scholarly journals Optical bistability in reflection from multilayer metal-dielectric structure with Kerr nonlinearity

2021 ◽  
Vol 24 (1) ◽  
pp. 71-75
Author(s):  
S.G. Ilchenko ◽  
◽  
R.A. Lymarenko ◽  
V.B. Taranenko ◽  
◽  
...  
Keyword(s):  
Optical Bistability ◽  
Incident Light ◽  
Kerr Nonlinearity ◽  
Dielectric Structure ◽  
Nonlinear Structure ◽  
Nonlinear Reflection ◽  
Bistable Switching ◽  
Intracavity Laser ◽  
High Reflection ◽  
Multilayer Metal

Both static and dynamic characteristics of light reflected from a specially designed multilayer metal-dielectric structure with Kerr nonlinearity have been studied in this work. Various regimes of nonlinear reflection from the structure have been demonstrated, including bistable switching between low and high reflection states, which occurs at low intensity of the incident light due to a significant enhancement in the optical field in the nonlinear layer under conditions of total internal reflection. This nonlinear structure has been proposed to use as an optically controlled intracavity laser modulator.

Optical bistable switching in pyran dye-doped polymers

2014 ◽  
Vol 23 (02) ◽  
pp. 1450018 ◽  
Author(s):  
Purnima ◽  
Devendra Mohan
Keyword(s):  
Solid State ◽  
Communication Systems ◽  
Optical Bistability ◽  
Nonlinear Refraction ◽  
Nonlinear Behavior ◽  
Single Mode ◽  
Third Order ◽  
Bistable Switching ◽  
Fabry Perot ◽  
Doped Polymers

In the present frame of work, optical bistability using a Fabry–Perot (FP) cavity containing 4-dicyanomethylene-2-methyl-6-p-dimethylaminostyryl-4H-pyran (DCM) dye entrapped in poly-methylmethacrylate (PMMA) matrix is experimentally investigated. Optical nonlinear behavior of solid-state samples is studied using a single-mode Q-switched nanosecond Nd:YAG laser operating at 532 nm. Various optical nonlinear parameters such as nonlinear refractive index (n2) and third-order susceptibility (χ3) of the material are numerically estimated from bistability loops. The origin of optically bistable behavior is attributed to photoisomerization-assisted nonlinear refraction phenomenon. It is observed that nonlinear refraction dominates over nonlinear absorption in giving rise to the optical bistability. The study shows that DCM dye entrapped in solid-state matrices are promising candidate for polymer-based optical switches, data processing, and communication systems.

scholarly journals Optical Bistability in a Controllable Giant Self-Kerr Nonlinear Gaseous Medium under Electromagnetically Induced Transparency and Doppler Broadening

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Phuong Le Thi Minh ◽  
Doai Le Van ◽  
Khoa Dinh Xuan ◽  
Bang Nguyen Huy
Keyword(s):  
Optical Bistability ◽  
Gaseous Medium ◽  
Electromagnetically Induced Transparency ◽  
Ring Cavity ◽  
Kerr Nonlinearity ◽  
Weak Field ◽  
Probe Laser ◽  
Doppler Broadening ◽  
Probe Light ◽  
Induced Transparency

We study optical bistability (OB) in a controllable giant self-Kerr nonlinear atomic gaseous medium placed in a unidirectional ring cavity. The medium is coherently excited by strong controlling field and a weak probe laser field under electromagnetically induced transparency (EIT) and Doppler broadening. In a weak field limit of the probe light, an analytic OB equation for the probe light field is derived as an analytic function of parameters of the controlling field and temperature of the medium. It is shown that OB characters can be manipulated with the parameters due to the controllable properties of the self-Kerr nonlinearity. Furthermore, enhancement of the Kerr nonlinearity reduces the switching intensity threshold and width of the OB.

OPTICAL BISTABILITY IN ONE-DIMENSIONAL COUPLED RESONATOR NONLINEAR OPTICAL WAVEGUIDE

2013 ◽  
Vol 22 (01) ◽  
pp. 1350003
Author(s):  
S. M. HAMIDI ◽  
Z. ESLAMIAT
Keyword(s):  
Band Gap ◽  
Optical Waveguide ◽  
Nonlinear Optical ◽  
Optical Bistability ◽  
Photonic Band Gap ◽  
Wave System ◽  
One Dimensional ◽  
Bistable Switching ◽  
Photonic Band ◽  
Coupled Resonator

In this paper, the optical bistability in finite size one-dimensional coupled resonator nonlinear optical waveguide has been investigated. To calculate the bistable switching manner in five proposed structures, we use the linear and nonlinear transfer matrices with fixed point iteration method. Our results show that the threshold and domain of bistable switching answer depend on the defect region in one-dimensional coupled resonator nonlinear optical waveguides. Also, the best answer of switch takes place at the left and right edges of the photonic band gap of the structures depending on the defect regions. In fact, due to the presence of the photonic band gap in the slow wave system, the density of states of the electromagnetic fields is large at the photonic band edge and photonic defect modes and thus the group velocity is small, and the local field is enhanced. All these factors contribute to a significant decrease in the threshold of optical bistable switching devices.

