What we know about the US military’s new joint laser weapon system

Editor’s note: This story originally appeared on Laser Wars, a newsletter about military laser weapons and other futuristic defense technology. Subscribe here.

The cruise missile-killing high-energy laser weapon the U.S. Defense Department envisions as part of its “Golden Dome for America” domestic missile defense shield is beginning to take shape.

The new Joint Laser Weapon System — a collaboration between the U.S. Army and U.S. Navy that Laser Wars first reported about in June 2025 — will initially consist of a containerized 150-kilowatt system with the potential to scale to at least 300kw to defeat incoming cruise missile threats, according to the Navy’s fiscal 2027 budget request.

The system will also include a Joint Beam Control System “capable of supporting” a 300-500kw laser weapon, the documents say.

The JLWS effort will leverage research and development lessons from the Navy’s 60kw High Energy Laser with Integrated Optical-Dazzler and Surveillance (HELIOS) system, which is currently installed on the Arleigh Burke-class guided missile destroyer USS Preble, and the Army’s 300 kw Indirect Fire Protection Capability-High Energy Laser (IFPC-HEL) system, the first prototype of which the service plans on taking delivery of later this year.

The Navy will also “conduct upgrades” to its High Energy Laser Counter Anti-Ship Cruise Missile Project (HELCAP) test bed “as appropriate” in support of future JLWS testing.

While last year’s Army budget request detailed $51 million in mandatory funding for JLWS through the One Big Beautiful Bill Act reconciliation bill under its Expanded Mission Area Missile program element, this year’s request does not contain any R&D funding for fiscal 2027. Instead, the proposal details plans for $337.8 million in spending starting in fiscal 2028 and running through fiscal 2031.

Based on the budget documents, it looks as though the service plans on closing out its IFPC-HEL activities first before kicking off its part of the JLWS effort.

The Navy, however, isn’t waiting around.

The service requested $94.825 million under its Directed Energy and Electric Weapon Systems program element in fiscal 2027 — up from just $14.5 million in fiscal 2026, as Laser Wars previously reported.

That amount includes $79.84 million under its Surface Navy Laser Weapon System effort to jumpstart JLWS R&D, sustain the service’s lone HELIOS system for future testing activities and upgrade the HELCAP test bed, which is also receiving a separate $14.978 injection, according to the service’s budget request.

The service plans on investing an additional $243.3 million into JLWS R&D under that program element through fiscal 2031.

Together, the Army and Navy requests total a vision of $675.93 million in R&D spending for the JLWS through fiscal 2031. The Navy plans on awarding $31.7 million in contracts for JBCS development as soon as the fourth quarter of 2026 and the $30 million in contracts for the procurement and testing of containerized JLWS by March 2027, according to budget documents.

It seems likely that Lockheed Martin will receive those contract. Not only is the defense prime the technical lead on both the HELIOS and IFPC-HEL efforts that will inform the JLWS, but it’s also already developing a containerized version of the former, a company executive revealed in August 2025.

While the Pentagon’s fiscal 2027 budget request also contains $452 million in R&D spending for the “development, integration, and assessment” of directed energy weapons in support of Golden Dome, the exact relationship with the Army and Navy’s JLWS efforts is unclear.

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