Based on SBIR/STTR projects, an analysis of the development of laser weapons in the United States is conducted in this paper. By reviewing publicly available SBIR/STTR projects from 2016 to 2023, a total of 98 laser weapon-related technologies are summarized and selected. Combined with US military testing and integration reports, the analysis indicates that Acquisition, Tracking, and Pointing (ATP) related technologies, laser-related technologies, and transmission/environmental measurement are the focal points of the US laser weapon system development. In-depth analysis of the project metrics are also conducted in relation to publicly known U.S. laser weapon projects, with a focus on submarine-based laser weapons and U.S. LLD laser weapon system metrics. Through the tracking and analysis of SBIR/STTR laser-related projects, the development strategy and approaches to technical issues of US laser weapons are summarized, providing information support for the development and problem-solving solutions of relevant technologies in the country.