Comment on "Optical characterization of quantum dots entrained in microstructured optical fibers" [Physica E 26 (2005) 377-381]
Comment on "Optical characterization of quantum dots entrained in microstructured optical fibers" [Physica E 26 (2005) 377-381]
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.
107-108
Finlayson, C.E.
bcc6c2a7-e346-4b08-93e7-be12c7033dac
2006
Finlayson, C.E.
bcc6c2a7-e346-4b08-93e7-be12c7033dac
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), .
(doi:10.1016/j.physe.2005.10.005).
Abstract
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
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Local EPrints ID: 42395
URI: http://eprints.soton.ac.uk/id/eprint/42395
ISSN: 1386-9477
PURE UUID: 6209cda8-3827-4ecd-8d06-844aadf46de2
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Date deposited: 11 Dec 2006
Last modified: 15 Mar 2024 08:47
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C.E. Finlayson
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