Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Vanneste, Christian"'
Publikováno v:
Physical Review A 91, 043810 (2015)
We use time-domain numerical simulations of a two-dimensional (2D) scattering system to study the interaction of a collection of emitters resonantly coupled to an Anderson-localized mode. For a small electric field intensity, we observe the strong co
Externí odkaz:
http://arxiv.org/abs/1411.5561
Publikováno v:
Optics Letters, Vol. 37, No. 9 (05/01/2012)
We study numerically interaction of spatially localized modes in strongly scattering two-dimensional media. We move eigenvalues in the complex plane by changing gradually the index of a single scatterer. When spatial and spectral overlap is sufficien
Externí odkaz:
http://arxiv.org/abs/1204.5349
Publikováno v:
J. Opt. Soc. Am. B 28, 2947-2955 (2011)
Recent numerical and theoretical studies have demonstrated that the modes at threshold of a random laser are in direct correspondence with the resonances of the same system without gain, a feature which is well known in a conventional laser but which
Externí odkaz:
http://arxiv.org/abs/1107.5990
Publikováno v:
Phys. Rev. A 84, 023826 (2011)
A numerical study is presented of one-dimensional and two-dimensional random lasers as a function of the pumping rate above the threshold for lasing. Depending on the leakiness of the cavity modes, we observe that the stationary lasing regime becomes
Externí odkaz:
http://arxiv.org/abs/1011.5902
Publikováno v:
Applied Optics 48, 6 (2009) 1047-1051
We present a formal analogy between the eigenvalue problem for guided scalar modes in a low-contrast photonic bandgap fiber and quasi-stationary TM modes of a two-dimensional (2D) photonic structure. Using this analogy, we numerically study the confi
Externí odkaz:
http://arxiv.org/abs/1004.2207
Autor:
Andreasen, Jonathan, Asatryan, Ara, Botten, Lc, Byrne, Michael, Cao, Hui, Ge, Li, Labonté, Laurent, Sebbah, Patrick, Stone, A. D., Türeci, Hakan, Vanneste, Christian
In conventional lasers, the optical cavity that confines the photons also determines essential characteristics of the lasing modes such as wavelength, emission pattern, ... In random lasers, which do not have mirrors or a well-defined cavity, light i
Externí odkaz:
http://arxiv.org/abs/1001.4671
Publikováno v:
Phys. Rev. A 81 (2010) 043818
A study on the effects of optical gain nonuniformly distributed in one-dimensional random systems is presented. It is demonstrated numerically that even without gain saturation and mode competition, the spatial nonuniformity of gain can cause dramati
Externí odkaz:
http://arxiv.org/abs/0910.5285
We present measurements of the spatial intensity distribution of localized modes in a two-dimensional open microwave cavity randomly filled with cylindrical dielectric scatterers. We show that each of these modes displays a range of localization leng
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702657
Publikováno v:
J. Phys. I France 7 (1997) 1071--1096
The paper describes a formulation of discrete scalar wave propagation in an inhomogeneous medium by the use of elementary processes obeying a discrete Huygens' principle and satisfying fundamental symmetries such as time-reversal, reciprocity and iso
Externí odkaz:
http://arxiv.org/abs/cond-mat/9808099
Publikováno v:
Eur.Phys.J.B3:517-534,1998
The construction of discrete scalar wave propagation equations in arbitrary inhomogeneous media was recently achieved by using elementary dynamical processes realizing a discrete counterpart of the Huygens principle. In this paper, we generalize this
Externí odkaz:
http://arxiv.org/abs/cond-mat/9808035