A5068125343- Quantum Mechanics and Non-Hermitian Physics
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Solid State Laser Technologies
- Perovskite Materials and Applications
- Strong Light-Matter Interactions
- Optical Wireless Communication Technologies
- Nonlinear Waves and Solitons
- Nonlinear Photonic Systems
- Neural Networks and Reservoir Computing
Peking University
2021-2023
Beijing Academy of Quantum Information Sciences
2023
Collaborative Innovation Center of Quantum Matter
2023
The on-chip integrated visible microlaser is a core unit of high-speed visible-light communication with huge bandwidth resources, which needs robustness against fabrication errors, compressible linewidth, reducible threshold, and in-plane emission. However, until now, it has been great challenge to meet these requirements simultaneously. Here, we report scalable strategy realize robust further improved lasing performances enabled by the increased orders (n) exceptional surfaces,...
A perovskite microlaser is potentially valuable for integrated photonics due to its excellent properties. The artificial microlasers were mostly made on polycrystalline films. Though a single crystal has significantly improved properties in comparison with counterpart, an based single-crystal been much less explored the difficulty producing ultrathin-single-crystal (UTSC) film. Here we show device processing UTSC film, confirming high performance of quality factor 1250. shows 4.5 times and 8...
In this study, we design novel single-mode lasers based on non-Hermitian physics to avoid inadequate mode performance when the free spectral range is small. The perovskite microlaser, consisting of two partly fused microdisks, presented here. Spontaneous symmetry breaking occurs under uniform pumping, which results in directional lasing at a visible with an improved side-mode suppression ratio. addition, wide pump becomes applicable due microcavity property, where single stable even 2.4...
With tunable wavelength and low lasing threshold, organo-lead perovskites have become promising candidates as sources, such microlasers for optical integration. It is essential to understand their mechanism control the behavior at an ultrafast time scale. In this work, we prepared a series of square MAPbBr3 single-crystalline microcavities with/without Bragg reflectors. The transient mode was found be size-dependent, i.e., stronger red shift slower decay occurred in larger microplates. This...
Supersymmetry (SUSY) laser array with superpartner structure can suppress excess modes to achieve high‐intensity and high‐coherent radiation. Compared complex superpartner, using parity time (PT) symmetry broken manipulate SUSY arrays is a more flexible approach. Herein, based on ultrathin perovskite single crystal, constructed without but auxiliary gain–loss structure. PT high‐order exceptional point (EP) realized in the visible spectral range. It intrinsically avoids field mismatch...
We report a scalable strategy to realize robust on-chip integrated microlaser source with simultaneous in-plane emission, linewidth compression, and pump energy utilization improvement based on different orders of exceptional surfaces (ESs).