Enhancement of Amplified Spontaneous Emission and Laser Performance of Rhodamine 6G/Cellulose Acetate DFB and DBR Waveguide Devices: A Role of Thermally Annealed P(VDF-TrFE) Intermediate Layer

2020 ◽  
Vol 2 (6) ◽  
pp. 1514-1521
Author(s):  
Naoto Tsutsumi ◽  
Yoshinori Hirano ◽  
Kenji Kinashi ◽  
Wataru Sakai
Keyword(s):  
Cellulose Acetate ◽  
Spontaneous Emission ◽  
Intermediate Layer ◽  
Rhodamine 6G ◽  
Amplified Spontaneous Emission ◽  
Laser Performance ◽  
Waveguide Devices

The role of amplified spontaneous emission in the ultrafast relaxation dynamics of polymer films

1998 ◽  
Vol 289 (1-2) ◽  
pp. 205-210 ◽  
Author(s):  
S. Stagira ◽  
M. Nisoli ◽  
G. Cerullo ◽  
M. Zavelani–Rossi ◽  
S. De Silvestri ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Polymer Films ◽  
Amplified Spontaneous Emission ◽  
Relaxation Dynamics ◽  
Ultrafast Relaxation

scholarly journals Light Emission Properties of Thermally Evaporated CH3NH3PbBr3 Perovskite from Nano- to Macro-Scale: Role of Free and Localized Excitons

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 211
Author(s):  
Claudia Triolo ◽  
Maria Luisa De Giorgi ◽  
Antonella Lorusso ◽  
Arianna Cretì ◽  
Saveria Santangelo ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Light Emission ◽  
Amplified Spontaneous Emission ◽  
Stimulated Emission ◽  
Thin Layers ◽  
Light Emitting ◽  
Macro Scale ◽  
Localized Excitons ◽  
Emitting Species

Over the past decade, interest about metal halide perovskites has rapidly increased, as they can find wide application in optoelectronic devices. Nevertheless, although thermal evaporation is crucial for the development and engineering of such devices based on multilayer structures, the optical properties of thermally deposited perovskite layers (spontaneous and amplified spontaneous emission) have been poorly investigated. This paper is a study from a nano- to micro- and macro-scale about the role of light-emitting species (namely free carriers and excitons) and trap states in the spontaneous emission of thermally evaporated thin layers of CH3NH3PbBr3 perovskite after wet air UV light trap passivation. The map of light emission from grains, carried out by SNOM at the nanoscale and by micro-PL techniques, clearly indicates that free and localized excitons (EXs) are the dominant light-emitting species, the localized excitons being the dominant ones in the presence of crystallites. These species also have a key role in the amplified spontaneous emission (ASE) process: for higher excitation densities, the relative contribution of localized EXs basically remains constant, while a clear competition between ASE and free EXs spontaneous emission is present, which suggests that ASE is due to stimulated emission from the free EXs.

scholarly journals Amplified spontaneous emission of Rhodamine 6G embedded in pure deoxyribonucleic acid

2012 ◽  
Vol 101 (17) ◽  
pp. 171113 ◽  
Author(s):  
Ileana Rau ◽  
Adam Szukalski ◽  
Lech Sznitko ◽  
Andrzej Miniewicz ◽  
Stanislaw Bartkiewicz ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Deoxyribonucleic Acid ◽  
Rhodamine 6G ◽  
Amplified Spontaneous Emission

Effect of Molecular Morphology on Amplified Spontaneous Emission of Bis-Styrylbenzene Derivatives

2009 ◽  
Vol 21 (40) ◽  
pp. 4034-4038 ◽  
Author(s):  
Ryota Kabe ◽  
Hajime Nakanotani ◽  
Tomo Sakanoue ◽  
Masayuki Yahiro ◽  
Chihaya Adachi
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Molecular Morphology
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