High efficiency silicon nanodisk laser based on colloidal CdSe/ZnS QDs

Nano Reviews & Experiments

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Title High efficiency silicon nanodisk laser based on colloidal CdSe/ZnS QDs
Creator Wang, Yao-Chen
Yuan, Chi-Tsu
Yang, Yi-Chun
Wu, Meng-Chyi
Tang, Jau; RCAS, Academia Sinica, Taipei
Shih, Min-Hsiung
Subject nanodisk; quantum dot; nanolaser; spontaneous emission; whispering galley mode.
Description Introduction: Using colloidal CdSe/ZnS quantum dots in the submicron-sized silicon disk cavity, we have developed a visible wavelength nanodisk laser that operates under extremely low threshold power at room temperature. Methods: Time-resolved photoluminescence (PL) of QDs; nanodisk by e-beam lithography. Results: Observation of lasing action at 594 nm wavelength for quantum dots on a nanodisk (750 nm in diameter) cavity and an ultra-low threshold of 2.8 µW. Conclusion: From QD concentration dependence studies we achieved nearly sevenfold increase in spontaneous emission (SE) rate. We have achieved high efficient and high SE coupling rate in such a QD nanodisk laser.Keywords: nanodisk; quantum dot; nanolaser; spontaneous emission; whispering galley mode(Published: 22 July 2011)Citation: Nano Reviews 2011, 2: 7275 - DOI: 10.3402/nano.v2i0.7275
Publisher Co-Action Publishing
Contributor Academia Sinica Nano Program, and the National Science Council of the Republic of China, Taiwan
Date 2011-07-22
Type info:eu-repo/semantics/article

Format application/pdf
Identifier http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7275
Source Nano Reviews & Experiments; Vol 2 (2011) incl Supplements
Language eng
Relation http://www.nanoreviewsexperiments.net/index.php/nano/article/view/7275/9814

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