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Comment on "Optical characterization of quantum dots entrained in microstructured optical fibers" [Physica E 26 (2005) 377-381]

Finlayson, C.E. (2006) Comment on "Optical characterization of quantum dots entrained in microstructured optical fibers" [Physica E 26 (2005) 377-381] Physica E: Low-dimensional Systems and Nanostructures, 31, (1), pp. 107-108. (doi:10.1016/j.physe.2005.10.005).

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In a recent paper, K.E. Meissner, C. Holton, W.B. Spillman Jr. [Physica E 26 (2005) 377] presented a study of the optical properties of colloidal CdSe/ZnS core-shell quantum dots entrained in a microstructured optical fiber. In particular, the authors claimed to have observed optical gain in this system through tight evanescent coupling between a probe light in the core of the fiber and photo-excited quantum dots in the cladding. I suggest that there are fundamental reasons, which are well investigated experimentally and documented, why such quantum dots cannot exhibit optical gain phenomena under continuous-wave excitation, as the authors suggest, and that the experimental results and interpretation do not address these issues, nor do they adequately justify the conclusions reached.

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Published date: 2006


Local EPrints ID: 42395
ISSN: 1386-9477
PURE UUID: 6209cda8-3827-4ecd-8d06-844aadf46de2

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Date deposited: 11 Dec 2006
Last modified: 17 Jul 2017 15:22

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Author: C.E. Finlayson

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