Finite Element Analysis of Optical Bistability in One-Dimensional Nonlinear Photonic Band Gap Structures with a Defect

2003 ◽  
Vol 12 (02) ◽  
pp. 187-204 ◽  
Author(s):  
A. Suryanto ◽  
E. van Groesen ◽  
M. Hammer
Keyword(s):  
Finite Element ◽  
Optical Bistability ◽  
Photonic Band Gap ◽  
Incident Light ◽  
Input Parameter ◽  
Element Analysis ◽  
One Dimensional ◽  
Quarter Wave ◽  
Photonic Band Gap Structures ◽  
Unstable Solutions

We present a new approach based on the recently reported finite element scheme16 to study the optical response of a finite one-dimensional nonlinear grating. Using the transmitted wave amplitude as a numerical input parameter, we are able to find all stable and unstable solutions related to a specific incident wave which build up the complete bistability curve. The method is applied to investigate the optical bistability in a nonlinear quarter-wave reflector with a defect. With a proper choice of the incident light frequency, a very low bistability threshold is predicted for an optimized defect structure.

Optical bistability by nonlinear reflection in a polymeric blend

1996 ◽  
Vol 63 (2) ◽  
pp. 155-159 ◽  
Author(s):  
U. Bernini ◽  
L. De Stefano ◽  
M. Feo ◽  
P. Mormile ◽  
P. Russo
Keyword(s):  
Optical Bistability ◽  
Nonlinear Reflection ◽  
Polymeric Blend

scholarly journals Subluminal and superluminal light pulse propagation under external magnetic field in a vee-type three-level atomic medium

2021 ◽  
Vol 13 (1) ◽  
pp. 4
Author(s):  
Thai Doan Thanh ◽  
Nguyen Tuan Anh ◽  
Nguyen Thi Thu Hien ◽  
Hoang Minh Dong ◽  
Nguyen Xuan Hao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Optical Switching ◽  
Optical Bistability ◽  
Light Propagation ◽  
Pulse Propagation ◽  
Electromagnetically Induced Transparency ◽  
Kerr Nonlinearity ◽  
Atomic Medium ◽  
Induced Transparency

In this work, we investigate subluminal and superluminal light propagation in a vee-type three-level atomic medium under an external magnetic field. The dispersion and absorption behaviors are studied for the cases of absence and presence of a magnetic field. It is found that under an electromagnetically induced transparency condition, the light pulse can be switched between subluminal and superluminal propagation by ON-OFF switching of the magnetic field. Finally, the transient response of the medium is discussed, which shows that the considered scheme has potential applications in magneto-optic switching devices. Full Text: PDF ReferencesBoller K J, Imamoglu A, Harris S E, "Observation of electromagnetically induced transparency", Phys. Rev. Lett. 66 (1991) 2593. CrossRef Fleischhauer M, Imamoglu A, Marangos J P, "Electromagnetically induced transparency: Optics in coherent media", Rev. Mod. Phys. 77 (2005) 633. CrossRef L.V. Hau, S. E. Harris, Z. Dutton, C.H. Bejroozi, "Light speed reduction to 17 metres per second in an ultracold atomic gas", Nature, 397 (1999) 594. CrossRef Z. Dutton, N.G.C. Slowe, L.V. Hau, "The art of taming light: ultra-slow and stopped light", Europhysics News, 35 (2004) 33. CrossRef V. Bharti, V. Natarajan, "Sub- and super-luminal light propagation using a Rydberg state", Opt. Commun. 392 (2017) 180-184. CrossRef Khoa D X, Doai L V, Son D H and Bang N H, "Enhancement of self-Kerr nonlinearity via electromagnetically induced transparency in a five-level cascade system: an analytical approach", J. Opt. Soc. Am. B. 31 (2014) 1330. CrossRef Hamedi H R, Gharamaleki A H, and Sahrai M, "Colossal Kerr nonlinearity based on electromagnetically induced transparency in a five-level double-ladder atomic system", Appl. Opt 22 (2016) 5892. CrossRef A. Fountoulakis, A.F. Terzis, E. Paspalakis, "All-optical modulation based on electromagnetically induced transparency", Phys. Lett. A 374, (2010) 3354. CrossRef Khoa D X, Doai L V, Mai Anh L. N, Trung L. C, Thuan P. V, Dung N. T, and Bang N. H, J. "Optical bistability in a five-level cascade EIT medium: an analytical approach", Opt. Soc. Am. B, 33 (2016) 735. CrossRef Hoang Minh Dong, and Nguyen Huy Bang, "Controllable optical switching in a closed-loop three-level lambda system", Phy. Scr. 94, (2019) 115510. CrossRef Dong H M, Doai L V, Sau V N, Khoa D X and Bang N H, "Propagation of a laser pulse in a three-level cascade atomic medium under conditions of electromagnetically induced transparency", Photonics Letter of Poland, 3 (2016) 73. CrossRef Khoa D X, Dong H M, Doai L V and Bang N H, "Propagation of laser pulse in a three-level cascade inhomogeneously broadened medium under electromagnetically induced transparency conditions", Optik 131 (2017) 497. CrossRef H. M. Dong, L.V. Doai, and N.H. Bang, "Pulse propagation in an atomic medium under spontaneously generated coherence, incoherent pumping, and relative laser phase", Opt. Commun. 426 (2018) 553-557. CrossRef Jiahua Li, Rong Yu, Liugang Si, and Xiaoxue Yang, "Propagation of twin light pulses under magneto-optical switching operations in a four-level inverted-Y atomic medium", J. Phys. B: At. Mol. Opt. Phys. 43 (2010) 065502. CrossRef S. H. Asadpour, H. R. Soleimani, "Polarization dependence of optical bistability in the presence of external magnetic field", Opt. Commun 310 (2014) 120-124. CrossRef H.M. Dong, L.T.Y. Nga, and N.H. Bang, "Optical switching and bistability in a degenerated two-level atomic medium under an external magnetic field", App. Opt. 58, (2019) 4192. CrossRef H. M. Dong, L. T. Y. Nga, D. X. Khoa, N. H. Bang, "Controllable ultraslow optical solitons in a degenerated two-level atomic medium under EIT assisted by a magnetic field", Sci. Rep. 10 (2020) 15298. CrossRef Daniel A. Steck, "Rubidium 87D Line Data," http://steck.us/alkalidata. CrossRef

