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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gupta, S. Waks, E. |
| Copyright Year | 2011 |
| Description | Author affiliation: Department of Electrical and Computer Engineering, University of Maryland, USA (Gupta, S.; Waks, E.) |
| Abstract | Chemically synthesized semiconductor nanocrystal quantum dots (NQDs) are promising candidates for gain media in micro/nano-lasers. The key advantage of using these NQDs is wide-tunability of emission wavelength across the visible and near IR spectrum [1], which is achieved by synthesizing NQDs of different sizes. One well-known decay process, which becomes significant with size reduction in NQDs, is non-radiative Auger recombination, and it has been identified as the main hindrance in achieving lasing with NQDs [2]. Lasing has been demonstrated in a variety of low-loss microcavities with moderate spatial confinement [3][4], by employing close-packed films of NQDs — a way to overcome Auger recombination process. Here we show that by using moderate-loss cavities that provide strong spatial confinement, which results in Purcell enhancement [5], we can overcome Auger recombination process, and achieve efficient lasing with only a few hundreds of NQDs. |
| Starting Page | 1 |
| Ending Page | 2 |
| File Size | 504286 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781457717550 |
| e-ISBN | 9781457717567 |
| DOI | 10.1109/ISDRS.2011.6135399 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-12-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Cavity resonators Couplings Laser excitation Laser modes Radiative recombination Pump lasers |
| Content Type | Text |
| Resource Type | Article |
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