Sep, 2019
Progress in Photonic-Crystal Surface-Emitting Lasers
PHOTONICS
- ,
- ,
- Volume
- 6
- Number
- 3
- Language
- English
- Publishing type
- DOI
- 10.3390/photonics6030096
- Publisher
- MDPI
Photonic-crystal surface-emitting lasers (PCSELs) have attracted considerable attention as a novel semiconductor laser that surpasses traditional semiconductor lasers. In this review article, we review the current progress of PCSELs, including the demonstration of large-area coherent oscillation, the control of beam patterns, the demonstration of beam steering, and the realization of watt-class and high-beam-quality operation. Furthermore, we show very recent progress in the exploration of high brightness of more than 300 MW cm(-2) sr(-1), obtained with a high output power of about 10 W while maintaining a high beam quality M-2 similar to 2. The PCSELs with such high performances are expected to be applied to a variety of fields, such as laser-based material processing, optical sensing (light-detection and ranging (LiDAR)), and lighting, as they retain the benefits of compact and high-efficiency semiconductor lasers.
- Link information
- ID information
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- DOI : 10.3390/photonics6030096
- eISSN : 2304-6732
- Web of Science ID : WOS:000488009300004