Highly nonlinear Ge-As-Se and Ge-As-S-Se glasses for all-optical switching

Harbold, Jeffrey M.; Ilday, F. Ö.; Wise, Frank W.; Aitken, B. G.

doi:10.1109/lpt.2002.1003105

Cited by 172 publications

(86 citation statements)

References 13 publications

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“…That is, the semiconductor concept seems to be applied as a rough approximation to glasses and amorphous films. 1/E g 3 , with experimental data for non-crystalline solids [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Here, for most of the materials with E g ≳ 2 eV, we see rough agreements.…”

Section: Comparisonsupporting

confidence: 69%

“…In a similar way, we see that βn 0 2 /(KE p 1/2 F) ≈ 10 3 , which leads to β ≈ 10 1 cm/GW. These values have been obtained in chalcogenide glasses with E g ≈1.8 eV, such as As 2 Se 3 [22,[24][25][26] and Ge-As-Se [22,[27][28][29].…”

Section: Maximal Nonlinearitymentioning

confidence: 78%

“…2 compares the theoretical nonlinear spectra, G and F, with reported n 2 and β values [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] for non-crystalline solids. For some materials, data obtained at different ħω are included.…”

Section: Comparisonmentioning

confidence: 99%

See 2 more Smart Citations

Nonlinear optics in glasses: How can we analyze?

Tanaka

2007

Journal of Physics and Chemistry of Solids

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Maximal optical nonlinearity obtainable in amorphous materials at telecommunication wavelengths of ~1.5 μm is predicted. Applying a semiconductor concept, we suggest that nonlinear properties become greater in the materials with smaller optical gaps. This trend makes the chalcogenide glass such as As 2 Se 3 promising for fiber devices (~1 m) including optical switches, intensity stabilizers, and stimulated Raman amplifiers. However, for integrated devices with optical path lengths of ~1 cm, greater nonlinearity is needed.

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Section: Comparisonsupporting

confidence: 69%

Section: Maximal Nonlinearitymentioning

confidence: 78%

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Nonlinear optics in glasses: How can we analyze?

Tanaka

2007

Journal of Physics and Chemistry of Solids

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“…Amorphous chalcogenide glasses (ChGs) have emerged as promising candidates for all-photonic devices due to their high Kerr and third-order optical non-linearities that are two to three orders of magnitude greater than silica. 9,10 Apart from this, ChG also exhibits unique light-induced effects of fundamental interest like photoexpansion, 11 photofluidity, 12 which makes them versatile platforms for optoelectronics, waveguide writing, patterning, and nanofabrication. [13][14][15] In ChG, Kolomiets et al 16 and Matsuda et al 17 have demonstrated the transient change in photocurrent.…”

mentioning

confidence: 99%

Ultrafast defect dynamics: A new approach to all optical broadband switching employing amorphous selenium thin films

et al. 2015

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Optical switches offer higher switching speeds than electronics, however, in most cases utilizing the interband transitions of the active medium for switching. As a result, the signal suffers heavy losses. In this article, we demonstrate a simple and yet efficient ultrafast broadband all-optical switching on ps timescale in the sub-bandgap region of the a-Se thin film, where the intrinsic absorption is very weak. The optical switching is attributed to short-lived transient defects that form localized states in the bandgap and possess a large electron-phonon coupling. We model these processes through first principles simulation that are in agreement with the experiments.

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“…According to Miller's formula [47], the higher the refractive index of a material, the higher its nonlinear coefficient n2. As a consequence, the third-order Kerr effect of chalcogenide is several thousand times higher than that of silica [48][49][50], which means that chalcogenide glasses are considered excellent media for all-optical signal processing [41].…”

Section: Chalcogenide Glassmentioning

confidence: 99%

Compound Glass Microsphere Resonator Devices

Yu¹,

Lewis²,

Farrell³

et al. 2018

Preprint

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Abstract:In recent years, compound glass microsphere resonator devices have attracted increasing interest and have been widely used in sensing, microsphere lasers, and nonlinear optics. Compared with traditional silica resonators, compound glass microsphere resonators have many significant and attractive properties, such as high-Q factor, an ability to achieve high rare earth ion, wide infrared transmittance and low phonon energy. This review provides a summary and a critical assessment of the fabrication and the optical characterization of compound glasses and the related fabrication and applications of compound glass microsphere resonators.

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Highly nonlinear Ge-As-Se and Ge-As-S-Se glasses for all-optical switching

Cited by 172 publications

References 13 publications

Nonlinear optics in glasses: How can we analyze?

Nonlinear optics in glasses: How can we analyze?

Ultrafast defect dynamics: A new approach to all optical broadband switching employing amorphous selenium thin films

Compound Glass Microsphere Resonator Devices

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