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We demonstrate coherent emission at 300K and at 1.55µm from photonic crystal nanolasers under gain-switched operation. 10GHz gain switching operation has been achieved with bit-pattern independent chirp.
We demonstrate coherent emission at 300K and at 1.55μm from photonic crystal nanolasers under gain-switched operation. 10GHz gain switching operation has been achieved with bit-pattern independent chirp.
We will present a futher understanding of the threshold transition in lasers operating at nanoscale, by measuring the threshold transition from a quantum, statistical and dynamical points of view at room temperature and telecommunication wavelengths.
Due to current crowding, the laser emission in medium size VCSELs starts at threshold in a linearly polarized ldquoflower moderdquo concentrated at the laser aperture periphery. Introducing a holding beam with orthogonal liner polarization we observe localized structure in the center of the device in the orthogonal polarization while the VCSEL keeps lasing in the same flower-mode. We support theoretically...
We observe experimentally and confirm numerically spatially localized light structures with linear polarization, orthogonal to the principal polarization in a 40 mum diameter vertical-cavity surface emitting laser biased above the lasing threshold.
We present experimental results on the formation and control of single and cluster states of cavity solitons in a vertical cavity semiconductor optical amplifier. A parameter region where cluster states are inhibited is demonstrated.
Cavity solitons (CSs) are self-localized spots formed in the transverse plane of a nonlinear cavity. They have been observed in various macroscopic systems, and predicted and observed in microscopic, semiconductor-based systems too. They are formed in a spatially extended, bistable, and modulationally unstable system driven by a coherent field (holding beam) and appear generally as bright spots sitting...
The transverse emission characteristics of an optically pumped vertical external cavity surface emitting laser (VECSEL) operating in a high Fresnel number regime was investigated. This property is sought for the realization of a cavity soliton laser (CSL). Low to very high order flower-like transverse modes were observed experimentally. Output intensity of the VECSEL for different positions of the...
. We analyze experimentally the spatio-temporal dynamics of the transverse structures appearing in broad area edge-emitting semiconductor amplifiers under CW optical injection. We demonstrate that, in certain conditions, the light reflected by the system exhibits a multipeaked structure whose dependence on the parameters suggests an interpretation in terms of cavity solitons. These structures can...
We show the generation of several cavity solitons in driven broad-area vertical-cavity semiconductor lasers below threshold. The switching process is analysed in details, and a theoretical interpretation is provided to confirm and steer experimental findings
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