Parameter-dependent third-order optical nonlinearity in a CdSe/ZnS quantum dot quantum well in the vicinity of a gold nanoparticle

Theoretical investigation of the polaron effects on the third-order susceptibility associated with the intersubband transition in the conduction band in a CdSe/ZnS quantum dot quantum well is presented. Contributions from the confined longitudinal optical (LO) and surface optical phonon modes are considered and the wave function is derived under the frame work of the perturbation theory. We carried a detailed calculation of third-harmonic generation (THG), Quadratic electro-optic effects (QEOE), and electro-absorption (EA) process on such a quantum dot as a function of pump photon energy with different incident photon energy and under different sizes. The results reveal that the polaron effects are quite important especially around the peak value of the third-order susceptibility. By increasing the size of the quantum dots, the peaks of χ(3)THG, χ(3)QEOE, and χ(3)EA will shift to the lower energy, and the intensities of the peaks will increase.

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Polaron effect-dependent third-order optical susceptibility in a ZnS/CdSe quantum dot quantum well

Microelectronics Journal ◽

10.1016/j.mejo.2008.02.016 ◽

2008 ◽

Vol 39 (12) ◽

pp. 1654-1658 ◽

Cited By ~ 4

Author(s):

Zhihong Chen ◽

Duanzheng Yao ◽

Xi Zhang ◽

Tianhong Fang

Keyword(s):

Quantum Dot ◽

Quantum Well ◽

Third Order ◽

Polaron Effect ◽

Optical Susceptibility ◽

Cdse Quantum Dot

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Parameter-dependent photon echo induced in CdSe/ZnS quantum dot quantum well

Physics Letters A ◽

10.1016/j.physleta.2008.01.033 ◽

2008 ◽

Vol 372 (18) ◽

pp. 3325-3332 ◽

Cited By ~ 9

Author(s):

Shaohua Gong ◽

Duanzheng Yao ◽

Hongliang Jiang ◽

Hua Xiao

Keyword(s):

Quantum Dot ◽

Quantum Well ◽

Photon Echo ◽

Parameter Dependent

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Third-Order Optical Nonlinearity Due to Excitons and Biexcitons in a Self-Organized Quantum-Well Material (C6H13NH3)2PbI4

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863598000120 ◽

1998 ◽

Vol 07 (01) ◽

pp. 153-159 ◽

Cited By ~ 21

Author(s):

J. Ishi ◽

M. Mizuno ◽

H. Kunugita ◽

K. Ema ◽

S. Iwamoto ◽

...

Keyword(s):

Quantum Well ◽

Optical Nonlinearity ◽

Four Wave Mixing ◽

Wave Mixing ◽

Exciton Resonance ◽

Third Order ◽

Self Organized ◽

Spectrally Resolved

Third-order optical nonlinearity around the exciton resonance in (C6H13NH3)2PbI4 was measured using time-integrated and spectrally-resolved four-wave-mixing (FWM) techniques. For excitation below the exciton resonance, biexciton contribution to the FWM signals was observed. The dephasing energy of the biexcitons was estimated to be larger than 10 meV.

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Optical Conduction Resonance in Self-Assembled Metal Nanoparticle Array-Dielectric Thin Films

Journal of Nanomaterials ◽

10.1155/2018/8540805 ◽

2018 ◽

Vol 2018 ◽

pp. 1-9

Author(s):

Liangmin Zhang

Keyword(s):

Thin Films ◽

Gold Nanoparticles ◽

Gold Nanoparticle ◽

Volume Fraction ◽

Optical Nonlinearity ◽

Metal Nanoparticle ◽

Interparticle Spacing ◽

Nanoparticle Array ◽

Third Order ◽

Dielectric Thin Films

Optical conduction resonance- (OCR-) enhanced third-order optical nonlinearity of two dimensional (2D) periodic gold nanoparticle array-dielectric thin films has been investigated. The third-order optical susceptibility of periodic gold nanoparticle array embedded in silica thin film shows ~104 enhancement comparing to gold nanoparticle colloids. The 2D gold nanoparticle arrays were synthesized by using the electrostatic self-assembly (ESA) technique. During the fabrication process, the positively or negatively functionalized gold nanoparticles are automatically self-aligned to establish a 2D array with a very small interparticle spacing due to the polymer shell on the metal particles. Then, a monolayer of silica can be coated on the top of the 2D metal nanoparticle array. This type of 2D gold nanoparticle array-dielectric thin films has high volume fraction of gold nanoparticles. According to the extended Maxwell-Garnett theory, this kind of films can exhibit OCR. The OCR frequency can be tuned from visible to mid-infrared by controlling the gold nanoparticle volume fraction. During OCR, the real part of the composite dielectric constant is zero to make the induced electromagnetic waves in gold nanoparticles to couple effectively within the film. The open-aperture z-scan technique is used to measure the nonlinear optical properties of the ESA films.

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