Origin of second-order nonlinear optical response of polarity-controlled ZnO films

Park, J. S.; Yamazaki, Yoshiki; Takahashi, Y.; Hong, Soon–Ku; Chang, Jiho; Fujiwara, Takeshi; Yao, Takafumi

doi:10.1063/1.3152773

Cited by 16 publications

(10 citation statements)

References 18 publications

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“…Second order nonlinear optical response has been experimentally demonstrated from ZnO films grown by pulsed laser ablation [19], spray pyrolysis [20][21], laser deposition [22], reactive sputtering [23] as well as self-assembling by Laser-MBE [24][25], metalorganic chemical vapour deposition [26], dual ion beam sputtering [27][28], rf magnetron sputtering [29][30][31][32], metal organic aerosol deposition [33], gas transport reaction technique [34], plasma assisted molecular beam epitaxy [35]. Furthermore, a reduced number of works report on third harmonic generation from ZnO nanocrystalline films [28,30,[36][37][38][39][40].…”

Section: Shg In Zno Thin Filmsmentioning

confidence: 99%

“…In addition to the different deposition techniques, also a large variety of materials was successfully employed as substrates. The most commonly used are sapphire [23][24][25][26][33][34][35] and glass [20-21, 23, 27-28], since they do not give bulk contribute to the second harmonic signal. The possibility, explored in some works, to get second order nonlinear optical response from ZnO films grown on silicon substrate is particularly attractive since it is expected to offer the further advantage to integrate ZnO with the Si-based microelectronics devices [13,29,[31][32].…”

Section: Shg In Zno Thin Filmsmentioning

confidence: 99%

See 1 more Smart Citation

Second harmonic generation from ZnO films and nanostructures

Larciprete¹,

Centini²

2015

Applied Physics Reviews

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Zinc oxide ZnO is a n-type semiconductor having a wide direct band gap (3.37 eV) as well as a\ud non-centrosymmetric crystal structure resulting from hexagonal wurtzite phase. Its wide transparency\ud range along with its second order nonlinear optical properties make it a promising material\ud for efficient second harmonic generation processes and nonlinear optical applications in general. In\ud this review, we present an extensive analysis of second harmonic generation from ZnO films and\ud nanostructures. The literature survey on ZnO films will include some significant features affecting\ud second harmonic generation efficiency, as crystalline structure, film thickness, surface contributes,\ud and doping. In a different section, the most prominent challenges in harmonic generation from ZnO\ud nanostructures are discussed, including ZnO nanowires, nanorods, and nanocrystals, to name a few.\ud Similarly, the most relevant works regarding third harmonic generation from ZnO films and nanostructures\ud are separately addressed. Finally, the conclusion part summarizes the current standing of\ud published values for the nonlinear optical coefficients and for ZnO films and nanostructures,\ud respectively

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Section: Shg In Zno Thin Filmsmentioning

confidence: 99%

Section: Shg In Zno Thin Filmsmentioning

confidence: 99%

Second harmonic generation from ZnO films and nanostructures

Larciprete¹,

Centini²

2015

Applied Physics Reviews

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“…The group of T. Yao in Sendai investigated SHG in polarity controlled ZnO in dependence on grain size and surface roughness [190]. They found strongly increasing nonlinear optical coefϐicient d eff with decreasing grain size and for surface roughness R rms below 2 nm.…”

Section: Second Harmonic Generationmentioning

confidence: 99%

Fabrication of ZnO Nanostructures

2014

Zinc Oxide Nanostructures

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The current state of optical properties of ZnO-based nanostructures is discussed in terms of optical recombination, of bandgap engineering and of nanoheterostructures such as core-shell quantum wells and quantum dots. Whispering gallery and Fabry-Perot modes are reviewed in the section on cavity effects, together with regular and random lasing in ZnO nanostructures. First results on Raman and infrared spectroscopy of nanostructures are listed. Promising optical device applications of ZnO nanowires include electrically pumped lasing arrays, photodetectors, and second harmonic generation.

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“…Moreover, the optical nonlinearities in ZnO low‐dimensional quantum structures have been studied . For example, very strong second‐harmonic‐generation (

\sim

pm/V) and third‐harmonic‐ generation (

\sim 10^{- 18}

m 2 V −2 ) susceptibilities have been observed in ZnO thin film structures . These results reveal that the surface and excitonic effects enhance greatly the nonlinear susceptibilities.…”

Section: Introductionmentioning

confidence: 97%

“…On the other hand, it is well‐known that the linear and nonlinear optical procedures, such as optical absorption and harmonic generation, are important and notable optical phenomena, especial in quantum‐confined systems and in the case of strong incident light intensity . Moreover, the optical nonlinearities in ZnO low‐dimensional quantum structures have been studied . For example, very strong second‐harmonic‐generation (

\sim

pm/V) and third‐harmonic‐ generation (

\sim 10^{- 18}

m 2 V −2 ) susceptibilities have been observed in ZnO thin film structures .…”

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear optical absorption of excitonic states in a wurtzite ZnO nanowire: Quantum size effect

Zhang

Guo

Xie

2013

Phys. Status Solidi B

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Taking into account the anisotropic confined situations of quasi‐one‐dimensional (Q1D) nanowires (NWs) in free axial‐ and confined radial directions and the anisotropic wurtzite ZnO crystal, a two‐parameter variational approach is brought forward and applied to investigate the luminous properties of excitonic states and their optical absorption features in wurtzite ZnO NW systems. The quantum size effects on the excitonic binding energies of the ground state and the first excited excitons as well as the linear and nonlinear absorption coefficients are analyzed in detail. Numerical calculations on a freestanding ZnO NW are performed. The calculated excitonic binding energies in the wurtzite ZnO NWs are far larger than those in cubic GaAs‐based quantum wires and NWs with the same radius. This is mainly ascribed to the large effective masses of electron and hole and the relatively small dielectric constants in ZnO semiconductor. The calculated results show that the nonlinear and the total absorption coefficients take their maximum as the NW radius is smaller than one Bohr radius of exciton (∼2.0 nm) in ZnO bulk semiconductor. Moreover, the narrower the radius of the ZnO NWs (<2.5 nm), the greater the blue‐shift of the resonant photon energies of the absorption coefficients. The numerical results also show that the two‐parameter variational approach is reasonable and necessary for the description of excitonic states and their optical absorptions in Q1D wurtzite ZnO NWs.

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Origin of second-order nonlinear optical response of polarity-controlled ZnO films

Cited by 16 publications

References 18 publications

Second harmonic generation from ZnO films and nanostructures

Second harmonic generation from ZnO films and nanostructures

Fabrication of ZnO Nanostructures

Linear and nonlinear optical absorption of excitonic states in a wurtzite ZnO nanowire: Quantum size effect

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