Amplified spontaneous emission from internal energy transfer process in the copolymer BEHP-co-MEH-PPV |
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| Authors: | MS AlSalhi KH Ibnaouf V Masilamani OA Yassin |
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| Institution: | 1. King Saud University, College of Science, Physics and Astronomy Department, P.O. Box 2455, Riyadh 11451, Saudi Arabia;2. Al-Imam University, Faculty of Science, Physics Department, P.O. Box 87245, Riyadh 11642, Saudi Arabia;3. Taibah University, Faculty of Science, Physics Department, P.O. Box 344, Al Medinah Al Munawara, Saudi Arabia |
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| Abstract: | We have studied the Amplified Spontaneous Emission (ASE) characteristics of the conjugated copolymer poly{2-2′,5′-bis(2″-ethylhexyloxy)phenyl]-1,4-phenylenevinylene]-co-2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene]} (BEHP-co-MEH-PPV) in a few organic solutions under optical pumping by the third harmonic of Nd:YAG (355 nm). The results show that in BEHP-co-MEH-PPV, the BEHP-PPV component is capable of forcing MEH-PPV to produce ASE at 560 nm, which appears to arise out of the non-excimeric state of MEH-PPV.The ASE of BEHP-co-MEH-PPV was also compared with the conventional laser dyes Rhodamine B (Rh B), Rhodamine 6G (Rh 6G), and also the new laser material MEH-PPV. |
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