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The rapid spread of small drones has created a new challenge for military forces. Quadcopters and other lightweight unmanned aircraft can conduct reconnaissance, direct artillery fire, and even carry explosive payloads. While larger air-defense systems can counter these threats, they are often vehicle-mounted, expensive, and not always available to troops operating on foot.
A newly unveiled Chinese laser-based counter-drone system (part of the Lijian range of lasers by Harbin Xinguang Optic-Electronics Technology) seeks to move directed-energy technology much closer to the front line. Unlike traditional laser weapons that require large vehicles or fixed installations, the new system is designed to be carried and deployed by a single soldier.
The weapon belongs to a family of directed-energy systems developed specifically for counter-drone missions. Its purpose is straightforward: focus a high-energy laser beam onto a drone long enough to damage critical components. Depending on where the beam is concentrated, it can overheat batteries, disable sensors and cameras, or damage electronic systems, eventually causing the aircraft to lose functionality.
What makes the system notable is its size. According to Interesting Engineering, existing laser weapons often require substantial power supplies, cooling systems, and supporting infrastructure. The new design reduces that footprint enough to create a man-portable configuration weighing roughly 25 to 30 kilograms, depending on the variant.
The portable architecture is expected to include a backpack containing power and cooling equipment connected to a compact firing unit. Once deployed, the system can visually acquire and track aerial targets before directing energy toward them.
One of the technical challenges for portable laser systems is heat management. High-energy lasers generate significant amounts of waste heat that must be dissipated efficiently. Reports surrounding the system suggest rapid cooling between engagements, although technical details have not been publicly released.
From a defense perspective, portable directed-energy weapons could provide infantry units with a new option for countering drones without relying on missiles or large air-defense systems. Unlike traditional interceptors, laser weapons do not require physical ammunition and may offer a lower cost per engagement.
However, directed-energy systems also have limitations. Weather conditions such as rain, fog, smoke, and dust can reduce effectiveness by scattering the laser beam. They also require a direct line of sight and sufficient time on target to achieve the desired effect.
Despite those challenges, the development reflects the broader trend toward smaller, more deployable counter-drone technologies designed to accompany forces operating in increasingly drone-saturated environments.
