US Army Poised to Deploy Laser Weapons, Marking a New Era in Drone Defense

For over five decades, the United States military and its dedicated researchers have pursued the elusive goal of developing effective laser weapons, often with grand but ultimately unfulfilled ambitions. Projects ranged from stuffing a formidable real-life ray gun into a 747 to intercept ballistic missiles, to mounting a laser atop a Humvee to neutralize roadside bombs. Yet, despite persistent efforts and significant investment, none of these pioneering endeavors ever truly "panned out" into deployable, operational systems.

However, this long-standing narrative of aspiration and disappointment is finally poised for a dramatic shift. The US Army is on the brink of integrating a functional laser weapon into its official arsenal, a move that signals a profound transformation in military technology. The Pentagon is reportedly set to finalize a contract to acquire and rapidly deploy what is known as an Enduring High Energy Laser (E-HEL) system. These advanced directed-energy weapons are intended for strategic placement in and around military bases across the globe, serving as a critical defense against the escalating threat of drone attacks. Sources close to the matter suggest that an official announcement could be made as early as this week, marking an unprecedented commitment by the US military to equip its forces with laser weapons in substantial numbers.

"For years, lasers were going to be the future, and they never really came to their own. Now, they’re actually coming to their own," remarks Mark J. Lewis, the former Air Force chief scientist, underscoring the significance of this development.

The urgency driving this technological pivot has been starkly illuminated by recent conflicts, particularly in Iran and Ukraine. These theaters of war have unequivocally demonstrated that unmanned aerial vehicles (UAVs), commonly known as drones, have evolved into a threat that is simultaneously cheap, abundant, and lethally effective, proving exceedingly difficult to counter with traditional single measures. Conventional defensive strategies have often been characterized by their clunkiness and disproportionate cost. Early in the Iran conflict, the US military reportedly resorted to the highly inefficient tactic of firing $4 million Patriot missiles at $35,000 Iranian drones – an unsustainable expenditure that not only drained financial resources but also depleted America’s critical interceptor stockpiles.

In stark contrast, modern laser weapons offer a compelling advantage: an almost inexhaustible supply of "ammunition." As Lewis explains, "Basically, you can keep firing them as long as you’ve got power." While acknowledging that challenges related to rapid refire and recharge rates still exist, Lewis emphasizes that "if you solve those problems, then suddenly you’ve got a pretty nifty way to help counteract things like a drone swarm attack." This capacity for sustained engagement without the logistical burden of reloading or resupplying munitions is a game-changer in the face of massed drone assaults.

This paradigm shift explains why the US military is currently engaged in the deployment or active testing of at least a half-dozen distinct laser weapons systems, as detailed by the "Laser Wars" newsletter. The Navy, for instance, has already integrated laser "dazzlers" onto two of its vessels, designed to incapacitate enemy drones by blinding their electro-optical sensors. Concurrently, the Air Force’s command for Europe and Africa has dispatched Boeing’s Compact Laser Weapons System to various strategic locations across its operational theater. The high-level interest in these capabilities was further underscored in late June, when Defense Secretary Pete Hegseth personally visited the Army’s expansive test range in White Sands, New Mexico, to witness a comprehensive demonstration of a wide array of directed-energy weapon projects.

However, the path to widespread laser weapon deployment has not been without its bumps and occasional mishaps. Four vehicles equipped with Raytheon’s air-defense lasers were, for instance, withdrawn from the Middle East following unfavorable reviews from soldiers regarding their operational effectiveness. In another notable incident in February, a laser system built by defense contractor AeroVironment, positioned along the southern US border, inadvertently "zapped a party balloon." This unexpected event led the Federal Aviation Administration (FAA) to temporarily close the airspace around El Paso, Texas. Once the airspace was reopened, the same laser, in a further display of its potency and perhaps a momentary lapse in targeting, mistakenly shot down a Border Patrol drone.

