Controlled optical bistability switching in a diode-pumped Tm,Ho:LLF laser

Zhang, X L; Yu, Long; Zhang, S; Li, L; Zhao, Jiupeng; Jing-zhong, Cui; Dong, Guang-Zong; Wang, R

doi:10.1088/1612-2011/10/12/125801

Cited by 11 publications

(4 citation statements)

References 23 publications

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“…Such optical bistable behaviour arises from the nonlinear interaction between a collection of two-level atoms and the field inside an optical cavity. The nonlinear optical processes related to the quantum coherence have shown their great potential in possible optoelectronic applications, such as optical buffers and modulators based on the slow-light phenomenon [33][34][35][36], all-optical switches based on optical bistability (OB) and optical multistability (OM) [37][38][39][40] and highly efficient frequency conversion in an ultra slow propagation regime [41,42]. Moreover, electromagnetically induced transparency (EIT) [43][44][45][46] may lead to great enhancement in nonlinear effects and steep dispersion, as well as to the reduction of group velocity, the storage of optical pulses [47,48] and controlling the intensity threshold of optical bistability [49].…”

Section: Laser Physics Lettersmentioning

confidence: 99%

A quintuple quantum dot system for electrical and optical control of multi/bistability in a telecommunication window

Mehmannavaz

Sattari

2015

Laser Phys. Lett.

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We propose a model for a quintuple coupled quantum dot system based on a GaAs/AlGaAs heterostructure. Then, we analyze the optical bistability (OB) and optical multistability (OM) behaviours and transition between the regimes at a wavelength of λ μ = 1.550 m. We take the benefit of consecutive and parallel interdot tunnelling and an incoherent pumping field for electrical and even optical control of the processes. It is shown that OB, OM and transition between them can be accomplished and controlled by adjusting the rate of the inter-dot tunnellings (electrical bias), probe wavelength detuning and rate of the optical incoherent pumping field. By proper choice of the controlling parameters, the bistable hysteresis loop becomes narrower, which makes it easier for the cavity field to reach saturation. We interpret the OB and OM behaviours by discussing the absorption of the active medium. We also investigate switching time between the two stable states when the output field jumps from a lower branch to an upper branch. Such a controllable OB/OM and transition between them in multiple QD molecules at a wavelength of 1.550 μm, may provide some new possibilities for technological applications in optoelectronics, solid-state quantum information science and systems dealing with signal processing.

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Section: Laser Physics Lettersmentioning

confidence: 99%

A quintuple quantum dot system for electrical and optical control of multi/bistability in a telecommunication window

Mehmannavaz

Sattari

2015

Laser Phys. Lett.

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“…The fundamental mechanism for controlling the linear and nonlinear response of the medium is quantum coherence and quantum interference. Quantum coherence and interference in multilevel atomic systems can lead to many interesting optical phenomena, such as electromagnetically induced transparency (EIT) [1,2], lasing without inversion [3,4], optical soliton [5], atom localization [6,7], giant Kerr nonlinearity [8][9][10][11][12], multi-wave mixing [13][14][15][16], controlling optical bi /multistability [17][18][19][20][21][22][23][24][25][26] and so on [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Behavior of optical bistability in multifold quantum dot molecules

Hamedi

Mehmannavaz

2015

Laser Phys.

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We analyze the optical bistability (OB) behavior in a multifold quantum dot (QD) molecule composed of five quantum dots controlled by the tunneling coupling. It is shown that the optical bistability can strongly be affected by the tunneling inter-dot coupling coefficients as well as detuning parameters. In addition, we find that the rate of an incoherent pump field has a leading role in modification of the OB threshold. We then generalize our analysis to the case of multifold quantum dot molecules where the number of the quantum dots is N (with a center dot and − N 1 satellite dots). We compare the OB features that could occur in a multifold QD system consist of three ( = N 3), four ( = N 4), and five (N = 5) quantum dots. We realize that the OB threshold increases as the number of satellite QDs increases. Such controllable optical bistability in multiple QD molecules may provide some new possibilities for technological applications in optoelectronics and solid-state quantum information science.

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“…During the last decade, there has been a great deal of interest in optical bistability (OB) and optical multistability (OM) as effects that can be used for optical computing. Many schemes [1][2][3][4] have been investigated based on atomic coherence and quantum interference effects to investigate OB and OM behaviors. In fact, atomic coherence and quantum interference can lead to some interesting phenomena such as four-wave mixing (FWM) [5][6][7][8], optical solution [9], electromagnetically induced transparency (EIT) [10][11][12], superluminal and subluminal propagation of light [13], atom localization [14,15], giant Kerr nonlinearity [16][17][18][19][20], and optical bistability (OB) [21][22][23][24][25][26][27], among others [28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Optical bistability via Josephson coupling energy in a superconducting quantum circuit

Hamedi¹

2014

Laser Phys.

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A novel configuration is proposed to study optical bistability (OB) and optical multistability (OM) in a superconducting quantum circuit with a tunable V-type artificial molecule constructed by two superconducting Josephson charge qubits coupled with each other through a superconducting quantum interference device. We find that the ratio of the Josephson coupling energy to the capacitive coupling strength has a significant impact on creating optical bistability. The influence of other system parameters on bistable behavior of the artificial medium is then discussed. In particular, it is found that applying an incoherent pumping field can noticeably reduce the bistable threshold. We also realize a switch from OB to OM through proper tuning of detuning parameters. The controllability of OB and OM of this artificial molecule may be useful in building logic-gate devices for optical computing and quantum information processing and provide some new possibilities for solid-state quantum information science.

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Controlled optical bistability switching in a diode-pumped Tm,Ho:LLF laser

Cited by 11 publications

References 23 publications

A quintuple quantum dot system for electrical and optical control of multi/bistability in a telecommunication window

A quintuple quantum dot system for electrical and optical control of multi/bistability in a telecommunication window

Behavior of optical bistability in multifold quantum dot molecules

Optical bistability via Josephson coupling energy in a superconducting quantum circuit

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