| 학회 |
한국화학공학회 |
| 학술대회 |
2001년 가을 (10/19 ~ 10/20, 한밭대학교) |
| 권호 |
7권 2호, p.4653 |
| 발표분야 |
고분자 |
| 제목 |
고체 고분자 레이저 |
| 초록 |
The efficient excitation energy transfer and lasing characteristics of the blends comprising a fluorene-based liquid crystalline and a non-liquid crystalline photoluminescent polymer with different band gap energies are demonstrated. We obtained a very strong and low-threshold photo-pumped lasing (~20 nJ/cm2/pulse) in both the waveguide and micro-cavity devices fabricated with the blend. This low threshold is considered to originate from a largely reduced self-absorption loss by the efficient F rster-type energy transfer in the photoluminescent polymer blend with liquid crystallinity. The observation of low-threshold lasing in thin polymer films offers hope for the realization of electrically-pumped solid-state polymer lasers. Also, the lasing wavelength could be tuned by employing the cascade energy transfer in multi-component blend systems. |
| 저자 |
김영철1, 이태우2, 조현남, 박오옥, 김정엽
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| 소속 |
1한국과학기술(연), 2한국과학기술원 |
| 키워드 |
liquid crystalline polymer blend; laser; energy transfer; threshold energy
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