Despite such teething problems and accidental engagements, the Army appears resolute in moving beyond mere one-off experiments and isolated deployments. Intriguingly, in some ways, the accidental downing of the Border Patrol drone served a perverse, yet crucial, purpose: it unequivocally demonstrated the laser’s capability to effectively neutralize a drone, thereby inadvertently strengthening the case for its adoption.

The Pentagon and its network of suppliers have been engaged in a frantic scramble to field any viable defense against the proliferation of mass-produced, low-cost attack drones. Their efforts have spanned a diverse range of technologies, including radio frequency jammers, microwave weapons, various missile systems, specialized drones designed to hunt and destroy other drones, and even reverse-engineered copies of Iranian unmanned aerial vehicles. Yet, in isolation, none of these solutions have proven sufficient to address the multifaceted and evolving drone threat. The gravity of this challenge was tragically underscored on March 1, when an Iranian drone successfully struck, killing six US service members and injuring 30 others.

Less than a week after this devastating attack, high-ranking officials from the Pentagon and the FAA converged on White Sands for a critical demonstration of an AeroVironment laser system. The primary objective was to receive assurances that the technology could operate safely and effectively, even within crowded airspace, as reported by The New York Times. Following the successful display, Lt. Gen Frank Lozano later publicly lauded the system, stating at a Washington D.C. think tank event that it had shown "a lot of recent promise and capability out at White Sands," further confirming that the Army was actively "negotiating a contract with AeroVironment right now for the Enduring High Energy Laser system."

Just two days after the White Sands demonstration, then-President Donald Trump publicly lauded the capabilities of directed energy weapons. Speaking to reporters at his Doral, Florida club, Trump declared, "The laser technology that we have now is incredible. It’s coming out pretty soon, where literally lasers will do the work of—at a lot less cost—do the work of what the Patriots are doing." This high-profile endorsement from the nation’s commander-in-chief further cemented the growing momentum behind laser weapon development.

Now, the Army is widely expected to sign a contract worth hundreds of millions of dollars with AeroVironment. According to the Army’s initial request for information, this procurement could encompass up to 20 of these sophisticated weapons. The E-HEL systems are designed to be remarkably compact, capable of fitting within a four-by-seven-foot container or being mounted atop an all-terrain vehicle, such as a Joint Light Tactical Vehicle (JLTV). As President Trump highlighted, these lasers are engineered to possess sufficient power to effectively neutralize one-way attack drones, including the formidable Shahed-136, a workhorse in Iran’s deadly unmanned aerial arsenal. (Neither the Army nor AeroVironment provided comments for this story.)

The truly groundbreaking aspect of this imminent deployment is that the Enduring High Energy Laser, or E-HEL, will achieve the status of an operational "program of record." In military parlance, this signifies that it is a formally approved piece of equipment, officially integrated into the Pentagon’s five-year budget projections. This designation is a critical internal signal to the military itself, confirming that the technology is deemed real and ready for widespread adoption. Furthermore, it serves as a powerful signal to defense contractors to significantly ramp up production capabilities. Craig Robin, who previously managed the directed energy portfolio for the Army’s Rapid Capabilities and Critical Technologies Office, emphasizes that "program of record indicates a wider cultural acceptance of the new technology as a military capability." This contract will mark the very first time the Army has conferred such a status upon a laser weapon.

The fundamental physics underpinning lasers have been understood for many decades. The process involves infusing an atom with sufficient energy to elevate its electrons to an "excited state," where they orbit farther from the nucleus. As these electrons return to their lower energy states, they emit photons. Critically, each emitted photon passing an already excited atom triggers it to release an identical photon—sharing the same frequency and phase. By bouncing this cascade of identical photons between mirrors, the beam continuously builds in intensity and coherence, ultimately producing a powerful, directed light beam.

