UV Fluorescence Detection and Spectroscopy in Chemistry and Life Sciences

Gutmann, Emmanuel; Erfurth, F; Drewitz, Anke; Scheibe, Armin; Meinke, Martina C.

doi:10.1007/978-3-319-24100-5_13

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2024

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“…Light propagation suffers from optical losses [3], [6]. Investigation and mitigation of these loss mechanisms could pave the road for a new class of UV-C lasers with applications in high-resolution manufacturing (singulation [7], polymerization [8]) and imaging (UV Raman spectroscopy [9], in-vivo fluorescence spectroscopy [10]).…”

Section: Introductionmentioning

confidence: 99%

Optical Gain in AlGaN Quantum Wells: Impact of Higher Energy States

Kölle,

Römer,

Cardinali

et al. 2024

IEEE Photonics J.

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Simulations of optical gain in aluminum gallium nitride (AlGaN) quantum wells are extended to the high charge carrier density regime required for achieving gain at 275 nm for UV laser diodes. Coulomb interaction is modeled using the 2nd Born approximation. We demonstrate good agreement with experimental data obtained through optical pumping, and predict gain spectra for electrical pumping. Special consideration is given to the contribution of higher bands in wide quantum wells.

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