Phased Arrays of Vertical-Cavity Surface-Emitting Lasers as 2D Input Sources for Optical Processors

We will design, fabricate and characterze 2D phased arrays of vertical-cavity su,face-emitting lasers for use as input sources in optical processors. In Phase I we will: 1) evaluate approaches for realizing 2D phased arrays and select the most promising candidate; 2) design the material structure and fabrication process for the phased array; 3) fabricate and characterize the phased array; 4) investigate means for producing 2D phase-locked images; 5) design a processor architecture using the phased arrays; and 6) develop a plan for a Phase II prototype system and Phase III commercialization. 2D phased arrays represent an attractive alternative to spatial light modulators by having higher speed and compatibility with low voltage electronic chips. Also use of light sources rather than modulators dramatically simplifies the optical system. Phase-locked laser arrays have been demonstrated by several groups but efforts have not yet been made to incorporate them into parallel optical processing systems. PRI's experience in laser arrays and optics make the likelihood for success in this program extremely high. We will also interact closely with the contracting organization to insure a smooth technology transfer of the enabling technology into the processor under development in the Armament Directorate at Eglin AFB. Additionally, the technology developed will address many other military and commercial applications.