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Single-mode laser by parity-time symmetry breaking
Abstract
Effective manipulation of cavity resonant modes is crucial for emission control in laser physics and applications. Using the concept of parity-time symmetry to exploit the interplay between gain and loss (i.e., light amplification and absorption), we demonstrate a parity-time symmetry–breaking laser with resonant modes that can be controlled at will. In contrast to conventional ring cavity lasers with multiple competing modes, our parity-time microring laser exhibits intrinsic single-mode lasing regardless of the gain spectral bandwidth. Thresholdless parity-time symmetry breaking due to the rotationally symmetric structure leads to stable single-mode operation with the selective whispering-gallery mode order. Exploration of parity-time symmetry in laser physics may open a door to next-generation optoelectronic devices for optical communications and computing.
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Citations
Cited by
Yao, J., Capmany, J., & Li, M. (2024) · Wiley eBooks · doi:10.1002/9781394205318 · Cited by 2,753
Parity–time symmetry and exceptional points in photonics
Özdemir, Ş. K., Rotter, S., Nori, F., & Yang, L. (2019) · Nature Materials · doi:10.1038/s41563-019-0304-9 · Cited by 1,773
Exceptional topology of non-Hermitian systems
Bergholtz, E. J., Budich, J. C., & Kunst, F. K. (2021) · Reviews of Modern Physics · doi:10.1103/revmodphys.93.015005 · Cited by 1,711
Integrated microwave photonics
Marpaung, D., Yao, J., & Capmany, J. (2019) · Nature Photonics · doi:10.1038/s41566-018-0310-5 · Cited by 1,393
Spawning rings of exceptional points out of Dirac cones
Zhen, B., Hsu, C. W., Igarashi, Y., Lu, L., Kaminer, I., Pick, A., Chua, S.-L., Joannopoulos, J. D., & Soljačić, M. (2015) · Nature · doi:10.1038/nature14889 · Cited by 861
Metadata
- Authors
- Feng, L., Wong, Z. J., Ma, R.-M., Wang, Y., & Zhang, X.
- Venue
- Science
- Published
- 2014-11-21
- Volume
- 346
- Issue
- 6212
- Pages
- 972-975
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2066202639
- Cited by
- 1,709
- References
- 0
- FWCI
- 49.25
- Type
- journal article
- Language
- en
- Open access
- closed
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- Feng, L., Wong, Z. J., Ma, R.-M., Wang, Y., & Zhang, X. (2014). Single-mode laser by parity-time symmetry breaking. Science. https://doi.org/10.1126/science.1258479
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