Results 51 to 60 of about 622,419 (187)

Optical limiting using Laguerre-Gaussian beams

, 2007
We demonstrate optical limiting using the self-lensing effect of a higher-order Laguerre-Gaussian beam in a thin dye-doped polymer sample, which we find is consistent with our model using Gaussian decomposition.
Chen, Fang, Fang, Benjie, Jin, Yuqi, Li, Qingwei, Sang, Fengting, Xu, Mingxiu, Zhang, Peng, Zhang, Yuelong, Zhao, Weili, 张岳龙   +9 more
core   +1 more source

Enhanced reverse saturable absorption and optical limiting in heavy-atom-substituted phthalocyanines [PDF]

, 1994
The reverse saturable absorption and the optical-limiting response of metal phthalocyanines can be enhanced by use of the heavy-atom effect. Phthalocyanines containing heavy-metal atoms, such as In, Sn, and Pb, show a nearly factor-of-2 enhancement in ...
Alvarez, Daniel, Jr., Choong, Ingrid, Mansour, Kamjou, Marder, Seth R., Perry, Joseph W., Perry, Kelly J.   +5 more
core   +1 more source

The detection efficiency of on-axis short gamma ray burst optical afterglows triggered by aLIGO/Virgo [PDF]

, 2014
Assuming neutron star (NS) or neutron star/stellar-mass black hole (BH) mergers as progenitors of the short gamma ray bursts, we derive and demonstrate a simple analysis tool for modelling the efficiency of recovering on-axis optical afterglows triggered
Boer, Michel, Branchesi, Marica, Coward, David, Howell, Eric, Lasky, Paul   +4 more
core   +3 more sources

Nonlinear Dynamics of Tetraphenylporphyrin and Dithiaporphyrin and Their Diacids via Pulse Trains with ps/ns Subpulse Widths

Photonics
The nonlinear optical absorption of tetraphenylporphyrin (H2TPP) and dithiaporphyrin (DSP) and their diacids (H4TPP2+ and H2DSP2+) via pulse trains was studied. The subpulse widths of pulse trains were set as 30 ps and 5 ns according to experimental work.
Quan Miao, Erping Sun, Yan Xu
doaj   +1 more source

Transient absorption and photocurrent microscopy show hot electron supercollisions describe the rate-limiting relaxation step in graphene

, 2013
Using transient absorption (TA) microscopy as a hot electron thermometer we show disorder-assisted acoustic-phonon supercollisions (SCs) best describes the rate-limiting relaxation step in graphene over a wide range of lattice temperatures ($T_l=$5-300 K)
Graham, Matt W., McEuen, Paul L., Park, Jiwoong, Ralph, Daniel C., Shi, Su-Fei, Wang, Zenghui   +5 more
core   +1 more source

Influence of structure on the optical limiting properties of nanotubes

, 2005
We investigate the role of carbon nanotubes structure on their optical limiting properties. Samples of different and well-characterized structural features are studied by optical limiting and pump-probe experiments.
D. Riehl, E. Anglaret, He, Hongbing, Izard, Izard, Li, Mansour, N. Izard, O’Connel, P. Billaud, Riggs, Sun, Vivien, Vivien, Xu   +15 more
core   +1 more source

3D printing of optical materials: an investigation of the microscopic properties [PDF]

, 2018
3D printing technologies are currently enabling the fabrication of objects with complex architectures and tailored properties. In such framework, the production of 3D optical structures, which are typically based on optical transparent matrices ...
Arinstein, A., Camposeo, A., Cardarelli, F., Persano, L., Pisignano, D., Uttiya, S., Zussman, E.   +6 more
core   +2 more sources

Precision preparation of strings of trapped neutral atoms [PDF]

, 2006
We have recently demonstrated the creation of regular strings of neutral caesium atoms in a standing wave optical dipole trap using optical tweezers [Y. Miroshnychenko et al., Nature, in press (2006)].
, A Rauschenbeutel, Alt W, D Meschede, Feynman R P, I Dotsenko, L Förster, M Khudaverdyan, Miroshnychenko Y, Miroshnychenko Y Alt W Dotsenko I Förster L Khudaverdyan M Meschede D Reick S Rauschenbeutel A, Schrader D, W Alt, Y Miroshnychenko   +12 more
core   +2 more sources

Non‐linear optical limiting technology based on backward stimulated Brillouin scattering in grade‐index optical fibres

Electronics Letters, 2021
An effective non‐linear optical limiting technology is proposed here based on backward stimulated Brillouin scattering in grade‐index optical fibres. The excellent non‐linear optical limiting performance is experimentally verified by using 0.5 and 1 m ...
Yixiang Xu, Jian Huang, Zhengnan Wu, Yuangang Lu   +3 more
doaj   +1 more source

Optical conductivity of the one-dimensional dimerized Hubbard model at quarter filling

, 2005
We investigate the optical conductivity in the Mott insulating phase of the one-dimensional extended Hubbard model with alternating hopping terms (dimerization) at quarter band filling.
19, Controzzi, Dressel, E. Jeckelmann, Essler, Favand, Gebhard, Gebhard, Gebhard, Giamarchi, H. Benthien, Hirsch, Jeckelmann, Jeckelmann, Jeckelmann, Kim, Mila, Mila, Nishimoto, Pedron, Penc, Schwartz, Shibata, Tsuchiizu, Vescoli, Vescoli, Weiser, White   +27 more
core   +1 more source