Results 251 to 260 of about 2,049 (291)

Structure of chaos in the laser with saturable absorber

Physical Review Letters, 1992
We carry out a topological analysis on an experimental data set from the laser with saturable absorber. This analysis is based on the topological organization of low period orbits extracted from chaotic time series data. This allows us to determine for the first time that previously proposed models are compatible with the ...
, Papoff, , Fioretti, , Arimondo, , Mindlin, , Solari, , Gilmore   +5 more
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Study of Saturable Absorber Switching Efficiencies

Journal of Applied Physics, 1969
Theoretical and experimental studies of absorber switching efficiencies are described for a ruby laser operating at 77°K. The various operating regimes of absorber-switched lasers are reviewed and the importance of inclusion in the theory of nonsaturable losses associated with the laser and absorber media is demonstrated.
Szabo, A., Erickson, L. E.
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Vertical-cavity saturable absorber intensity modulator

Journal of Lightwave Technology, 2003
We propose and demonstrate a reflection-type optical modulator, with surface-normal architecture, that exploits the optical saturation of absorption in semiconductor quantum wells. The modulation section of the modulator, which is composed of quantum wells placed within a Fabry-Perot cavity, is optically controlled by an intensity-modulated beam ...
M, Guina, A, Vainionpää, A, Harkonen, L, Orsila, J, Lyytikäinen, O G, Okhotnikov   +5 more
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Microscopic analysis of saturable absorbers: Semiconductor saturable absorber mirrors versus graphene

Journal of Applied Physics, 2016
Fully microscopic many-body calculations are used to study the influence of strong sub-picosecond pulses on the carrier distributions and corresponding optical response in saturable absorbers used for mode-locking—semiconductor (quantum well) saturable absorber mirrors (SESAMs) and single layer graphene based saturable absorber mirrors (GSAMs).
J. Hader, H.-J. Yang, M. Scheller, J. V. Moloney, S. W. Koch   +4 more
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Saturation-Induced Perfect Absorbers

Conference on Lasers and Electro-Optics, 2018
We 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, 1995
We 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, 1967
The 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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Saturable absorber intensity modulator

IEEE Journal of Quantum Electronics, 2003
We propose and demonstrate a reflection-type optical modulator, with surface-normal architecture that exploits saturation of absorption in semiconductor quantum wells pumped optically. The modulation section, composed of quantum wells placed within a Fabry-Perot cavity, is exposed to an intensity-modulated beam generated by an in-plane laser integrated
M.D. Guina, A. Vainionpaa, L. Orsila, A. Harkonen, J. Lyytikainen, L.A. Gomes, O.G. Okhotnikov   +6 more
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Transient Bimodality in a Bistable Laser with Saturable Absorber

Europhysics Letters (EPL), 1987
In 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), 1974
An 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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