scholarly journals Tunable Optical Bistability, Tristability and Multistability in Arrays of Graphene

2020 ◽  
Vol 10 (17) ◽  
pp. 5766
Author(s):  
Xiuju Zhao ◽  
Bin Xu ◽  
Xiangna Kong ◽  
Dong Zhong ◽  
Ming Fang ◽  
...  
Keyword(s):  
Optical Bistability ◽  
Chemical Potential ◽  
Incident Light ◽  
Logic Gates ◽  
Optical Switches ◽  
Optical Logic ◽  
Incident Intensity ◽  
Incident Wavelength ◽  
All Optical ◽  
Potential Applications

The optical bistability, tristability and multistability are explored in arrays of graphene. The arrays are periodically arranged spatially by single sheets of graphene. Optical bistability could be achieved with a strong enough incident intensity of light wave. The thresholds of optical bistability and the intervals between the upper and lower thresholds change with the surface conductivity of graphene and the incident wavelength. By increasing the intensity of incident light, tristability and multistability can be induced as well. Furthermore, the thresholds of bistability, tristability and multistability can be regulated via the chemical potential of graphene. This study may have potential applications in optical logic gates, all-optical switches and photomemory.

LIQUID PHASE OXIDATION GROWN MISM AND MISIM SWITCHES BY GaAs NATIVE OXIDES

2006 ◽  
Vol 20 (26) ◽  
pp. 1661-1668
Author(s):  
KAO-FENG YARN
Keyword(s):  
Liquid Phase ◽  
Incident Light ◽  
Voltage Control ◽  
Liquid Phase Oxidation ◽  
Oxide Semiconductor ◽  
Native Oxide ◽  
Light Power ◽  
Native Oxides ◽  
Bistable Switching ◽  
Phase Oxidation

Experimental predictions have been made for two-state bistable switching in both metal- GaAs native oxide-semiconductor-metal (MISM) and metal- GaAs native oxide-semiconductor- GaAs native oxide-metal (MISIM) structures for the first time, where the GaAs native oxides are formed by the liquid phase oxidation method. Bidirectional two-state switching (DIAC-like) and three-terminal operation are also shown in the photo-sensitive MISIM structure. Typical switching voltages for GaAs MISM and MISIM switches under 4 nm-thick native oxides are 7 V and 15 V, respectively. The corresponding voltage control efficiencies for MISM and MISIM switches are also as high as 3.944 and 7.04. The corresponding variation in voltage control efficiency, Δη=ΔVS/VH, is also as high as 2.5 at 150 nW incident light power.

scholarly journals Cross-Kerr nonlinearity: a stability analysis

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Roope Sarala ◽  
Francesco Massel
Keyword(s):  
Radiation Pressure ◽  
Optical Bistability ◽  
Kerr Nonlinearity ◽  
Pressure Force ◽  
Nanomechanical Resonator ◽  
Pure Radiation ◽  
Bistable Region ◽  
The Cross ◽  
Unstable Branch ◽  
Radiation Pressure Force

AbstractWe analyse the combined effect of the radiation-pressure and cross-Kerr nonlinearity on the stationary solution of the dynamics of a nanomechanical resonator interacting with an electromagnetic cavity. Within this setup,we show how the optical bistability picture induced by the radiation-pressure force is modi fied by the presence of the cross-Kerr interaction term. More specifically, we show how the optically bistable region, characterising the pure radiation-pressure case, is reduced by the presence of a cross-Kerr coupling term. At the same time, the upper unstable branch is extended by the presence of a moderate cross-Kerr term, while it is reduced for larger values of the cross-Kerr coupling.

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