Are laser communication systems and optical communications in free space same?

Laser communication systems and optical communications in free space are closely related but not identical. Laser communication typically refers to the use of laser technology for transmitting data over distances, while optical communications in free space encompasses a broader range of methods for transmitting information using light, including lasers and other optical sources. Both utilize light to convey information through the atmosphere, but laser communication specifically emphasizes the use of lasers for focused, high-bandwidth data transmission.