Efficient, Scalable, High Power, Multi-Frequency Blue Diode Laser Array for Underwater Applications
Abstract
321 [Wardlaw, Michael] Approved for Public ReleaseThe Navy needs blue laser sources capable of emitting at the power range of O (100, W) or higher efficiently and at a narrow linewidth. Such a source could be used for a wide variety of applications including underw,ater sensing and underwater communications. Our assessment is that blue diode laser fabrication technology is now ready to meet the,requirements of building a compact blue laser source that can emit in the power range of hundreds of watts to KWs, provide an excell,ent beam quality and narrow linewidth, and very high wall-plug efficiency O (in the range of 25-30% or higher).We are designing and,building blue laser communication source for underwater applications such as sensing and communications (ONR Grants # N00014-20-1-20,30). Our current design is based on blue, high-power, broad-area diode array emitting 450 nm light. Our laser system will operate at, pulsed, CW, and frequency modulated regimes beam combined in one narrow beam for underwater propagation. We are employing OSRAM arr,ay that consists of 23 high-power, broad-area blue diodes, each emitting approximately 2 W of power at electro-optical efficiency of, 30-40%. The total maximum power from one array is 50 W. These arrays can be stacked to ramp emission power to the level of KWs. We,are requesting funds to purchase equipment that would enhance the quality of our work and research-related education of currently fu,nded by DoD projects, will establish new capabilities, enhance our current capabilities, and facilitate delivery of an excellent bea,m quality, high-efficiency, and high-power laser source for underwater applications. Specifically, we request funds for the followin,g equipment: (1) High resolution optical spectrum analyzer; (2) Spatial light modulator; (3) Equipment for MPLS assembly; (4) Diode,array current driver capable of driving large 2-dimensional stacked diode arrays, and (5) High-speed multichannel oscilloscope. This, equipment, in addition to our currently existing equipment, would advance our experimental work and would allow us to better unders,tand phase locking of high-power, broad-area blue diode array and consequently build a blue laser source for underwater applications,.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 05, 2022
- Source ID
- N000142212197
Entities
People
- Y. Braiman
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees