Photonic-Crystal Surface-Emitting Lasers for High-Power Free-Space Optical Communications

Photonic-crystal surface-emitting lasers (PCSELs) feature high-power single-mode lasing with narrow spectral linewidths, which are potentially suitable for long-distance free-space optical communications (FSO) such as intersatellite optical communications. In this paper, we review our recent devel-opment of PCSELs for high-power high-speed FSO communications.