Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots

Francesco Todescato Todescato, Ilaria Fortunati, Samuele Gardin, Eleonora Garbin, Elisabetta Collini, Renato Bozio, Jacek Jaroslaw Jasieniak, Gioia Della Giustina, Giovanna Brusatin, Stefano Toffanin, Raffaella Signorini

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61 Citations (Scopus)

Abstract

The development of a solution-deposited up-converted distributed feedback laser prototype is presented. It employs a sol-gel silica/germania soft-lithographed microcavity and CdSe-CdZnS-ZnS quantum dot/sol-gel zirconia composites as optical gain material. Characterization of the linear and nonlinear optical properties of quantum dots establishes their high absorption cross-sections in the one- and two- photon absorption regimes to be 1 x 10 -14 cm 2 and 5 x 10 4 GM, respectively. In addition, ultrafast transient absorption dynamics measurements of the graded seal quantum dots reveal that the Auger recombination lifetime is 220 ps, a value two times higher than that of the corresponding CdSe core. These factors enable the use of such quantum dots as optically pumped gain media, operating in the one- and two-photon absorption regime. The incorporation of CdSe-CdZnS-ZnS quantum dots within a zirconia host matrix affords a quantum-dot ink that can be directly deposited on our soft-lithographed distributed feedback grating to form an all-solution-processed microcavity laser. By exploiting sol-gel chemistry and the nanoimprinting process, a low-cost up-converted distributed feedback laser is realized. Properly synthesized graded CdSe-CdZnS-ZnS quantum dots are used as active gain material. The laser prototype efficiently works in the visible region, by pumping with one- or two-photon processes. This solution-processed device opens the way to the production of emission-tunable compact lasers.
Original languageEnglish
Pages (from-to)337 - 344
Number of pages8
JournalAdvanced Functional Materials
Volume22
Issue number2
DOIs
Publication statusPublished - 2012

Cite this

Todescato, F. T., Fortunati, I., Gardin, S., Garbin, E., Collini, E., Bozio, R., ... Signorini, R. (2012). Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots. Advanced Functional Materials, 22(2), 337 - 344. https://doi.org/10.1002/adfm.201101684
Todescato, Francesco Todescato ; Fortunati, Ilaria ; Gardin, Samuele ; Garbin, Eleonora ; Collini, Elisabetta ; Bozio, Renato ; Jasieniak, Jacek Jaroslaw ; Della Giustina, Gioia ; Brusatin, Giovanna ; Toffanin, Stefano ; Signorini, Raffaella. / Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots. In: Advanced Functional Materials. 2012 ; Vol. 22, No. 2. pp. 337 - 344.
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title = "Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots",
abstract = "The development of a solution-deposited up-converted distributed feedback laser prototype is presented. It employs a sol-gel silica/germania soft-lithographed microcavity and CdSe-CdZnS-ZnS quantum dot/sol-gel zirconia composites as optical gain material. Characterization of the linear and nonlinear optical properties of quantum dots establishes their high absorption cross-sections in the one- and two- photon absorption regimes to be 1 x 10 -14 cm 2 and 5 x 10 4 GM, respectively. In addition, ultrafast transient absorption dynamics measurements of the graded seal quantum dots reveal that the Auger recombination lifetime is 220 ps, a value two times higher than that of the corresponding CdSe core. These factors enable the use of such quantum dots as optically pumped gain media, operating in the one- and two-photon absorption regime. The incorporation of CdSe-CdZnS-ZnS quantum dots within a zirconia host matrix affords a quantum-dot ink that can be directly deposited on our soft-lithographed distributed feedback grating to form an all-solution-processed microcavity laser. By exploiting sol-gel chemistry and the nanoimprinting process, a low-cost up-converted distributed feedback laser is realized. Properly synthesized graded CdSe-CdZnS-ZnS quantum dots are used as active gain material. The laser prototype efficiently works in the visible region, by pumping with one- or two-photon processes. This solution-processed device opens the way to the production of emission-tunable compact lasers.",
author = "Todescato, {Francesco Todescato} and Ilaria Fortunati and Samuele Gardin and Eleonora Garbin and Elisabetta Collini and Renato Bozio and Jasieniak, {Jacek Jaroslaw} and {Della Giustina}, Gioia and Giovanna Brusatin and Stefano Toffanin and Raffaella Signorini",
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Todescato, FT, Fortunati, I, Gardin, S, Garbin, E, Collini, E, Bozio, R, Jasieniak, JJ, Della Giustina, G, Brusatin, G, Toffanin, S & Signorini, R 2012, 'Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots', Advanced Functional Materials, vol. 22, no. 2, pp. 337 - 344. https://doi.org/10.1002/adfm.201101684

Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots. / Todescato, Francesco Todescato; Fortunati, Ilaria; Gardin, Samuele; Garbin, Eleonora; Collini, Elisabetta; Bozio, Renato; Jasieniak, Jacek Jaroslaw; Della Giustina, Gioia; Brusatin, Giovanna; Toffanin, Stefano; Signorini, Raffaella.

In: Advanced Functional Materials, Vol. 22, No. 2, 2012, p. 337 - 344.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Soft-lithographed up-converted distributed feedback visible lasers based on CdSe-CdZnS-ZnS quantum dots

AU - Todescato, Francesco Todescato

AU - Fortunati, Ilaria

AU - Gardin, Samuele

AU - Garbin, Eleonora

AU - Collini, Elisabetta

AU - Bozio, Renato

AU - Jasieniak, Jacek Jaroslaw

AU - Della Giustina, Gioia

AU - Brusatin, Giovanna

AU - Toffanin, Stefano

AU - Signorini, Raffaella

PY - 2012

Y1 - 2012

N2 - The development of a solution-deposited up-converted distributed feedback laser prototype is presented. It employs a sol-gel silica/germania soft-lithographed microcavity and CdSe-CdZnS-ZnS quantum dot/sol-gel zirconia composites as optical gain material. Characterization of the linear and nonlinear optical properties of quantum dots establishes their high absorption cross-sections in the one- and two- photon absorption regimes to be 1 x 10 -14 cm 2 and 5 x 10 4 GM, respectively. In addition, ultrafast transient absorption dynamics measurements of the graded seal quantum dots reveal that the Auger recombination lifetime is 220 ps, a value two times higher than that of the corresponding CdSe core. These factors enable the use of such quantum dots as optically pumped gain media, operating in the one- and two-photon absorption regime. The incorporation of CdSe-CdZnS-ZnS quantum dots within a zirconia host matrix affords a quantum-dot ink that can be directly deposited on our soft-lithographed distributed feedback grating to form an all-solution-processed microcavity laser. By exploiting sol-gel chemistry and the nanoimprinting process, a low-cost up-converted distributed feedback laser is realized. Properly synthesized graded CdSe-CdZnS-ZnS quantum dots are used as active gain material. The laser prototype efficiently works in the visible region, by pumping with one- or two-photon processes. This solution-processed device opens the way to the production of emission-tunable compact lasers.

AB - The development of a solution-deposited up-converted distributed feedback laser prototype is presented. It employs a sol-gel silica/germania soft-lithographed microcavity and CdSe-CdZnS-ZnS quantum dot/sol-gel zirconia composites as optical gain material. Characterization of the linear and nonlinear optical properties of quantum dots establishes their high absorption cross-sections in the one- and two- photon absorption regimes to be 1 x 10 -14 cm 2 and 5 x 10 4 GM, respectively. In addition, ultrafast transient absorption dynamics measurements of the graded seal quantum dots reveal that the Auger recombination lifetime is 220 ps, a value two times higher than that of the corresponding CdSe core. These factors enable the use of such quantum dots as optically pumped gain media, operating in the one- and two-photon absorption regime. The incorporation of CdSe-CdZnS-ZnS quantum dots within a zirconia host matrix affords a quantum-dot ink that can be directly deposited on our soft-lithographed distributed feedback grating to form an all-solution-processed microcavity laser. By exploiting sol-gel chemistry and the nanoimprinting process, a low-cost up-converted distributed feedback laser is realized. Properly synthesized graded CdSe-CdZnS-ZnS quantum dots are used as active gain material. The laser prototype efficiently works in the visible region, by pumping with one- or two-photon processes. This solution-processed device opens the way to the production of emission-tunable compact lasers.

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DO - 10.1002/adfm.201101684

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