Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers

Ziye Wang; Xia Liu; Pinyao Wang; Huanyu Lu; Bo Meng; Wei Zhang; Lijie Wang; Yanjing Wang; Cunzhu Tong

doi:10.1038/s41377-024-01387-4

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Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers

Original Articles

- Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers
- Light: Science & Applications Vol. 13, Issue 3, Pages: 446-453(2024)
- Affiliations：
  
  1.State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  3.Central Research Institute Planning Dept, 2012 Labs, Huawei Technologies Company Ltd., Shenzhen 518129, China
- Author bio：
  
  Cunzhu Tong (tongcz@ciomp.ac.cn)
- Funds：
- DOI：10.1038/s41377-024-01387-4
  CLC：
- Received：29 August 2023，
  
  Revised：31 December 2023，
  
  Accepted：2024-01-16，
  
  Published Online：05 February 2024，
  
  Published：31 March 2024
- Accepted：
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Wang, Z. Y. et al. Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers.,Light: Science & Applications, 13, 446-453 (2024).
DOI：

Wang, Z. Y. et al. Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers.,Light: Science & Applications, 13, 446-453 (2024). DOI： 10.1038/s41377-024-01387-4.

摘要

Abstract

Benefitting from narrow beam divergence

photonic crystal surface-emitting lasers are expected to play an essential role in the ever-growing fields of optical communication and light detection and ranging. Lasers operating with 1.55 μm wavelengths have attracted particular attention due to their minimum fiber loss and high eye-safe threshold. However

high interband absorption significantly decreases their performance at this 1.55 μm wavelength. Therefore

stronger optical feedback is needed to reduce their threshold and thus improve the output power. Toward this goal

photonic-crystal resonators with deep holes and high dielectric contrast are often used. Nevertheless

the relevant techniques for high-contrast photonic crystals inevitably complicate fabrication and reduce the final yield. In this paper

we demonstrate the first continuous-wave operation of 1.55 μm photonic-crystal surface-emitting lasers by using a 'triple-lattice photonic-crystal resonator'

which superimposes three lattice point groups to increase the strength of in-plane optical feedback. Using this geometry

the in-plane 180° coupling can be enhanced threefold compared to the normal single-lattice structure. Detailed theoretical and experimental investigations demonstrate the much lower threshold current density of this structure compared to 'single-lattice' and 'double-lattice' photonic-crystal resonators

verifying our design principles. Our findings provide a new strategy for photonic crystal laser miniaturization

which is crucial for realizing their use in future high-speed applications.

关键词

Keywords

references

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