Stimulated emission in the active planar optical waveguide made of silicon nanocrystals

K. Luterová; D. Navarro; M. Cazzanelli; T. Ostatnický; J. Valenta; S. Cheylan; I. Pelant; L. Pavesi

doi:10.1002/pssc.200461206

Stimulated emission in the active planar optical waveguide made of silicon nanocrystals

K. Luterová^*, D. Navarro, M. Cazzanelli, T. Ostatnický, J. Valenta, S. Cheylan, I. Pelant, L. Pavesi

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

Thin layers of silicon nanocrystals prepared by silicon-ion implantation into silica substrate form active planar optical waveguides. Testing experiments of optical gain have been performed on a sample implanted to a dose of 4×10¹⁷ cm^-2 by using the variable stripe length (VSL) technique. The photoluminescence collected from the sample facet shows spectrally narrow, polarization-resolved transverse electric (TE) and transverse magnetic (TM) substrate modes. Continuous wave VSL revealed a reduction of optical losses in both modes only. On the contrary, a fast decay component due to amplified spontaneous e-mission is observed in time-resolved VSL experiments. This fast component shows positive net modal optical gain of ∼12 cm ^-1. The observed superlinear emission as a function of pump intensity, accompanied by shortening of the fast component lifetime, supports further the observation of stimulated emission.

Original language	English
Pages (from-to)	3429-3434
Number of pages	6
Journal	Physica Status Solidi C: Conferences
Volume	2
Issue number	9
DOIs	https://doi.org/10.1002/pssc.200461206
Publication status	Published - 2005

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title = "Stimulated emission in the active planar optical waveguide made of silicon nanocrystals",

abstract = "Thin layers of silicon nanocrystals prepared by silicon-ion implantation into silica substrate form active planar optical waveguides. Testing experiments of optical gain have been performed on a sample implanted to a dose of 4×1017 cm-2 by using the variable stripe length (VSL) technique. The photoluminescence collected from the sample facet shows spectrally narrow, polarization-resolved transverse electric (TE) and transverse magnetic (TM) substrate modes. Continuous wave VSL revealed a reduction of optical losses in both modes only. On the contrary, a fast decay component due to amplified spontaneous e-mission is observed in time-resolved VSL experiments. This fast component shows positive net modal optical gain of ∼12 cm -1. The observed superlinear emission as a function of pump intensity, accompanied by shortening of the fast component lifetime, supports further the observation of stimulated emission.",

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T1 - Stimulated emission in the active planar optical waveguide made of silicon nanocrystals

AU - Luterová, K.

AU - Navarro, D.

AU - Cazzanelli, M.

AU - Ostatnický, T.

AU - Valenta, J.

AU - Cheylan, S.

AU - Pelant, I.

AU - Pavesi, L.

PY - 2005

Y1 - 2005

N2 - Thin layers of silicon nanocrystals prepared by silicon-ion implantation into silica substrate form active planar optical waveguides. Testing experiments of optical gain have been performed on a sample implanted to a dose of 4×1017 cm-2 by using the variable stripe length (VSL) technique. The photoluminescence collected from the sample facet shows spectrally narrow, polarization-resolved transverse electric (TE) and transverse magnetic (TM) substrate modes. Continuous wave VSL revealed a reduction of optical losses in both modes only. On the contrary, a fast decay component due to amplified spontaneous e-mission is observed in time-resolved VSL experiments. This fast component shows positive net modal optical gain of ∼12 cm -1. The observed superlinear emission as a function of pump intensity, accompanied by shortening of the fast component lifetime, supports further the observation of stimulated emission.

AB - Thin layers of silicon nanocrystals prepared by silicon-ion implantation into silica substrate form active planar optical waveguides. Testing experiments of optical gain have been performed on a sample implanted to a dose of 4×1017 cm-2 by using the variable stripe length (VSL) technique. The photoluminescence collected from the sample facet shows spectrally narrow, polarization-resolved transverse electric (TE) and transverse magnetic (TM) substrate modes. Continuous wave VSL revealed a reduction of optical losses in both modes only. On the contrary, a fast decay component due to amplified spontaneous e-mission is observed in time-resolved VSL experiments. This fast component shows positive net modal optical gain of ∼12 cm -1. The observed superlinear emission as a function of pump intensity, accompanied by shortening of the fast component lifetime, supports further the observation of stimulated emission.

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JO - Physica Status Solidi C: Conferences

JF - Physica Status Solidi C: Conferences

IS - 9

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Stimulated emission in the active planar optical waveguide made of silicon nanocrystals

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