کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1531308 | 995829 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enhancing the radiative decay rate of fluorescent organic molecules using micropillar microcavities and optical nanocavities Enhancing the radiative decay rate of fluorescent organic molecules using micropillar microcavities and optical nanocavities](/preview/png/1531308.png)
We discuss the enhancement of spontaneous emission of fluorescent organic dyes when placed in micropillar microcavities and also in an optical nanocavity. We show experimentally that an enhancement in the spontaneous-emission rate of 1.78 ± 0.04 times can be realized by placing a thin-film of the molecular dye Lumogen Red dispersed in a polymer matrix into a 3 μm diameter micropillar having a Q-factor of 680. We then model the optical properties of Noda nanocavities in vertically symmetric and asymmetric slab waveguides using TiO2 as a high-index dielectric, with the cavity mode wavelength tuned to 713 nm. We estimate that such cavities will have a maximum Q-factor of 4455 and a Purcell Factor (maximum enhancement in the spontaneous-emission rate) of 340.
Journal: Materials Science and Engineering: B - Volume 149, Issue 3, 15 April 2008, Pages 266–269