Room-temperature single nanoribbon lasers

Zapien, J.A.; Jiang, Y.; Meng, X.M.; Chen, W.; Au, F.C.K.; Lifshitz, Y.; Lee, S.T.
February 2004
Applied Physics Letters;2/16/2004, Vol. 84 Issue 7, p1189
Academic Journal
Using a single nano-object measurement methodology that enables the correlation between size/morphology/structure and photoluminescence (PL) characteristics, we show that nanoribbons are an excellent model system to study single nano-objects. In particular, we measure the PL characteristics of optically pumped individual single-crystal zinc–sulfide nanoribbons. Small collection angle measurements show that nanoribbons form excellent optical cavities and gain medium with high (full width at half maximum<0.1 nm) lasing modes free of PL background even for a low pumping power density of 9 kW/cm[sup 2]. Large collection angles add a broad PL component and obscure the correct high-quality lasing of the nanowires/nanoribbons. © 2004 American Institute of Physics.


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