Origin of the excitonic recombinations in hexagonal boron nitride by spatially resolved cathodoluminescence spectroscopy

The excitonic recombinations in hexagonal boron nitride (hBN) are investigated with spatially resolved cathodoluminescence spectroscopy in the UV range. Cathodoluminescence images of an individual hBN crystallite reveals that the 215 nm free excitonic line is quite homogeneously emitted along the crystallite whereas the 220 nm and 227 nm excitonic emissions are located in specific regions of the crystallite. Transmission electron microscopy images show that these regions contain a high density of crystalline defects. This suggests that both the 220 nm and 227 nm emissions are produced by the recombination of excitons bound to structural defects

Atomic oxygen detection in flames using two-photon degenerate four-wave mixing

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Atomic oxygen detection in flames using two-photon degenerate four-wave mixing

no abstrac

Two-color non-linear spectroscopy: application to NO2

International audienceno abstrac

Two-color non-linear spectroscopy: application to NO2

no abstrac

Atomic oxygen detection in flames using two-photon degenerate four-wave mixing

no abstrac

Atomic oxygen detection in flames using two-photon degenerate four-wave mixing

International audienceno abstrac

Observation of strong field effects and rotational line coupling in DFWM processes resonant with 2Sigma-2Phi electronic system

Robertson G, Kohse-Höinghaus K, Le Boiteux S, Aguerre F, Attal-Trétout B. Observation of strong field effects and rotational line coupling in DFWM processes resonant with 2Sigma-2Phi electronic system. Journal of quantative spectroscopy and radiative transfer. 1996;55(1):71-101