The specific material, or "gain medium," used determines the light’s frequency, and a wide variety of substances can be employed. Mark Lewis humorously notes, "My own favorite is that a mixture of alcohol and quinine solution can actually be made to fluoresce, so you can actually do a laser martini." However, practical applications demand more than novelty. Different gain media yield varying levels of power and efficiency. The chemical laser aboard the 747, for instance, utilized a potent but toxic mixture of chlorine, hydrogen peroxide, and iodine. Conversely, the early laser-equipped Humvee employed a synthetic garnet crystal made of yttrium and aluminum, which was non-toxic but lacked sufficient power.

Eventually, most military laser manufacturers converged on a single, more efficient solution: "fiber lasers." These systems rely on bundles of specialized glass wires, meticulously infused with rare-earth ions. Fiber lasers excel at absorbing energy more efficiently, are superior at dissipating heat, and can produce an almost perfectly focused beam. While each individual fiber laser may not generate immense power—typically only a few kilowatts—they can be effectively bundled together to achieve weapons-grade power levels. Crucially, the relatively small drones these weapons are designed to combat do not require exceptionally high power outputs to be neutralized.

The advancements enabling these powerful fiber lasers are multifaceted. "Exciting" the atoms within these fibers has become significantly easier thanks to breakthroughs in semiconductor diodes (similar to LEDs but designed for laser light), which efficiently pump energy into the system and initiate the chain reaction. Furthermore, progress in machine vision technology has enabled laser beams to maintain a precise lock on their targets, while adaptive optics—mirrors that dynamically flex in real time—can effectively cancel out the distorting shimmer of the atmosphere, thereby keeping the beam tightly focused over distance. When all these components are integrated, the result is a truly formidable laser weapon system.

As Emil Michael, the under secretary of defense for research and engineering, informed Congress in May, "The science for directed energy is largely done, and now we are in the engineering phase of it. So the engineering part of it makes it cheaper, smaller, and more proliferated." This statement encapsulates the sentiment that the fundamental scientific hurdles have been overcome, and the focus is now on practical, scalable implementation.

Yet, this optimistic outlook is not entirely new; echoes of past predictions of a laser-dominated future resonate. "The ray gun has finally become a reality," proclaimed The New York Times in 2008. A Popular Science cover story from 2006, which this author wrote, featured illustrations of laser-firing stealth fighter jets and posed the question: "Can scientists end the era of bombs and bullets?" The answer, then and now, remains a resounding no.

Lasers still face significant operational limitations. Environmental factors like rain and fog can severely impede or entirely stop laser beams. Furthermore, current laser weapon systems generally have to engage targets one at a time, requiring several seconds per target. A rather awkward demonstration of a 60 Minutes host, Leslie Stahl, operating an AeroVironment weapon clearly illustrates this deliberate engagement process. Scott Keeney, CEO of nLight—a company supplying lasers to firms like AeroVironment and recently awarded its own Pentagon contract worth up to $627 million to develop a laser capable of taking out a cruise missile—acknowledges this challenge. "So if you’ve got 1,000 drones coming in, you’re not going to hit every single one," Keeney states. Moreover, powerful lasers, especially those he is developing, possess immense range, continuing their trajectory potentially even into orbit. "They just don’t stop," Keeney warns, raising concerns that they could pose a danger not only to aircraft but also to satellites.

In fact, Mark Lewis argues that the very idea of completely swapping traditional munitions for lasers is "really dumb." He asserts, "The gun works fine. Why would you replace it with the laser? Use the laser in ways that you can’t use the gun."

This perspective perfectly frames the strategic value of the E-HEL. The "metaphorical gun" in this scenario is a multi-million-dollar-per-shot interceptor system like the Patriot missile, and the target is a mass-produced, low-cost killer drone. In such a highly asymmetrical engagement, deploying a beam of lethal light from a laser weapon becomes not just a viable alternative, but a supremely cost-effective and strategically sound one. The US Army’s imminent deployment of the Enduring High Energy Laser represents not the end of bombs and bullets, but a crucial new chapter in military defense, leveraging directed energy where its unique advantages can be most effectively exploited.