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Single-nanowire electrically driven lasers

Nature volume 421, pages 241–245 (2003)Cite this article

Abstract

Electrically driven semiconductor lasers are used in technologies ranging from telecommunications and information storage to medical diagnostics and therapeutics1. The success of this class of lasers is due in part to well-developed planar semiconductor growth and processing, which enables reproducible fabrication of integrated, electrically driven devices2,3. Yet this approach to device fabrication is also costly and difficult to integrate directly with other technologies such as silicon microelectronics. To overcome these issues for future applications, there has been considerable interest in using organic molecules4,5, polymers6,7, and inorganic nanostructures8,9,10 for lasers, because these materials can be fashioned into devices by chemical processing. Indeed, amplified stimulated emission and lasing have been reported for optically pumped organic systems4,5,6,7 and, more recently, inorganic nanocrystals8,9 and nanowires10. However, electrically driven lasing, which is required in most applications, has met with several difficulties in organic systems11, and has not been addressed for assembled nanocrystals or nanowires. Here we investigate the feasibility of achieving electrically driven lasing from individual nanowires. Optical and electrical measurements made on single-crystal cadmium sulphide nanowires show that these structures can function as Fabry–Perot optical cavities with mode spacing inversely related to the nanowire length. Investigations of optical and electrical pumping further indicate a threshold for lasing as characterized by optical modes with instrument-limited linewidths. Electrically driven nanowire lasers, which might be assembled in arrays capable of emitting a wide range of colours, could improve existing applications and suggest new opportunities.

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Figure 1: Nanowire Fabry–Perot optical cavities.
Figure 2: Optically pumped nanowire laser.
Figure 3: Nanowire electrical injection laser.

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Acknowledgements

We thank H. Park, X. Zhuang & M. S. Gudiksen for helpful discussion. C.M.L. is grateful for support of this work by the Air Force Office of Scientific Research.

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Author notes

  1. Xiangfeng Duan, Yu Huang and Charles M. Lieber: These authors contributed equally to this work

Authors and Affiliations

  1. Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, 02138, USA

    Xiangfeng Duan, Yu Huang, Ritesh Agarwal & Charles M. Lieber

  2. Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, 02138, USA

    Charles M. Lieber

Authors
  1. Xiangfeng Duan
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  2. Yu Huang
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  3. Ritesh Agarwal
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  4. Charles M. Lieber
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Correspondence to Charles M. Lieber.

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Duan, X., Huang, Y., Agarwal, R. et al. Single-nanowire electrically driven lasers. Nature 421, 241–245 (2003). https://doi.org/10.1038/nature01353

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