Influence of scattering and two-photon absorption on the optical loss in GaAs/Al2O3 nonlinear waveguides measured using femtosecond pulses

S Venugopal Rao; K Moutzouris; Majid Ebrahimzadeh; A De Rossi; M Calligaro; V Ortiz; G Ginitz; V Berger

doi:10.1109/JQE.2002.808173

Influence of scattering and two-photon absorption on the optical loss in GaAs/Al2O3 nonlinear waveguides measured using femtosecond pulses

S Venugopal Rao, K Moutzouris, Majid Ebrahimzadeh, A De Rossi, M Calligaro, V Ortiz, G Ginitz, V Berger

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The influence of scattering and two-photon absorption on the optical loss in GaAs-Al2O3 semiconductor nonlinear waveguides has been studied using femtosecond pulses. By deploying a scattering technique, loss coefficients were evaluated over an extended wavelength range of 1.3-2.1 mum in the near-infrared. A systematic study involving intensity and wavelength dependence of the loss revealed the presence of two-photon absorption for wavelengths below 1.6 mum. A simple nonlinear transmission study enabled the separation of the two-photon absorption coefficient from scattering and linear absorption. The calculated two-photon absorption coefficients were similar to9-20 cm/GW.

Original language	English
Pages (from-to)	478-486
Number of pages	9
Journal	IEEE Journal of Quantum Electronics
Volume	39
DOIs	https://doi.org/10.1109/JQE.2002.808173
Publication status	Published - Mar 2003

Keywords

nonlinear frequency conversion
optical losses
scattering technique
semiconductor waveguides
two-photon absorption
GUIDE LOSS-MEASUREMENT
PLANAR WAVE-GUIDES
FABRY-PEROT METHOD
PROPAGATION LOSS
BAND-GAP
REFRACTIVE-INDEX
PARAMETRIC FLUORESCENCE
2-PHOTON ABSORPTION
GAAS
ALGAAS

Access to Document

10.1109/JQE.2002.808173

Cite this

@article{d5d35e4f752c456bbc3ec3349526ba8d,

title = "Influence of scattering and two-photon absorption on the optical loss in GaAs/Al2O3 nonlinear waveguides measured using femtosecond pulses",

abstract = "The influence of scattering and two-photon absorption on the optical loss in GaAs-Al2O3 semiconductor nonlinear waveguides has been studied using femtosecond pulses. By deploying a scattering technique, loss coefficients were evaluated over an extended wavelength range of 1.3-2.1 mum in the near-infrared. A systematic study involving intensity and wavelength dependence of the loss revealed the presence of two-photon absorption for wavelengths below 1.6 mum. A simple nonlinear transmission study enabled the separation of the two-photon absorption coefficient from scattering and linear absorption. The calculated two-photon absorption coefficients were similar to9-20 cm/GW.",

keywords = "nonlinear frequency conversion, optical losses, scattering technique, semiconductor waveguides, two-photon absorption, GUIDE LOSS-MEASUREMENT, PLANAR WAVE-GUIDES, FABRY-PEROT METHOD, PROPAGATION LOSS, BAND-GAP, REFRACTIVE-INDEX, PARAMETRIC FLUORESCENCE, 2-PHOTON ABSORPTION, GAAS, ALGAAS",

author = "\{Venugopal Rao\}, S and K Moutzouris and Majid Ebrahimzadeh and \{De Rossi\}, A and M Calligaro and V Ortiz and G Ginitz and V Berger",

year = "2003",

month = mar,

doi = "10.1109/JQE.2002.808173",

language = "English",

volume = "39",

pages = "478--486",

journal = "IEEE Journal of Quantum Electronics",

issn = "0018-9197",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Influence of scattering and two-photon absorption on the optical loss in GaAs/Al2O3 nonlinear waveguides measured using femtosecond pulses

AU - Venugopal Rao, S

AU - Moutzouris, K

AU - Ebrahimzadeh, Majid

AU - De Rossi, A

AU - Calligaro, M

AU - Ortiz, V

AU - Ginitz, G

AU - Berger, V

PY - 2003/3

Y1 - 2003/3

N2 - The influence of scattering and two-photon absorption on the optical loss in GaAs-Al2O3 semiconductor nonlinear waveguides has been studied using femtosecond pulses. By deploying a scattering technique, loss coefficients were evaluated over an extended wavelength range of 1.3-2.1 mum in the near-infrared. A systematic study involving intensity and wavelength dependence of the loss revealed the presence of two-photon absorption for wavelengths below 1.6 mum. A simple nonlinear transmission study enabled the separation of the two-photon absorption coefficient from scattering and linear absorption. The calculated two-photon absorption coefficients were similar to9-20 cm/GW.

AB - The influence of scattering and two-photon absorption on the optical loss in GaAs-Al2O3 semiconductor nonlinear waveguides has been studied using femtosecond pulses. By deploying a scattering technique, loss coefficients were evaluated over an extended wavelength range of 1.3-2.1 mum in the near-infrared. A systematic study involving intensity and wavelength dependence of the loss revealed the presence of two-photon absorption for wavelengths below 1.6 mum. A simple nonlinear transmission study enabled the separation of the two-photon absorption coefficient from scattering and linear absorption. The calculated two-photon absorption coefficients were similar to9-20 cm/GW.

KW - nonlinear frequency conversion

KW - optical losses

KW - scattering technique

KW - semiconductor waveguides

KW - two-photon absorption

KW - GUIDE LOSS-MEASUREMENT

KW - PLANAR WAVE-GUIDES

KW - FABRY-PEROT METHOD

KW - PROPAGATION LOSS

KW - BAND-GAP

KW - REFRACTIVE-INDEX

KW - PARAMETRIC FLUORESCENCE

KW - 2-PHOTON ABSORPTION

KW - GAAS

KW - ALGAAS

UR - https://www.scopus.com/pages/publications/0037340933

U2 - 10.1109/JQE.2002.808173

DO - 10.1109/JQE.2002.808173

M3 - Article

SN - 0018-9197

VL - 39

SP - 478

EP - 486

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

ER -

Influence of scattering and two-photon absorption on the optical loss in GaAs/Al2O3 nonlinear waveguides measured using femtosecond pulses

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this