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- Title
High-Power Terahertz Photonic Crystal Surface-Emitting Laser with High Beam Quality.
- Authors
Liu, Junhong; Xu, Yunfei; Li, Rusong; Zhang, Jinchuan; Zhuo, Ning; Liu, Junqi; Wang, Lijun; Cheng, Fengmin; Liu, Shuman; Liu, Fengqi; Lu, Quanyong; Zhai, Shenqiang
- Abstract
The photonic crystal surface-emitting laser (PCSEL) has attracted much attention due to the advantages of a small far-field divergence angle and high output power. Here, we report a high-power terahertz (THz) photonic crystal laser with high beam quality through the optimization of the absorption boundary condition and the introduction of the symmetrically distributed electrodes. Single-mode surface emission at 3.4 THz with the maximum peak output power of 50 mW is demonstrated. Meanwhile, a high symmetric far-field pattern with C6 symmetry and a small divergence angle is achieved. In this device, the integration of the stable single-mode operation, high beam quality and high output power is realized, which may have great significance for practical applications.
- Subjects
SOLID-state lasers; SURFACE emitting lasers; PHOTONIC crystals; LASER beams; QUANTUM cascade lasers
- Publication
Photonics, 2024, Vol 11, Issue 2, p150
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics11020150