Results 61 to 70 of about 622,419 (187)

On the Influence of Conduction Electrons on the Ferroelectric Curie Temperature [PDF]

, 1969
The frequency dependence of the transverse optical mode in the long-wavelength limit on the density of conduction electrons is calculated. This dependence is a consequence of the dielectric properties of the free electron gas which gives a change of the ...
Cochran, Cochran, Cochran, Cochran, Cochran, Cochran, Cowley, Cowley, Cowley, Hirahara, Pawley, van den Berg, van den Berg, Varga, Woods, Woods, Ziman   +16 more
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The nonlinear optical absorption and optical limiting properties of noble metal-doped ZnO films

AIP Advances, 2021
Herein, pure ZnO, Ag-doped ZnO, and Cu-doped ZnO films with excellent ultrafast (femtosecond) nonlinear absorption/limiting behavior were deposited on quartz substrates by magnetron sputtering.
Peiran Tian
doaj   +1 more source

Quantification of nonlinear absorption in ternary As-Sb-Se chalcogenide glasses

, 2018
In this article, we studied intensity dependent third order nonlinear optical response in ternary As40Sb7Se53 and As40Sb10Se50 chalcogenide glasses by employing nanosecond Z-scan technique.
Adarsh, K. V., Aswin, J. R., Das, N., Khan, Pritam, Naik, R., Panda, A. K., Pradhan, P.   +6 more
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NIR Follow-Up of the VVDS 02hr Field [PDF]

, 2006
We present a new K-band survey covering 623 arcmin$^2$ in the VVDS 0226-0430 deep field down to a limiting magnitude K$_{\rm{Vega}}$ $\leq$ 20.5. We use the spectroscopic sample extracted from this new K-band catalogue to assess the effectiveness of ...
Adami, C., Arnouts, S., Bardelli, S., Bolzonella, M., Bondi, M., Bongiorno, A., Bottini, D., Brinchmann, J., Brun, V. Le, Cappi, A., Charlot, S., Ciliegi, P., Contini, T., Cucciati, O., de la Torre, S., Fevre, O. Le, Foucaud, S., Franzetti, P., Garilli, B., Gavignaud, I., Guzzo, L., Ilbert, O., Iovino, A., Lamareille, F., Maccagni, D., Marano, B., Marinoni, C., Mazure, A., McCracken, H. J., Mellier, Y., Meneux, B., Merighi, R., Merluzzi, P., Paltani, S., Pello, R., Picat, J. -P., Pollo, A., Pozzetti, L., Radovich, M., Scaramella, R., Scodeggio, M., Temporin, S., Tresse, L., Vergani, D., Vettolani, G., Walcher, C. J., Zamorani, G., Zanichelli, A., Zucca, E.   +48 more
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Fundamental performance limits of optical duobinary

Optics Express, 2008
We present a rigorous analysis defining the fundamental performance limits of duobinary line-coding for optical communications. First, we compare the back-to-back performance of duobinary and intensity modulation systems in an AWGN channel satisfying the Nyquist criterion, with both linear and quadratic receiver.
JOINDOT M, BOSCO, GABRIELLA, CARENA, Andrea, CURRI, Vittorio, POGGIOLINI, PIERLUIGI   +4 more
openaire   +4 more sources

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Molecules
Although laser technology brings convenience to production and daily life, it also causes high-energy damage. Therefore, there is an urgent need to develop optical limiting materials for laser protection. In this study, a novel nonlinear optical material,
Jingjing Wang, Fulai Liu, Yunfei Li, Long Chen, Yong Chen, Hailong Zhang, Zheng Xie   +6 more
doaj   +1 more source

An all-fiber source of pulsed twin beams at telecom band for quantum communication

, 2012
Motivated by the pursuit of a simple system to produce non-classical light sources for long- distance quantum communication, we generate for the first time an all-fiber source of pulsed twin beams in 1550 nm band by using a high gain fiber optical ...
Guo, Xueshi, Li, Xiaoying, Liu, Nannan, Ou, Z. Y., Yang, Lei   +4 more
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Two-photon absorption study with coupled mode formalism

JPhys Photonics
Optical limiting devices employ two photon absorption (TPA) in materials for sensor and eye protection. To be able to reduce the intensity threshold for protection, cavity structures can be considered.
Naman Gupta, Sudarshan Das, Srini Krishnamurthy, Sivarama Krishnan, Rituraj   +4 more
doaj   +1 more source

Transient Nonlinear Absorption and Optical Limiting Performance of Bithiophenes Derivatives in Near-Infrared Region

Photonics
Organic photovoltaic materials and nonlinear optical materials share inherent commonalities in molecular characteristics—such as strong light absorption, high charge carrier mobility, and tunable energy levels. Therefore, this study selects a bithiophene-
Shuting Li, Yu Chen, Tianyang Dong, Wenfa Zhou, Xingzhi Wu, Li Jiang, Jidong Jia, Junyi Yang, Zhongguo Li, Yinglin Song   +9 more
doaj   +1 more source

Nonlinear atom optics and bright gap soliton generation in finite optical lattices

, 2001
We theoretically investigate the transmission dynamics of coherent matter wave pulses across finite optical lattices in both the linear and the nonlinear regimes.
A. Görlitz, A. Trombettoni, A.B. Aceves, A.B. Aceves, A.D. Jackson, B. Wu, B.J. Eggleton, B.J. Eggleton, B.P. Anderson, C.A. Sackett, C.M. de Sterke, C.M. de Sterke, C.M. de Sterke, C.M. de Sterke, C.M. de Sterke, C.S. Adams, D. Jaksch, Davide Embriaco, E. Peik, E. Yablonovitch, F. Schreck, F.Kh. Abdullaev, Giuseppe C. La Rocca, H.G. Winful, I. Carusotto, I.H. Deutsch, Iacopo Carusotto, J. Denschlag, K. Berg-Sorensen, K. Bongs, L. Santos, L. Santos, L. Santos, L.D. Carr, M. Greiner, N. Friedman, N.M. Litchinitser, O. Morsch, O. Zobay, P.A. Ruprecht, Q. Niu, S. Burger, S. Burger, S. Pitois, S. Potting, S. Pötting, S.R. Wilkinson, Th. Busch, Th. Busch, V.V. Konotop, W.-M. Liu, W.P. Reinhardt, Yu. Kagan   +52 more
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