Laser defense is becoming a drone problem, not just a drone weapon
For years, military planners have treated high-energy lasers primarily as a way to shoot down drones. The basic attraction is obvious: a beam that can deliver destructive energy at the speed of light, with deep magazines limited more by power and thermal management than by conventional ammunition. The United States has invested heavily in that offensive side of the equation.
What it has spent far less time on, according to the source material, is the inverse problem: what happens when adversaries can use lasers against U.S. drones. That gap is becoming harder to ignore as other countries field or expand directed-energy arsenals. The source text points specifically to China’s growing inventory of laser weapons reportedly capable of destroying drones at ranges up to 25 kilometers, Russia’s Peresvet system, and wider global proliferation through domestic development and export markets.
The emerging answer inside the U.S. defense ecosystem has a name: counter-directed energy weapons, or CDEW. The field remains early. The source text says no dedicated CDEW system is publicly known to have been fielded, and much of the work is still conceptual. Even so, a 2023 study in the Journal of Directed Energy by researchers at the U.S. Naval Postgraduate School offers one of the clearest public looks at what defending a drone from a laser attack could involve.
Why drones are especially exposed
The Naval Postgraduate School team focused on naval unmanned aerial vehicles, which makes sense for both operational and engineering reasons. Drones are built to operate close to danger, and many are increasingly designed to be attritable rather than heavily protected. That combination creates an obvious vulnerability to a weapon optimized for sustained energy delivery.
Unlike a warship or armored ground vehicle, most drones do not carry meaningful armor. Their appeal comes from persistence, reach, flexibility, and often lower unit cost. Those same characteristics leave them exposed when a hostile system can hold a beam on critical components for even a short period. The source material notes that the same laser-threat logic applies more broadly to manned aircraft, ships, missiles, satellites, and ground vehicles, but drones sit at the sharp end of the risk spectrum.
To examine that vulnerability, the researchers assessed four representative systems: the MQ-4C Triton as a large broad-area maritime surveillance drone, the X-47B demonstrator as a large combat drone, the MQ-8C Fire Scout as a rotary-wing Group 4 platform, and a small Group 2 tactical ISR drone associated with ScanEagle-class operations. The conclusion was stark. Against a 100-kilowatt laser and with no countermeasures in place, three of the four drones were assessed as destroyed after only a few seconds of irradiation.
Only the large high-altitude surveillance platform survived in the modeled scenario, and it did so largely because of distance. Operating at extreme altitude and very long ranges from the threat reduced the energy delivered to the target enough to preserve the aircraft. That result highlights a basic fact about directed-energy combat: geometry and range are as important as the nominal power of the weapon.
Countermeasures are likely to be layered, not singular
The source material suggests that defending drones against lasers will not come down to one magic coating or one simple design tweak. Because lasers lose effectiveness over distance and are influenced by operational conditions, survivability becomes a systems problem. Designers may need to think in terms of layered defenses that combine platform design, tactics, and mission planning.
Even within the limited public picture, the implication is clear. Larger drones with altitude, stand-off range, or mission profiles that keep them farther from a laser source may enjoy a significant advantage. Smaller drones, especially those that must operate close to the threat, face much tighter survival margins. That is a serious issue because many current military concepts rely on exactly those smaller, lower-cost systems to provide reconnaissance, sensing, or mass in contested environments.
The importance of CDEW, then, is not merely technical. It reaches into force structure and procurement. If drones become central to naval and joint operations, and if adversaries can burn them down in seconds, then survivability assumptions must change. Commanders may need to treat directed-energy exposure as a baseline threat in the same way that radar, jamming, or missile defense shaped earlier generations of platform design.
A new planning problem for drone-heavy warfare
The source article presents this as a neglected but increasingly urgent issue. That framing matters because drone warfare is often discussed in terms of autonomy, swarming, electronic warfare, and kinetic air defense. Laser vulnerability adds another layer, one that is less visible than a missile intercept but potentially just as consequential. A weapon that can engage rapidly and repeatedly without traditional ammunition expenditure could put sustained pressure on drone fleets, especially during maritime operations where lines of sight may be favorable.
The U.S. military’s challenge is that counter-laser defense does not yet appear mature in public view. If no dedicated system is publicly fielded, then the near-term task is likely to be a mix of analysis, prototyping, and doctrinal adaptation. The Naval Postgraduate School study provides a framework for that work by grounding the problem in representative drone classes and a specific threat model rather than discussing laser warfare only in abstract terms.
That alone is significant. Defense innovation often stalls when a threat remains too conceptual to shape acquisition choices. By showing how quickly several representative drones could be lost to a 100-kilowatt laser absent countermeasures, the study gives planners something concrete to respond to. It turns a futuristic concern into an engineering and operational requirement.
The broader implication is that the drone era is maturing into a contest of countermeasures. Cheap airframes, autonomy, and mass remain important, but so does resilience against increasingly diverse forms of attack. The more laser weapons spread, the less viable it becomes to assume that drones can survive simply by being small, numerous, or expendable.
For the Pentagon, that means the laser competition is no longer only about fielding beams of its own. It is also about protecting the drones that modern military operations increasingly depend on. The public evidence remains preliminary, and much of the work is still conceptual. But the strategic direction is unmistakable: in a battlefield shaped by proliferating directed-energy weapons, drone survivability is becoming a central design problem rather than an afterthought.
This article is based on reporting by Fast Company. Read the original article.
Originally published on fastcompany.com
