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Pump-probe experiments on Er coupled Si-nanocrystals rib-loaded waveguides

Published online by Cambridge University Press:  01 February 2011

N. Daldosso ,
D. Navarro-Urrios ,
M. Melchiorri ,
L. Pavesi ,
F. Gourbilleau ,
M. Carrada ,
R. Rizk ,
C. García ,
P. Pellegrino  and
B. Garrido
...Show all authors
N. Daldosso
Affiliation:
INFM-Dipartimento di Fisica, Univ. di Trento, via Sommarive 14, 38050 Povo, Trento, Italy
D. Navarro-Urrios
Affiliation:
INFM-Dipartimento di Fisica, Univ. di Trento, via Sommarive 14, 38050 Povo, Trento, Italy
M. Melchiorri
Affiliation:
INFM-Dipartimento di Fisica, Univ. di Trento, via Sommarive 14, 38050 Povo, Trento, Italy
L. Pavesi
Affiliation:
INFM-Dipartimento di Fisica, Univ. di Trento, via Sommarive 14, 38050 Povo, Trento, Italy
F. Gourbilleau
Affiliation:
SIFCOM-ENSICAEN, 6 Boulevard Maréchal Juin, 14050 CAEN, France
M. Carrada
Affiliation:
SIFCOM-ENSICAEN, 6 Boulevard Maréchal Juin, 14050 CAEN, France
R. Rizk
Affiliation:
SIFCOM-ENSICAEN, 6 Boulevard Maréchal Juin, 14050 CAEN, France
C. García
Affiliation:
EME, Departament d'Electrònica, Universitat de Barcelona, Martí i franquès, 1, 08028, Barcelona, Spain
P. Pellegrino
Affiliation:
EME, Departament d'Electrònica, Universitat de Barcelona, Martí i franquès, 1, 08028, Barcelona, Spain
B. Garrido
Affiliation:
EME, Departament d'Electrònica, Universitat de Barcelona, Martí i franquès, 1, 08028, Barcelona, Spain
L. Cognolato
Affiliation:
Agilent Technologies, Via G. ReissRomoli 274, I-10148 Torino, Italy
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Abstract

Pump and probe experiments have been performed on Er-doped rib-loaded waveguides containing Si nanoclusters grown by reactive magnetron sputtering. An Er3+ absorption cross-section of about 5×10−21 cm2 has been found at 1534 nm by insertion losses measurements. Transmission measurements at 1310 nm under optical pumping (488 nm) shows a decreasing of the signal because of confined carrier absorption of the Si nanoclusters. Amplification experiments at 1535 nm evidence two pump power regimes: losses due to confined carrier absorption in the Si nanoclusters at low pump powers and signal amplification at high pump powers. For strong optical pumping, signal enhancement of about 1.2 dB/cm was observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 832: Symposium F – Group IV Semiconductor Nanostructures , 2004 , F11.3
Copyright
Copyright © Materials Research Society 2005

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References

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