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Science 3 September 2004:
Vol. 305. no. 5689, pp. 1444 - 1447
DOI: 10.1126/science.1100968
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Reports

Electrically Driven Single-Cell Photonic Crystal Laser

Hong-Gyu Park,1 Se-Heon Kim,1 Soon-Hong Kwon,1 Young-Gu Ju,2 Jin-Kyu Yang,1 Jong-Hwa Baek,1 Sung-Bock Kim,2 Yong-Hee Lee1*

We report the experimental demonstration of an electrically driven, single-mode, low threshold current (~260 µA) photonic band gap laser operating at room temperature. The electrical current pulse is injected through a sub-micrometer-sized semiconductor wire at the center of the mode with minimal degradation of the quality factor. The actual mode of interest operates in a nondegenerate monopole mode, as evidenced through the comparison of the measurement with the computation based on the actual fabricated structural parameters. As a small step toward a thresholdless laser or a single photon source, this wavelength-size photonic crystal laser may be of interest to photonic crystals, cavity quantum electrodynamics, and quantum information communities.

1 Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
2 Telecommunication Basic Research Laboratory, Electronics and Telecommunications Research Institute, Daejeon 305-600, Korea.

* To whom correspondence should be addressed. E-mail: yhlee{at}kaist.ac.kr

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Science. ISSN 0036-8075 (print), 1095-9203 (online)