Modification of cubic susceptibility tensor in birefringent porous silicon

Zabotnov, S. V.; Konorov, S. O.; Golovan, L. A.; Федотов, А. Б.; Timoshenko, V. Yu.; Желтиков, А. М.; Кашкаров, П. К.

doi:10.1002/pssa.200461220

Cited by 13 publications

(4 citation statements)

References 13 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the electrostatic model (2) cannot explain the rise of the effective cubic susceptibility in por-Si in comparison with c-Si. Thus, the observed effect seems to be similar to the one found for THG in birefringent mesoporous Si [7]: both χ (3) (ω; ω, −ω, ω) and χ (3) (3ω; ω, ω, ω) cubic susceptibilities for por-Si significantly exceed ones for c-Si and, although the electrostatic effective-medium approximation successfully de-scribes birefringence of mesoporous Si, the nonlinearoptical anisotropy agrees to the predictions based on the effective-medium model only qualitatively. The possible explanation can be connected with the light-localization effects caused by interference of the waves reflected and scattered at the silicon nanoparticles and pores [6,7].…”

Section: Resultssupporting

confidence: 84%

“…Microporous Si with the pores of less than 2 nm in diameter exhibits bright visible photoluminescence caused by a quantum-size effect [3]. It was also reported the in- creased efficiency of cubic nonlinear-optical interaction in por-Si detected in microporous Si by z-scan technique [4,5], and in mesoporous Si by the third-harmonic generation (THG) [6,7]. Note that in the latter material typical pore sizes range from 2 to 100 nm.…”

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

Enhancement of two-photon absorption in anisotropic mesoporous silicon

et al. 2008

View full text Add to dashboard Cite

Abstract:In experiments on nonlinear-optical transmission of picosecond laser pulses at the wavelength of 1.064 μm threeorder-of-magnitude enhancement of the photoinduced absorption in optically anisotropic mesoporous silicon films compared to crystalline silicon (c-Si) was found. The effect is not sensitive to the polarization of the laser radiation and it saturates at laser peak intensities about 5 MW/cm 2 . Higher laser intensity results in the polarization-sensitive photoinduced absorption, which is merely one-order-of-magnitude more effective than in c-Si. These efficient nonlinear-optical responses can be attributed to the resonant excitation of the defect states in the direct gap of silicon and local-field enhancement in the mesoporous films. Total transmittance of the birefringent mesoporous silicon film versus the laser intensity for the sample of 49% porosity. The crystallographic direction [001] corresponds to the optical axis

show abstract

Section: Resultssupporting

confidence: 84%

Section: Introductionmentioning

confidence: 93%

Enhancement of two-photon absorption in anisotropic mesoporous silicon

et al. 2008

View full text Add to dashboard Cite

show abstract

“…(6)). In the experiment the fundamental wavelength ranging from 1.1 to 1.5 m (out of the phase-matching region, see below) TH signal polarized along 110 axis was registered in transition geometry with pumping polarized along [001] and 110 64. Experimentally obtained ratio of the TH signals allowed finding the 3 eff component ratio r = 3333 (the phase mismatch was taken into account).…”

mentioning

confidence: 99%

Nonlinear-Optical Properties of Porous Silicon Nanostructures

Golovan¹,

Timoshenko²

2013

Journal of Nanoelectronics and Optoelectronics

View full text Add to dashboard Cite

In the present review, we consider in detail nonlinear-optical properties of porous silicon. The nonlinear-optical properties of porous silicon are discussed in close connection with its linear optical properties. Such coherent nonlinear-optical processes as the second-and third harmonic generation are considered, with special interest to the variations of the nonlinear susceptibility tensor, phase matching in the birefringent porous silicon, and effect of the photonic crystals. Incoherent nonlinear-optical processes as nonlinear refraction, optical bleaching, and two-photon absorption are also reviewed, the different mechanisms responsible for them are discussed.

show abstract

“…A similar anisotropy has been studied earlier in detail for the initial PS films. 22,23 To verify the above findings, we used a Cr:forsterite laser generating 50-fs pulses at a center wavelength of 1250 nm ͑Ref. 24͒ to measure the third-harmonic ͑TH͒ signal generated in OPS structures.…”

mentioning

confidence: 94%

Form birefringence of oxidized porous silicon

Golovan

Ivanov

Melnikov

et al. 2006

Applied Physics Letters

View full text Add to dashboard Cite

A network of preferentially oriented pores is shown to induce anisotropy of linear and nonlinear optical properties of oxidized porous silicon ͑OPS͒ films. Although the x-ray diffraction indicates the presence of amorphous phase in OPS samples, the near-infrared and visible transmission measurements reveal a strong in-plane anisotropy exceeding that for the crystalline quartz. This anisotropy modifies dramatically polarization properties of the nonlinear optical properties resulting in a strong anisotropy of the third-harmonic signal generated from these films.

show abstract

Modification of cubic susceptibility tensor in birefringent porous silicon

Cited by 13 publications

References 13 publications

Enhancement of two-photon absorption in anisotropic mesoporous silicon

Enhancement of two-photon absorption in anisotropic mesoporous silicon

Nonlinear-Optical Properties of Porous Silicon Nanostructures

Form birefringence of oxidized porous silicon

Contact Info

Product

Resources

About