Mauro A. Bettiati

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This work examines the difficulties associated with using optical techniques to measure temperature when the device itself emits a significant level of light over a wide spectrum, making it a challenge to separate the useful measurement signature from the device light emission. The specific situation considered here is that of using a thermoreflectance (TR)(More)
Rogue waves are observed for the first time, to the best of our knowledge, in a 980 nm laser diode subject to filtered optical feedback via a fiber Bragg grating. By counting the number of rogue waves in a fixed time window, a rogue wave map is established experimentally as a function of both the optical feedback ratio and the laser current. The comparison(More)
Article history: Received 28 June 2013 Accepted 25 July 2013 The optical-strength properties of 3S PHOTONICS GaAs-based semiconductor laser structures are presented. After some general considerations about this robustness issue, typical of high-power diode lasers, the performances in both CW and pulsed current injection of our best vertical structures are(More)
A highly detailed and extended map of low-frequency fluctuations is established for a high-power multi-mode 980 nm laser diode subject to filtered optical feedback from a fiber Bragg grating. The low-frequency fluctuations limits and substructures exhibit substantial differences with previous works.
In this work, rogue waves are observed in a 980 nm laser diode subject to filtered optical feedback via an fibre Bragg grating. A rogue-wave map is established for the first time experimentally as functions of optical feedback ratio and laser current. Rogue waves in our laser system are identified as a part of low frequency fluctuation jump-ups.
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