Dual-Frequency VECSEL at Telecom Wavelength for Sensing Applications

Léa Chaccour, Guy Aubin, Kamel Merghem, Jean-Louis Oudar, Aghiad Khadour, Patrice Chatellier, Sophie Bouchoule


We aim at realizing an optically-pumped, dual-frequency VECSEL at telecom wavelength (1.5 µm) with a frequency difference in the radio-frequency (RF) range (around 11 GHz), to be used in a sensor unit based on Brillouin scattering in optical fibers. Laser emission of two orthogonally-polarized cavity modes with a controlled frequency difference is obtained by inserting a birefringent crystal in the VECSEL cavity. We have examined the influence of the different intra-cavity elements on the laser emission. It is shown that optimizing the free spectral range and the bandwidth of the intra-cavity Fabry-Perot etalon is of practical importance to achieve a stable single longitudinal laser emission for each of the two orthogonal polarizations. The optimization of the output power has also been investigated and it is concluded that up to 100 mW output power can be expected by adjusting the reflectivity of the output coupling mirror of the VECSEL cavity. The achievement of a highly-stable frequency difference is crucial for sensing applications. For this reason the influence of different parameters on the stability of the dual-frequency emission have been studied. It is concluded that mechanical vibrations are the main cause of the RF signal instability in our free-running VECSEL cavity. The design of a compact or mono-block cavity may allow to meet the stability requirements for our sensors.


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Paper Citation

in Harvard Style

Chaccour L., Aubin G., Merghem K., Oudar J., Khadour A., Chatellier P. and Bouchoule S. (2016). Dual-Frequency VECSEL at Telecom Wavelength for Sensing Applications . In Proceedings of the 13th International Joint Conference on e-Business and Telecommunications - Volume 3: OPTICS, (ICETE 2016) ISBN 978-989-758-196-0, pages 53-58. DOI: 10.5220/0005965200530058

in Bibtex Style

author={Léa Chaccour and Guy Aubin and Kamel Merghem and Jean-Louis Oudar and Aghiad Khadour and Patrice Chatellier and Sophie Bouchoule},
title={Dual-Frequency VECSEL at Telecom Wavelength for Sensing Applications},
booktitle={Proceedings of the 13th International Joint Conference on e-Business and Telecommunications - Volume 3: OPTICS, (ICETE 2016)},

in EndNote Style

JO - Proceedings of the 13th International Joint Conference on e-Business and Telecommunications - Volume 3: OPTICS, (ICETE 2016)
TI - Dual-Frequency VECSEL at Telecom Wavelength for Sensing Applications
SN - 978-989-758-196-0
AU - Chaccour L.
AU - Aubin G.
AU - Merghem K.
AU - Oudar J.
AU - Khadour A.
AU - Chatellier P.
AU - Bouchoule S.
PY - 2016
SP - 53
EP - 58
DO - 10.5220/0005965200530058