First Demonstration of Two-Photon Excitation Fluorescence Lifetime Measurements with Ultra-Short Pulse-on-Demand Light Emitter Utilizing Multiple Wide Quantum Wells
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Author
Mitev, Valentin
Torcheboeuf, Nicolas
Krakowski, Michel
Resneau, Patrick
Larrue, Alexandre
Legoec, Pierre
Robert, Yannick
Vinet, Eric
Garcia, Michel
Parillaud, Olivier
Abstract
We demonstrate two-photon excitation fluorescence lifetime measurements with an ultra-short pulse emitter based on cooperative emission in multiple wide-quantum-well (WQW) heterostructures. Its optical cavity reassembles a tandem-cavity self-pulsing (SP) laser diode with a middle electroabsorber section, but the QWs and the driving conditions are different. Due to quantum-confined Stark effect (QCSE) in wide quantum well, it is possible to spatially pull the electrons and holes apart from each other and quench SP lasing. When the pump bias is removed, an ultra-short pulse due to cooperative recombination of electrons and holes emerges. We apply such superradiant source to excite Rhodamine 6G in ethanol solution in the two-photon absorption regime and we demonstrate the measurements of its fluorescence decay lifetime.
Publication Reference
EUROPEAN SEMICONDUCTOR LASER WORKSHOP 2022 (ESLW 2022), Neuchâtel (Switzerland)
Year
2022-09-16