Unraveling the ultralow threshold stimulated emission from CdZnS/ZnS quantum dot and enabling high ‐ Q microlasers
buir.contributor.author | Demir, Hilmi Volkan | |
buir.contributor.orcid | Demir, Hilmi Volkan|0000-0003-1793-112X | |
dc.citation.epage | 516 | en_US |
dc.citation.issueNumber | 5 | en_US |
dc.citation.spage | 507 | en_US |
dc.citation.volumeNumber | 9 | en_US |
dc.contributor.author | Wang Y. | en_US |
dc.contributor.author | Fong, K. E. | en_US |
dc.contributor.author | Yang, S. | en_US |
dc.contributor.author | Ta, V. | en_US |
dc.contributor.author | Gao, Y. | en_US |
dc.contributor.author | Wang, Z. | en_US |
dc.contributor.author | Nalla, V. | en_US |
dc.contributor.author | Demir, Hilmi Volkan | en_US |
dc.contributor.author | Sun, H. | en_US |
dc.date.accessioned | 2016-02-08T10:13:54Z | |
dc.date.available | 2016-02-08T10:13:54Z | |
dc.date.issued | 2015 | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.department | Department of Physics | en_US |
dc.department | Institute of Materials Science and Nanotechnology (UNAM) | en_US |
dc.description.abstract | The newly engineered ternary CdZnS/ZnS colloidal quantum dots (CQDs) are found to exhibit remarkably high photoluminescence quantum yield and excellent optical gain properties. However, the underlying mechanisms, which could offer the guidelines for devising CQDs for optimized photonic devices, remain undisclosed. In this work, through comprehensive steady-state and time-resolved spectroscopy studies on a series of CdZnS-based CQDs, we unambiguously clarify that CdZnS-based CQDs are inherently superior optical gain media in the blue spectral range due to the slow Auger process and that the ultralow threshold stimulated emission is enabled by surface/interface engineering. Furthermore, external cavity-free high-Q quasitoroid microlasers were produced from self-assembly of CdZnS/ZnS CQDs by facile inkjet printing technique. Detailed spectroscopy analysis confirms the whispering gallery mode lasing mechanism of the quasitoroid microlasers. This tempting microlaser fabrication method should be applicable to other solution-processed gain materials, which could trigger broad research interests. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA. | en_US |
dc.description.provenance | Made available in DSpace on 2016-02-08T10:13:54Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2015 | en |
dc.identifier.doi | 10.1002/lpor.201500063 | en_US |
dc.identifier.issn | 1863-8880 | |
dc.identifier.uri | http://hdl.handle.net/11693/23436 | |
dc.language.iso | English | en_US |
dc.publisher | Wiley-VCH Verlag | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1002/lpor.201500063 | en_US |
dc.source.title | Laser and Photonics Reviews | en_US |
dc.subject | Auger recombination | en_US |
dc.subject | CdZnS/ZnS quantum dots | en_US |
dc.subject | Multiphoton excitation | en_US |
dc.subject | Stimulated emission | en_US |
dc.subject | Toroid laser | en_US |
dc.subject | Augers | en_US |
dc.subject | Ink jet printing | en_US |
dc.subject | Laser excitation | en_US |
dc.subject | Laser spectroscopy | en_US |
dc.subject | Multiphoton processes | en_US |
dc.subject | Nanocrystals | en_US |
dc.subject | Neodymium lasers | en_US |
dc.subject | Optical emission spectroscopy | en_US |
dc.subject | Optical gain | en_US |
dc.subject | Optical properties | en_US |
dc.subject | Photonic devices | en_US |
dc.subject | Self assembly | en_US |
dc.subject | Semiconductor quantum dots | en_US |
dc.subject | Stimulated emission | en_US |
dc.subject | Whispering gallery modes | en_US |
dc.subject | Auger recombination | en_US |
dc.subject | Colloidal quantum dots | en_US |
dc.subject | Multiphoton excitation | en_US |
dc.subject | Optical gain properties | en_US |
dc.subject | Photoluminescence quantum yields | en_US |
dc.subject | Time-resolved spectroscopy | en_US |
dc.subject | Ultra - low threshold | en_US |
dc.subject | Whispering - gallery - mode lasing | en_US |
dc.subject | Quantum dot lasers | en_US |
dc.title | Unraveling the ultralow threshold stimulated emission from CdZnS/ZnS quantum dot and enabling high ‐ Q microlasers | en_US |
dc.type | Article | en_US |
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