Improvement of all-optical switching performance based on azo dye-doped polymer film using two cross-linearly polarized pump beams

The development of classical and quantum information–processing technology calls for on-chip integrated sources of structured light. Although integrated vortex microlasers have been previously demonstrated, they remain static and possess relatively high lasing thresholds, making them unsuitable for high-speed optical communication and computing. We introduce perovskite-based vortex microlasers and demonstrate their application to ultrafast all-optical switching at room temperature. By exploiting both mode symmetry and far-field properties, we reveal that the vortex beam lasing can be switched to linearly polarized beam lasing, or vice versa, with switching times of 1 to 1.5 picoseconds and energy consumption that is orders of magnitude lower than in previously demonstrated all-optical switching. Our results provide an approach that breaks the long-standing trade-off between low energy consumption and high-speed nanophotonics, introducing vortex microlasers that are switchable at terahertz frequencies.

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All‐optical switching in a dye‐doped polymer fiber Fabry–Perot waveguide

Applied Physics Letters ◽

10.1063/1.117449 ◽

1996 ◽

Vol 69 (13) ◽

pp. 1835-1836 ◽

Cited By ~ 19

Author(s):

D. J. Welker ◽

M. G. Kuzyk

Keyword(s):

Optical Switching ◽

Polymer Fiber ◽

Fabry Perot ◽

All Optical ◽

Doped Polymer ◽

All Optical Switching

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Plasmonic layer-selective all-optical switching of magnetization with nanometer resolution

Nature Communications ◽

10.1038/s41467-019-12699-0 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 17

Author(s):

D. O. Ignatyeva ◽

C. S. Davies ◽

D. A. Sylgacheva ◽

A. Tsukamoto ◽

H. Yoshikawa ◽

...

Keyword(s):

Femtosecond Laser ◽

Magnetic Recording ◽

Optical Switching ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

All Optical ◽

Polarization Axis ◽

Linearly Polarized ◽

All Optical Switching ◽

Better Than

Abstract All-optical magnetization reversal with femtosecond laser pulses facilitates the fastest and least dissipative magnetic recording, but writing magnetic bits with spatial resolution better than the wavelength of light has so far been seen as a major challenge. Here, we demonstrate that a single femtosecond laser pulse of wavelength 800 nm can be used to toggle the magnetization exclusively within one of two 10-nm thick magnetic nanolayers, separated by just 80 nm, without affecting the other one. The choice of the addressed layer is enabled by the excitation of a plasmon-polariton at a targeted interface of the nanostructure, and realized merely by rotating the polarization-axis of the linearly-polarized ultrashort optical pulse by 90°. Our results unveil a robust tool that can be deployed to reliably switch magnetization in targeted nanolayers of heterostructures, and paves the way to increasing the storage density of opto-magnetic recording by a factor of at least 2.

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Optical characterization and all-optical switching of benzenesulfonamide azo dye

Optik ◽

10.1016/j.ijleo.2015.08.176 ◽

2016 ◽

Vol 127 (3) ◽

pp. 1160-1166 ◽

Cited By ~ 20

Author(s):

Mohammed F. Al-Mudhaffer ◽

Alaa Y. Al-Ahmad ◽

Qusay M. Ali Hassan ◽

Chassib A. Emshary

Keyword(s):

Azo Dye ◽

Optical Switching ◽

Optical Characterization ◽

All Optical ◽

All Optical Switching

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DYNAMIC HOLOGRAPHIC GRATINGS IN METHYL RED-DOPED NEMATIC LIQUID CRYSTALS

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863503001560 ◽

2003 ◽

Vol 12 (04) ◽

pp. 441-446 ◽

Cited By ~ 6

Author(s):

O. RUZAK ◽

N. COLLINGS ◽

W. A. CROSSLAND ◽

T. D. WILKINSON ◽

A. B. DAVEY ◽

...

Keyword(s):

Liquid Crystals ◽

Cell Surface ◽

Azo Dye ◽

Optical Switching ◽

Methyl Red ◽

Holographic Gratings ◽

Written Information ◽

Dynamic Holography ◽

All Optical ◽

All Optical Switching

Orientational photorefractivity in liquid crystals doped with azo dye MR crystals is studied. The experiments are carried out with no voltage applied. Dynamic behavior and its dependence on writing beams intensity are presented. When excited by light, the dye tends to bond to the cell surface. Such an effect is irreversible and leads to the permanent component formation in diffracted signal. This is not beneficial for applications where change of written information is required (OASLMs, dynamic holography, all-optical switching). The process was strongly suppressed and was virtually eliminated for the light intensities used, by the choice of materials for alignment surfaces.

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All-optical switching in azo dye doped liquid crystals based on spatial cross-phase modulation

OSA Continuum ◽

10.1364/osac.434765 ◽

2021 ◽

Author(s):

Yujia Pan ◽

Ziyao Lyu ◽

Changshun Wang

Keyword(s):

Liquid Crystals ◽

Phase Modulation ◽

Azo Dye ◽

Optical Switching ◽

Cross Phase Modulation ◽

All Optical ◽

All Optical Switching

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Au Nanoparticles-Doped Polymer All-Optical Switches Based on Photothermal Effects

Polymers ◽

10.3390/polym12091960 ◽

2020 ◽

Vol 12 (9) ◽

pp. 1960 ◽

Cited By ~ 1

Author(s):

Yue Cao ◽

Daming Zhang ◽

Yue Yang ◽

Baizhu Lin ◽

Jiawen Lv ◽

...

Keyword(s):

Power Consumption ◽

Optical Switching ◽

Au Nanoparticles ◽

Optical Switches ◽

Order Mode ◽

Mode Switch ◽

First Order ◽

All Optical ◽

Doped Polymer ◽

All Optical Switching

This article demonstrated the Au nanoparticles-doped polymer all-optical switches based on photothermal effects. The Au nanoparticles have a strong photothermal effect, which would generate the inhomogeneous thermal field distributions in the waveguide under the laser irradiation. Meanwhile, the polymer materials have the characteristics of good compatibility with photothermal materials, low cost, high thermo-optical coefficient and flexibility. Therefore, the Au nanoparticles-doped polymer material can be applied in optically controlled optical switches with low power consumption, small device dimension and high integration. Moreover, the end-pumping method has a higher optical excitation efficiency, which can further reduce the power consumption of the device. Two kinds of all-optical switching devices have been designed including a base mode switch and a first-order mode switch. For the base mode switch, the power consumption and the rise/fall time were 2.05 mW and 17.3/106.9 μs, respectively at the wavelength of 650 nm. For the first-order mode switch, the power consumption and the rise/fall time were 0.5 mW and 10.2/74.9 μs, respectively at the wavelength of 532 nm. This all-optical switching device has the potential applications in all-optical networks, flexibility device and wearable technology fields.

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