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Articles 31 - 31 of 31
Full-Text Articles in Physics
Elliptical Micro-Ring Organic Lasers, P. R. Korade, John Ballato, R, V. Gregory
Elliptical Micro-Ring Organic Lasers, P. R. Korade, John Ballato, R, V. Gregory
Chemistry & Biochemistry Faculty Publications
Multimode laser action was observed from optically excited 2,5-dioctyloxy poly(para-phenylene-vinylene), DOO-PPV, micro-rings coaxially deposited around glass optical fibres of elliptical cross-section. The laser emission was found to be dependent upon the incident angle of the excitation and exhibited linewidths of approximately 1.2 Å, quality factors (Q) exceeding 5000, and thresholds below 0.3 μJ pulse. Such elliptical organic micro-ring lasers offer increased tailorability in emission properties over more conventional analogues of circular cross-section. Also discussed is the potential for such low-threshold lasers to serve as integrated sources for fibre lasers and amplifiers.