song, Yue ; Zhang, Ligong ; Zeng, Yugang ; Qin, Li ; Zhou, Yinli ; Ning, Yongqiang ; Wang, Lijun, Materials, 2018

Materials, Vol. 11, Pages 1049: Microscopic View of Defect Evolution in Thermal Treated AlGaInAs Quantum Well Revealed by Spatially Resolved Cathodoluminescence Materials doi: 10.3390/ma11061049 Authors: Yue Song Ligong Zhang Yugang Zeng Li Qin Yinli Zhou Yongqiang Ning Lijun ...

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Seafloor fiber optic cables can listen for earthquakes

15-Jun-2018 | Eric Hand, Science , 2018

Some 70% of Earth's surface is covered by water, and yet nearly all earthquake detectors are on land. Aside from some expensive battery-powered sensors dropped to the sea floor and later retrieved, and a few arrays of near-shore detectors connected to land, seismologists have no way of monitoring ...

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A silicon Brillouin laser

08-Jun-2018 | Nils T. Otterstrom; Ryan O. Behunin; Eric A. Kittlaus; Zheng Wang; Peter T. Rakich, Science , 2018

Brillouin laser oscillators offer powerful and flexible dynamics as the basis for mode-locked lasers, microwave oscillators, and optical gyroscopes in a variety of optical systems. However, Brillouin interactions are markedly weak in conventional silicon photonic waveguides, stifling progress ...

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Crystal growth and properties of the disordered crystal Yb:SrLaAlO4: a promising candidate for high-power ultrashort pulse lasers

06-Jun-2018 | Zhongben Pan; Xiaojun Dai; Yuanhua Lei; Huaqiang Cai; Josep Maria Serres; Magdalena Aguiló; Francesc Díaz; ..., CrystEngComm, 2018

A high quality Yb3+-doped strontium lanthanum aluminate crystal, Yb:SrLaAlO4 (Yb:SLA) is grown by the Czochralski method. It is tetragonal (sp. gr. I4/mmm, a = b = 3.7536 Å, c = 12.6253 Å). Room- and low-temperature spectroscopy of Yb3+ ions in this crystal are studied. The Stark splitting is ...

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Intrinsic optical sectioning with upconverting nanoparticles

30-May-2018 | C. Sorbello; R. Etchenique, Chemical Communication, 2018

Multiphoton microscopy is a powerful technique for imaging due to its deep penetration, low scattering and sectioning power, allowing control on all three axes for both imaging and molecular actuation, but involves expensive femtosecond lasers. We show that lanthanide-based Upconverting ...

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Amplified Spontaneous Emission in Phenylethylammonium Methylammonium Lead Iodide Quasi-2D Perovskites

26-May-2018 | Matthew R. Leyden; toshinori matsushima; Chuanjiang Qin; Shibin Ruan; Hao Ye; Chihaya Adachi, Physical Chemistry Chemical Physics, 2018

Organo-metal-halide perovskites are a promising set of materials for optoelectronic applications such as solar cells, light emitting diodes and lasers. Perovskite thin films have demonstrated amplified spontaneous emission thresholds as low as 1.6 J/cm2 and lasing thresholds as low as ...

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