Zobrazeno 1 - 10
of 603
pro vyhledávání: '"H. G. L."'
Autor:
A. A. A. Montenegro, I. Lopes, A. A. de Carvalho, J. L. M. P. de Lima, T. E. M. S. de Souza, H. L. Araújo, F. A. C. Lins, T. A. B. Almeida, H. G. L. A. Montenegro
Publikováno v:
Advances in Geosciences, Vol 48, Pp 19-30 (2019)
Hydrological studies in small basins are essential for investigating the role of distinct processes on water resources conservation and to assess the impact of the natural ecosystems on improving water security especially in semiarid environments. In
Externí odkaz:
https://doaj.org/article/aea80bf858e14f0b93006d55c62c0676
Optical frequency combs emit narrow pulses of light with a stable repetition rate. Equivalently, the generated light spectrum consists of many discrete frequencies spaced by this same repetition rate. These precision light sources have become ubiquit
Externí odkaz:
http://arxiv.org/abs/2108.11140
Publikováno v:
Phys. Rev. E 102, 012312 (2020)
We use an artificial neural network to analyze asymmetric noisy random telegraph signals (RTSs), and extract underlying transition rates. We demonstrate that a long short-term memory neural network can vastly outperform conventional methods, particul
Externí odkaz:
http://arxiv.org/abs/2002.05817
Akademický článek
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Publikováno v:
Phys. Rev. Lett. 115, 243603 (2015)
It has been predicted and experimentally demonstrated that by injecting squeezed light into an optomechanical device it is possible to enhance the precision of a position measurement. Here, we present a fundamentally different approach where the sque
Externí odkaz:
http://arxiv.org/abs/1502.06423
Publikováno v:
Optics Express, Vol. 22, Issue 16, pp. 19277-19283 (2014)
We utilize a high quality calcium fluoride whispering-gallery-mode resonator to stabilize a simple erbium doped fiber ring laser with an emission frequency of 196 THz (wavelenght 1530 nm) to a linewidth below 650 Hz. This corresponds to a relative st
Externí odkaz:
http://arxiv.org/abs/1208.0245
Publikováno v:
Optics Letters, Vol. 34, Issue 21, pp. 3370-3372 (2009)
We demonstrate a narrow line, fiber loop laser using Erbium-doped fiber as the gain material, stabilized by using a microsphere as a transmissive frequency selective element. Stable lasing with a linewidth of 170 kHz is observed, limited by the exper
Externí odkaz:
http://arxiv.org/abs/1208.0243
Publikováno v:
Optics Letters, Vol. 35, Issue 17, pp. 2870-2872 (2010)
A fiber laser is stabilized using a Calcium Fluoride (CaF2) whispering-gallery-mode resonator. It is set up using a semiconductor optical amplifier as a gain medium. The resonator is critically coupled through prisms, and used as a filtering element
Externí odkaz:
http://arxiv.org/abs/1208.0244
Conversion of microwave radiation into the optical range has been predicted to reach unity quantum efficiency in whispering gallery resonators made from an optically nonlinear crystal and supporting microwave and optical modes simultaneously. In this
Externí odkaz:
http://arxiv.org/abs/0905.2961
Publikováno v:
Opt. Express 10, 752-776 (2002)
The quasi-bound modes localized on stable periodic ray orbits of dielectric micro-cavities are constructed in the short-wavelength limit using the parabolic equation method. These modes are shown to coexist with irregularly spaced "chaotic" modes for
Externí odkaz:
http://arxiv.org/abs/physics/0207003