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Saturation-Induced Perfect Absorbers
Conference on Lasers and Electro-Optics, 2018We introduce a new regime of optical absorption where increasing the incoming intensity - equivalently inducing optical saturation - leads to the enhancement of total absorption in a device, and always reaches 100% at a critical value.
Jahromi, Ali K., Abouraddy, Ayman F.
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Multiwave diffraction in saturable absorbers
Journal of the Optical Society of America B, 1995We present an analytical description of the degenerate multiwave diffraction of an independent probe beam incident at an arbitrary angle upon a population grating created by two resonant and coherent pump beams in a saturable absorbing medium. We have also undertaken experimental verification of some of the features, using a thin-film sample of ...
K. Divakara Rao, K. K. Sharma
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WAVE INTERACTIONS IN SATURABLE ABSORBERS
Applied Physics Letters, 1967The interaction between waves in an idealized saturable absorber is discussed. It is shown that the presence of a strong wave will cause the line to appear to be ``hole-burned'' when probed by a second wave, even though the broadening mechanisms are conventionally homogeneous.
S. E. Schwarz, T. Y. Tan
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Modeling absorption in saturable absorbers
Optics Communications, 2001Abstract Non-linear absorption in boric acid glass films with 10−4 M concentration of fluorescein and rhodamine 6G was measured with beam intensity variation covering six orders of magnitude. The non-linear absorption in these systems has been interpreted in terms of the four-level model of saturable absorbers.
Alok Sharan +4 more
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Transient Bimodality in a Bistable Laser with Saturable Absorber
Europhysics Letters (EPL), 1987In a laser bistable operation the transient response is investigated when a control parameter is step-switched to a value outside the bistability region. A two-peaked probability distribution for the laser intensity at a given delay time is measured under the influence of internal noise or an externally applied noise.
ARIMONDO E, DANGOISSE D, FRONZONI, LEONE
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Pulse shaping with saturable absorbers
1974 International Electron Devices Meeting (IEDM), 1974An active pulse shaper which can generate time waveforms which are very different from those produced naturally by laser oscillators has been devised. The system, which is in effect an optical shutter with variable transmission, consists of an array of bleachable dye cells.
R. A. Elliott, G. A. Massey
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Optical rogue waves in a laser with saturable absorber
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017Extreme events and rogue waves (RW) are commonly know as events with very high amplitude whose frequent occurrence is not explainable through the statistics assumed for the set of data under study. Born in oceanography, the concept of extreme events has been extended to many different optical systems in recent years, such as optical fibers [1], laser ...
Rimoldi, C. +3 more
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2R regeneration study in a microcavity with a saturable absorber
Optics Communications, 2004We theoretically study the dynamical response of a saturable absorber (SA) in a microcavity realizing a non-linear mirror (NLM). We compare the effects of the SA response time on the extinction ratio of a single pulse crossing a single NLM and a two NLM based device. We also study 2R regeneration of a 40 Gbit/s pulses train with a single NLM.
Ginovart, Frédéric +2 more
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Neuromimetic dynamics in a micropillar laser with saturable absorber
2015 17th International Conference on Transparent Optical Networks (ICTON), 2015We study the neuromimetic properties of a micropillar laser with saturable absorber. The investigated properties are: excitability, refractory periods and temporal summation. The absolute refractory period is the amount of time after a first excitable pulse has been emitted during which it is not possible to excite the system anymore.
F. Selmi +5 more
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High-order optical nonlinearities in saturable absorbers
Optics Letters, 1986We present an experimental and theoretical study of self-diffraction in saturable absorbers, concentrating on the case of high-intensity beams interfering within the medium. We have observed fourth-order coherent scattering in DODCI. In our theory, which is not perturbative and is in quantitative agreement with the experiment, high-order scattering ...
H L, Fragnito, S F, Pereira, A, Kiel
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