{"title":"High efficiency silicon nanodisk laser based on colloidal CdSe/ZnS QDs.","authors":"Yao-Chen Wang, Chi-Tsu Yuan, Yi-Chun Yang, Meng-Chyi Wu, Jau Tang, Min-Hsiung Shih","doi":"10.3402/nano.v2i0.7275","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>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.</p><p><strong>Methods: </strong>Time-resolved photoluminescence (PL) of QDs; nanodisk by e-beam lithography.</p><p><strong>Results: </strong>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.</p><p><strong>Conclusion: </strong>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.</p>","PeriodicalId":74237,"journal":{"name":"Nano reviews","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3402/nano.v2i0.7275","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano reviews","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3402/nano.v2i0.7275","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2011/7/22 0:00:00","PubModel":"Epub","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
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.
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