Results 61 to 70 of about 5,726,665 (192)

Ship propeller side effects: pressure pulses and radiated noise

, 2016
The present paper deals with the side effects of propellers cavitation, i.e. pressure pulses and radiated noise. These effects are gaining more and more importance for commercial ships for different reasons.
Tani Giorgio, Gaggero Stefano, Gaggero Tomaso, Rizzuto Enrico, Villa Diego, Viviani Michele   +5 more
core   +1 more source

The Characterization of Electric Field Pulses Observed in the Preliminary Breakdown Processes of Normal and Inverted Intracloud Flashes

Remote Sensing
We have studied the parameters of preliminary breakdown (PB) pulses in 395 normal and 319 inverted intracloud (IC) flashes observed in Gifu, Japan, and Ningxia, China, respectively, by using a low-frequency mapping system called fast antenna lightning ...
Dongdong Shi, Jinlai Zhang, Panliang Gao, Dong Zheng, Qi Qi, Jie Shao, Shiqi Kan, Daohong Wang, Ting Wu   +8 more
doaj   +1 more source

Random Search Algorithm-Assisted Automatic Mode-Locked Fiber Lasers

Photonics
Automatic mode-locking is a crucial approach for achieving ultrashort pulses in fiber lasers. Here, a random search algorithm was developed, and an automatic mode-locked laser was constructed.
Penghui Yang, Yanrong Song, Lin Mao, Ruyue You   +3 more
doaj   +1 more source

Observation of Duration-Tunable Soliton Explosion in Passively Mode-Locked Fiber Laser

IEEE Photonics Journal, 2017
We report on the first observation, to the best of our knowledge, of soliton explosions in an ultrafast fiber laser mode-locked by nonlinear polarization evolution.
Pan Wang, Xiaosheng Xiao, Hang Zhao, Changxi Yang   +3 more
doaj   +1 more source

Generation of noise-like pulses with 203 nm 3-dB bandwidth

Optics Express, 2019
Raman-scattering-assisted noise-like pulse (NLP) generation was achieved by using an appropriate segment of high nonlinearity fiber in an erbium-doped fiber laser. Broadband spectrum with 203 nm 3-dB bandwidth was obtained, which, to the best of our knowledge, is the broadest bandwidth achieved for NLPs.
Xuan Wang, Andrey Komarov, Mariusz Klimczak, Lei Su, Dingyuan Tang, Deyuan Shen, Lei Li, Luming Zhao   +7 more
openaire   +3 more sources

Retiming of short pulses using quadratic cascading in a periodically poled lithium niobate waveguide

, 2011
We demonstrate an all-optical technique for the mitigation of timing jitter in short pulse transmission systems. The technique relies on pulse preshaping followed by optical switching in a periodically poled lithium niobate waveguide via cascaded second ...
David J. Richardson, Gallo, K., Liu, Sheng, Petropoulos, P., Richardson, D.J., Kwang Jo Lee, Richardson, David J., Liu, S., Sheng Liu, Francesca Parmigiani, Lee, Kwang Jo, Parmigiani, Francesca, Gallo, Katia,, Periklis Petropoulos, Katia Gallo, Petropoulos, Periklis, Parmigiani, F., Lee, K.J.   +17 more
core   +1 more source

Versatile patterns of multiple rectangular noise-like pulses in a fiber laser

Optics Express, 2016
We report on the generation of versatile patterns of multiple rectangular noise-like pulses (NLPs) in a fiber laser mode-locked by nonlinear amplifying loop mirror (NALM). Benefiting from the strengthened nonlinear effect of a segment of highly nonlinear fiber (HNLF) in the loop, multiple rectangular NLPs with various patterns are formed depending on ...
Yu-Qi, Huang, You-Li, Qi, Zhi-Chao, Luo, Ai-Ping, Luo, Wen-Cheng, Xu   +4 more
openaire   +2 more sources

Nanosecond electric pulses penetrate the nucleus and enhance speckle formation

, 2007
Nanosecond electric pulses generate nanopores in the interior membranes of cells and modulate cellular functions. Here, we used confocal microscopy and flow cytometry to observe Smith antigen antibody (Y12) binding to nuclear speckles, known as small ...
Joshi, R P, Garner, A L, Kolb, J F, Swanson, R J, Stephen J. Beebe, Yu Jing, R. James Swanson, Schoenbach, K H, Juergen F. Kolb, Karl H. Schoenbach, Allen L. Garner, Ravindra P. Joshi, Deng, Y, Chen, N, George Chen, Beebe, S J, Jing, Y, Nianyong Chen, Chen, G, Yuping Deng   +19 more
core   +2 more sources

Linear-distortion compensation using XPM with parabolic pulses [PDF]

, 2007
We experimentally demonstrate a novel all-optical, all-fiberized scheme that can eliminate linear perturbations in the time domain. The technique relies on converting these distortions from time to frequency domain using parabolic pulses shaped using ...
Parmigiani, Francesca, M. Ibsen, Petropoulos, Periklis, F. Parmigiani, Z. Zhang, Ibsen, Morten, D.J. Richardson, Richardson, David J., T.T. Ng, P. Petropoulos, Ng, Trina T., Zhang, Zhaowei   +11 more
core   +2 more sources

Radar Emitter Recognition Based on Spiking Neural Networks

Remote Sensing
Efficient and effective radar emitter recognition is critical for electronic support measurement (ESM) systems. However, in complex electromagnetic environments, intercepted pulse trains generally contain substantial data noise, including spurious and ...
Zhenghao Luo, Xingdong Wang, Shuo Yuan, Zhangmeng Liu   +3 more
doaj   +1 more source