Results 61 to 70 of about 1,856,713 (355)

Picosecond laser seal welding of glasses with a large gap.

Optics Express, 2019
Ultra-fast lasers can realize selective welding of glasses through nonlinear effect and have the advantages of having high welding accuracy, having small heat-affected zone, having high joint strength and not requiring intermediate absorption layer ...
Hang Chen, J. Duan, Zeqi Yang, Wei Xiong, Leimin Deng   +4 more
semanticscholar   +1 more source

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

A low jitter regenerative amplification picosecond pulse laser with the external trigger signal as local main wave for the SLR

Results in Optics
A distributed feedback picosecond (DFB) pulse laser has been designed with a single pulse energy of 5 pJ and a pulse width of 200 ps, resulting in a spectrum width of 0.12 nm.
Mingliang Long, Zhibo Wu, Ming Wen, Yan Liang, Haifeng Zhang, Hao Chang, Huarong Deng, Zhongping Zhang   +7 more
doaj   +1 more source

Towards coherent optical control of a single hole spin: rabi rotation of a trion conditional on the spin state of the hole [PDF]

, 2009
A hole spin is a potential solid-state q-bit, that may be more robust against nuclear spin induced dephasing than an electron spin. Here we propose and demonstrate the sequential preparation, control and detection of a single hole spin trapped on a self ...
A.F.A. Khatab, A.J. Ramsay, A.M. Fox, Akopian, Atature, Berezovsky, Besombes, Bonadeo, Borri, Boyle, Boyle, Economu, Ellis, Englund, Fischer, Flagg, Gerardot, Greilich, Greilich, H.-Y. Liu, Heidemeyer, Heiss, Heiss, Imamoglu, J. Skiba-Szymanska, J.B.B. Oliveira, Kamada, Kim, Kolodka, Kowalik, Krenner, Kroutvar, Laurent, M. Hopkinson, M.S. Skolnick, Mikkelsen, Nazir, Patton, Press, R.S. Kolodka, Ramsay, Rastelli, S.J. Boyle, Stevenson, Stevenson, Stievater, Stufler, Stufler, T.M. Godden, Takaghi, Wang, Weiner, Wu, Xu, Xu, Young, Zrenner   +56 more
core   +2 more sources

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Research on fiber-solid hybrid picosecond laser technology based on serrated aperture beam shaping

Frontiers in Physics
The high beam fill factor of the flat-top laser can effectively increase the output power of the laser without damaging the components. A fiber-solid hybrid high-energy picosecond pulsed laser system was studied, which realized the gain bandwidth ...
Shun Li, Yang Yang, Haiqiang Wang, Yunchen Zhu, Meijiao Wang, Chao Ma, Xinmin Fan, Yang Zhao, Huizhe Jing, Daiping Liu   +9 more
doaj   +1 more source

Pseudo-topotactic conversion of carbon nanotubes to T-carbon nanowires under picosecond laser irradiation in methanol

Nature Communications, 2017
Pseudo-topotactic conversion of carbon nanotubes into one-dimensional carbon nanowires is a challenging but feasible path to obtain desired diameters and morphologies. Here, a previously predicted but experimentally unobserved carbon allotrope, T-carbon,
Jinying Zhang, Rui Wang, Xi Zhu, A. Pan, Chenxiao Han, Xin Li, Dan Zhao, Chuansheng Ma, Wenjun Wang, H. Su, C. Niu   +10 more
semanticscholar   +1 more source

Unveiling Aggregation‐Induced Singlet Fission in Push–Pull Diketopyrrolopyrrole Water Dispersed Nanoaggregates and Thin Films

Advanced Functional Materials, EarlyView.
Aggregates of diketopyrrolopyrrole dipolar and quadrupolar systems exhibit panchromatic absorption spectra extending in the entire visible range. Upon aggregation in water and in the solid state, their fluorescence is almost completely quenched and their singlet excited state lifetime is significantly shortened.
Roberto Cantoni, Martina Alebardi, Eliana Maria D'Amato, Charu Popli, Yuvraj Patil, Pietro Mancini, Alessandro Di Michele, Anna Spalletti, Rajneesh Misra, Theodore Goodson, Benedetta Carlotti   +10 more
wiley   +1 more source

Controlled lasing from active optomechanical resonators [PDF]

, 2014
Planar microcavities with distributed Bragg reflectors (DBRs) host, besides confined optical modes, also mechanical resonances due to stop bands in the phonon dispersion relation of the DBRs.
Akimov, A. V., Bayer, M., Brodbeck, S., Brueggemann, C., Czerniuk, T., Glavin, B. A., Hoefling, S., Kamp, M., Schneider, C., Tepper, J., Yakovlev, D. R.   +10 more
core   +3 more sources

Electrochemical Formation of BiVO4/BiPO4 Photoanodes for Enhanced Selectivity toward H2O2 Generation

Advanced Functional Materials, EarlyView.
In acidic KPi, V dissolves from the BiVO4 lattice, while adsorbed phosphate reacts with the electrode under an external bias, forming a BiPO4 surface layer. This BiPO4 layer exhibits stronger bicarbonate adsorption, redirecting the water oxidation pathway toward two‐electron H2O2 production.
Kaijian Zhu, Xinyi Zhang, Lan Wen, Hongjiang Chen, Yudhistira Tirtayasri Amrillah, Vivi Fauzia, Hongzhen Dong, Shaoqiang Su, Wenjun Luo, Ferry Anggoro Ardy Nugroho, Patrick H.‐L. Sit, Yun Hau Ng, Fatwa F. Abdi   +12 more
wiley   +1 more source