The world’s leading defence companies are investing heavily in the development of low-cost laser weapons to fight drones. As the Financial Times noted, these include leading contractors such as the US aerospace and defence manufacturer RTX Corporation, British multinational defence company QinetiQ, and leading European missile systems designer and manufacturer MBDA. According to reports, these companies are investing heavily in advanced technologies that have long been considered more science fiction than reality.

The race to develop weapons that use laser beams to cut metal and destroy electronics is becoming increasingly urgent as governments try to find more cost-effective ways to combat cheap drones and missiles. Experts say that the rise in drone warfare has highlighted the “cost asymmetry” that military strategists face when defence spending outstrips offensive spending.

However, experts emphasize that even when fully developed, laser and other directed energy weapons should be seen as an additional capability on the battlefield rather than a complete solution to modern threats.

A growing need for cost-effective countermeasures

The increasing prevalence of drones in military and even civilian contexts has prompted urgent interest in developing countermeasures that are both effective and economical. Small, commercially available unmanned aerial vehicles (UAVs) have proven capable of causing significant disruption and damage, making it essential for governments to adopt strategies that do not exhaust their defence budgets. A fundamental issue is the cost imbalance: cheap drones, which can be manufactured for a few hundred dollars, are often countered by expensive traditional missile systems that cost thousands or even millions of dollars per engagement.

Laser weapons are emerging as a potential solution to this problem. Since they rely on focused energy rather than ammunition, the cost per shot is significantly lower compared to conventional missile interceptors. This cost-effectiveness is a significant advantage in defending against swarms of drones, which have become an increasingly common threat. Swarm tactics, where multiple drones attack simultaneously, can easily overwhelm traditional defences that rely on limited numbers of expensive interceptors.

A notable example of the use of drones in military conflict is the 2020 Nagorno-Karabakh war, where both sides extensively used drones to gain tactical advantages. The conflict demonstrated how quickly the nature of warfare is evolving and underscored the need for innovative defensive solutions like laser weapon systems.

How laser weapons work

Laser weapons utilize directed beams of high-energy light to disable or destroy targets. These beams are generated by sophisticated systems that amplify light to create a coherent, high-intensity stream. Depending on the specific configuration and energy output, laser weapons can either physically cut through metal surfaces or generate enough heat to disable the target’s electronics.

One of the main challenges in developing laser weapons is generating sufficient energy in a portable form. While smaller systems can be mounted on ships or ground vehicles, developing airborne or handheld versions presents significant technical obstacles. A major technological breakthrough was made with the use of solid-state lasers, which offer a more compact and reliable energy source compared to earlier chemical-based lasers.

For example, the High Energy Laser and Integrated Optical-dazzler with Surveillance (HELIOS) system is being developed by the US Navy as a ship-based defence mechanism to protect against drone and missile threats. HELIOS integrates a high-energy laser with surveillance capabilities to provide a multi-layered defence solution, highlighting the versatility of laser technologies.

The role of directed energy in modern defence

Directed energy weapons, including high-power microwaves and lasers, are increasingly seen as crucial components of future defence arsenals. Unlike conventional kinetic weapons, directed energy weapons (DEWs) can engage multiple targets in rapid succession without the need for reloading, making them ideal for situations where there are multiple threats, such as drone swarms. Furthermore, because they operate at the speed of light, DEWs offer a near-instantaneous response to threats, which is particularly important in intercepting fast-moving targets.

In addition to lasers, high-power microwave (HPM) systems are also being developed as anti-drone measures. HPM weapons use electromagnetic pulses to disrupt or destroy the electronic systems within a drone, effectively neutralising it without the need for direct physical damage. One prominent example is the THOR (Tactical High-power Operational Responder), a system developed by the US Air Force to address the growing drone threat. THOR uses directed microwave energy to disable drones at a distance, demonstrating another approach to tackling low-cost aerial threats.

Challenges and limitations

Despite the promising potential of laser and directed energy weapons, there are still significant challenges that need to be addressed before they can be widely deployed. One of the biggest limitations is power supply. Current laser systems require a substantial amount of energy to operate effectively, which limits their mobility. For instance, while a ship can generate enough power for laser weapons, integrating these systems onto smaller vehicles or aircraft remains a formidable challenge.

Another critical limitation is the effect of atmospheric conditions on laser performance. Factors like dust, rain, or smoke can scatter or absorb laser energy, reducing the effectiveness of the weapon. This makes laser weapons less reliable in adverse weather conditions compared to traditional projectile-based weapons. Researchers are actively working on mitigating these issues through advanced targeting systems and adaptive optics, but these solutions are still in the experimental stage.

Moreover, directed energy weapons are currently seen as complementary to existing missile defence systems rather than a replacement. This is due to their inability, at present, to effectively counter all types of threats. High-speed ballistic missiles, for example, require an enormous amount of energy to neutralise, which is currently beyond the capability of most laser systems.

Future prospects for laser weapons

While the deployment of laser weapons is still in its early stages, many defence experts believe that these systems will become a standard component of military arsenals within the next decade. The Israeli Ministry of Defense recently announced plans to integrate laser technology into its existing Iron Dome missile defence system, adding an additional layer of protection against short-range rockets and drones. This project, named “Iron Beam”, represents one of the most advanced efforts to incorporate laser weaponry into national defence.

Additionally, laser technology is being explored for use beyond the battlefield. There are ongoing research projects focused on utilising lasers for non-lethal purposes, such as disabling enemy optics or communication systems. These types of developments could pave the way for a broader application of laser systems, extending their utility to law enforcement and border security.

The rapid advancements in related technologies, such as improved battery storage and more efficient semiconductors, are expected to significantly boost the feasibility of deploying laser systems in various military scenarios. These innovations could potentially solve the current power limitations and make laser systems more versatile and mobile.

The development of laser weapons to counter drones represents a significant step forward in military technology, driven by the need for cost-effective and efficient defence systems. While current technological hurdles remain, ongoing advancements suggest a promising future for these directed energy weapons. They will likely serve as crucial additions to conventional defence methods, providing a versatile solution capable of addressing the increasing complexity of modern aerial threats.

It is evident that laser technology, once confined to the realm of science fiction, is gradually being realised as a practical tool on the battlefield. Continued research and development are essential to overcome the existing challenges and fully unlock the potential of these advanced systems. For governments and defence companies, the race to perfect laser weapons is not just about staying ahead in technological innovation—it is about ensuring that future defence capabilities remain adaptable and cost-effective in the face of evolving threats.

Note: Laser weapon systems are still under development and their integration into military forces is at varying levels of readiness. As with any emerging technology, ethical considerations and international regulations will play an important role in shaping the future use of directed energy in conflict scenarios.

Source: ria.ru