20.500.12556/RUL-152327 Optical gain and photo-bleaching of organic dyes, quantum dots, perovskite nanoplatelets and nanodiamonds Optical gain and resistance against photo-bleaching are key material parameters for practical applications in microlasers and microphotonics. Here, we present studies of optical amplification and photo-bleaching in a wide range of optical gain materials, including fluorescent dyes, quantum dots and rods, organic and inorganic room temperature polaritons, and nanodiamonds with emission range from 430 to 680 nm. We used amplified spontaneous emission (ASE) for each material to measure the optical gain. Robustness against photo-bleaching was determined by measuring the intensity of spontaneous emission of the material as a function of the number of excitation femtosecond pulses (10$^6$–10$^{10}$) at various excitation energy densities. We show that pyrromethene laser dyes are the best organic emitters in terms of low excitation energy and good optical gain, whereas solid-state polariton materials are better in terms of high optical gain and stability. We found that all organic and inorganic optical gain materials bleach completely after 10$^6$–10$^9$ illumination pulses with typical 0.1–0.6 GW/cm$^2$ peak power density, with an exception of nanodiamonds. We show that nanodiamonds are the only optical gain material that shows no photo-bleaching beyond the 10$^{10}$ excitation pulses of 300 fs pulse duration and with 0.16 GW/cm$^2$ peak power density. optical gain photostability dyes anthracene nanodiamonds quantum dots quantum rods optična ojačitev fotostabilnost barvila antracen diamantni nanodelci kvantne pike kvantne palčke true false true Angleški jezik Slovenski jezik Članek v reviji 2023-11-20 10:28:50 2023-11-20 10:28:56 2023-11-21 03:36:48 0000-00-00 00:00:00 2023 0 0 Str. 935-956 no. 6 Vol. 50 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 535 1366-5855 10.1080/02678292.2023.2188614 147822851 Optical_gain_and_photo-bleaching_of_organic_dyes__quantum_dots__perovskite_nanoplatelets_and_nanodiamonds.pdf Optical_gain_and_photo-bleaching_of_organic_dyes__quantum_dots__perovskite_nanoplatelets_and_nanodiamonds.pdf 1 6504446C27A254B656395C1078577002 1418890f91570c065dee4ec9725155cea5d570a4ec7627a09efe7e16b40ea2fa 6a00d034-8787-11ee-9dd9-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177769 https://www.tandfonline.com/doi/full/10.1080/02678292.2023.2188614 1 3a8a3d8d-8787-11ee-9dd9-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177768 Fakulteta za matematiko in fiziko 0 0 0