Amplified spontaneous emission spectra of poly(9,9-dioctylfluorenyl-2,7-diyl) under pulsed laser excitation

2015 ◽  
Vol 209 ◽  
pp. 534-543 ◽  
Author(s):  
K.H. Ibnaouf
Keyword(s):  
Spontaneous Emission ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Amplified Spontaneous Emission

scholarly journals Spectral and ASE Properties of 1-(4-Methylsulfonyl Phenyl)-3-(4-N, N Dimethyl Amino Phenyl)-2-Propen-1-One (MSPPP)

2021 ◽  
Author(s):  
Mohana University ◽  
Abdelrahman A. Elbadawi ◽  
K.H. Ibnaouf
Keyword(s):  
Quantum Yield ◽  
Spontaneous Emission ◽  
Fluorescence Spectra ◽  
Laser Excitation ◽  
Stokes Shift ◽  
Amplified Spontaneous Emission ◽  
Wavelength Band ◽  
Laser Dye ◽  
Energy Band Gap ◽  
Pulse Laser Excitation

Abstract This work demonstrates the spectral and amplified spontaneous emission (ASE) properties of a new chalcone laser dye material of 1-(4-methylsulfonyl phenyl)-3-(4-N, N dimethyl amino phenyl)-2-propen-1-one (MSPPP). The absorption, fluorescence, Stokes’ shift and quantum yield were obtained using different organic solvents. The energy band gap was calculated and compared with that of 3-[4-(dimethylamino) phenyl]-1-phenyl-(2E)-propen- 1-one (DAPPP). These include absorption, fluorescence, stokes shift, and amplified spontaneous emission (ASE). The absorption spectra of MSPPP showed a wavelength band in the range 403–427 nm, whereas the fluorescence spectra exhibited a band at 472–533 nm. ASE was observed under pump pulse laser excitation, and the wavelengths were attuned from 511 to 548 nm.

Amplified spontaneous emission spectra from the superexciplex of coumarin 138

2012 ◽  
Vol 97 ◽  
pp. 1145-1151 ◽  
Author(s):  
K.H. Ibnaouf ◽  
S. Prasad ◽  
A.S. Aldwayyan ◽  
Mohammad S. AlSalhi ◽  
V. Masilamani
Keyword(s):  
Spontaneous Emission ◽  
Emission Spectra ◽  
Amplified Spontaneous Emission

scholarly journals Synthesis, Properties of a New (Polymer and Chalcone)

2019 ◽  
pp. 1-9
Author(s):  
Mohana Faroug Attia
Keyword(s):  
Spontaneous Emission ◽  
Fluorescence Spectra ◽  
Emission Spectra ◽  
Amplified Spontaneous Emission ◽  
Absorption And Fluorescence Spectra ◽  
Synthesis Properties ◽  
Ft Ir ◽  
Pulse Energies ◽  
Conventional Laser ◽  
Methyl Phenyl

This paper included two objectives: (i) Synthesis of Polymer {poly 2- [1- phenyl -3-(4-methyl phenyl)-4, 5-dihydropyrazole-5-yl-(4-phenoxy carbonyl)] styrene} PMDPCS and structure characterized by FT-IR, 1H-NMR spectra and Uv/Vis and XRD. (ii) Synthesis of chalcone {3-(4-(dimethylamino) phenyl)-2-phenyl-(2E) propen-1-one} (DAPPP) for absorption and fluorescence spectra under different solvents and concentrations.  Also, under various concentrations, organic solvents and pump pulse energies of Nd: YAG laser, the amplified spontaneous emission (ASE) was studied. Additionally, under the same identical conditions, the amplified spontaneous emission spectra of DAPPP in solution were compared with a conventional laser dye of coumarin 503. Finally, the gain and the fluorescence quantum yield of DAPPP were determined.

scholarly journals Observation of white-light amplified spontaneous emission from carbon nanodots under laser excitation

2012 ◽  
Vol 2 (4) ◽  
pp. 490 ◽  
Author(s):  
Wen Fei Zhang ◽  
Li Bin Tang ◽  
Siu Fung Yu ◽  
Shu Ping Lau
Keyword(s):  
Spontaneous Emission ◽  
White Light ◽  
Laser Excitation ◽  
Amplified Spontaneous Emission ◽  
Carbon Nanodots

Superior light-resistant dithieno[3,2-b:2′,3′-d]arsole-based polymers exhibiting ultrastable amplified spontaneous emission

2021 ◽  
Vol 57 (13) ◽  
pp. 1595-1598
Author(s):  
Chieko Yamazawa ◽  
Yoshinori Hirano ◽  
Hiroaki Imoto ◽  
Naoto Tsutsumi ◽  
Kensuke Naka
Keyword(s):  
Spontaneous Emission ◽  
Pulse Laser ◽  
Laser Excitation ◽  
Amplified Spontaneous Emission ◽  
Pulse Laser Excitation ◽  
Continuous Pulse

Dithieno[3,2-b:2′,3′-d]arsole-based polymers show remarkably amplified spontaneous emission (ASE) stability under continuous pulse laser excitation for at least 15 h.

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