China Controls 95-98% of Global Gallium Supply Used in Night Vision Photocathodes

Gen III night vision tubes depend on gallium arsenide (GaAs) photocathodes — the light-sensitive surface that converts photons into electrons for amplification. Gallium is the critical raw material, and China produces approximately 95-98% of the world's gallium as a byproduct of aluminum refining. In July 2023, China imposed export controls on gallium and germanium, requiring licenses for export. This means the foundational material for Western military night vision superiority flows through a supply chain controlled by a strategic competitor. The immediate risk is supply disruption. If China restricts or halts gallium exports during a geopolitical crisis — particularly a Taiwan contingency — Western Gen III tube production could stall within months as existing gallium stockpiles are consumed. The U.S. National Defense Stockpile does not hold sufficient gallium reserves to sustain wartime production rates. L3Harris and Elbit cannot manufacture photocathodes without high-purity gallium arsenide wafers, and there is no rapid alternative source at the required volume and purity. Beyond night vision, gallium arsenide is used in 5G infrastructure, satellite communications, missile seekers, electronic warfare systems, and solar cells for spacecraft. Demand is projected to drive the GaAs wafer market from $1.14 billion in 2024 to over $3 billion by 2034. Night vision competes for the same limited gallium supply as every other defense and commercial application, and the defense sector's purchasing power is small relative to the telecom industry. This vulnerability persists because gallium is not mined directly — it is extracted as a trace byproduct from bauxite ore during aluminum smelting. China's dominance comes not from geological reserves but from its massive aluminum refining infrastructure. Rebuilding gallium extraction capacity outside China requires building aluminum smelters, which takes 5-10 years and billions of dollars, and faces environmental permitting challenges in Western nations. Recycling and alternative extraction methods exist but operate at a fraction of the needed scale. The U.S. Department of Defense has funded gallium supply chain studies, but actual production diversification remains years away from meaningful output.