Why Laser Beams Are the Hottest New Tech in Defense
Hosted by Joe Weisenthal and Tracy Alloway
- 53m
- Transcript
Summary
Written by a model from the transcript; not yet reviewed.
Joe Weisenthal and Tracy Alloway explore the rising reality of directed energy weapons like lasers and high-powered microwaves with Wayne Sanders, Senior Defense Research Analyst at Bloomberg Intelligence and former U.S. Army Colonel. The discussion explains how the military is shifting focus toward directed energy systems to solve the looming depletion of expensive conventional munitions, such as Patriot PAC-3 interceptors, while facing cheap threats like drone swarms. Sanders details the physics, supply chain constraints including critical minerals, power generation hurdles, and the ongoing transition from research and development to procurement in modern defense strategy.
- Directed energy weapons comprise precision laser systems and wider high-powered microwave systems designed to target electronics. 10:17
- High-powered lasers and microwaves offer a much lower cost per shot compared to multi-million-dollar exquisite interceptors. 23:48
- Critical minerals like terbium and dysprosium present a supply chain bottleneck because China maintains a dominant market share. 39:05
- The Pentagon's research and engineering department is targeting a 1 megawatt laser by 2030 to counter faster threats. 49:26
Chapters
- 0:00
- 1:47Podcast Intro and Host Greeting
Joe and Tracy introduce the episode and announce a live show in Los Angeles.
- 3:00Historical Development of Laser Weapons
The hosts trace the evolution from early chemical lasers to modern high‑energy laser programs.
- 4:24Defining Directed Energy Weapons
Wayne Sanders explains what directed energy weapons are, distinguishing lasers and microwaves.
- 13:28Power and Size Constraints of Laser Systems
Exploration of the energy, weight, and size challenges in making deployable laser weapons.
- 20:00Market Dynamics: Primes vs. Startups
How defense primes and emerging startups compete for contracts in the directed‑energy market.
- 23:45Cost and Economic Considerations for Munitions
Analysis of how cost drives decisions between expensive missiles and cheaper directed‑energy options.
- 28:00Operational Decision‑Making and Target Execution Authority
Explanation of how commanders at various levels exercise authority to engage targets.
- 32:00Future Outlook and Emerging Technologies
Speculation on next‑generation directed‑energy weapons and their potential impact on defense economics.
- 39:05Supply Chain and Critical Minerals
Discussion of rare earths, turbium, and the supply‑chain risks for laser and microwave tech.
- 47:48Transition from R&D to Procurement
Discussion of the shift from research and development to actual procurement of laser weapons, including budget figures and deployment plans.
- 50:26Scaling to 1 MW Lasers
Explanation of the technical challenges and incremental steps needed to reach 1 megawatt laser capability by 2030.
Highlights
- 10:08
Defining Directed Energy Weaponsinsight
The guest explains that directed energy weapons are split into lasers, which act like sniper rifles targeting individual objects with heat, and high-powered microwaves, which act like electronic shotguns frying multiple drone electronics simultaneously.
- 13:08
Power Sources and Static Limitationsinsight
Lasers require massive amounts of power, historically resulting in building-sized systems. Modern deployment relies heavily on shore power or vehicle-mounted generators, limiting mobility for higher-power variants.
- 17:29
Historical Context of Chemical Lasersstory
The conversation traces directed energy back to 1960s physics and the Star Wars era, noting early chemical lasers like the tactical high-energy laser that destroyed rockets in flight before being ended in 2006 due to logistics.
- 39:36
Critical Mineral Supply Chain Risksdata
China controls 85 to 90 percent of the supply chain for critical minerals like terbium, dysprosium, and neodymium, posing significant scaling challenges for both defense and commercial manufacturing.
- 40:20
Integrated Air and Missile Defensestrategy
Sanders emphasizes that directed energy and cheaper interceptors are additive rather than replacements for exquisite interceptors, which remain necessary to counter hypersonic weapons.
- 43:43
Mid-Market Defense Contractorsstrategy
While major primes scale up traditional exquisite munitions, the Department of Defense has contracted with five specific disruptor companies to build tens of thousands of mid-grade, low-cost containerized munitions.
- 46:11
Human in the Loop AI Safetyinsight
Military AI is currently utilized for staff work, data normalization, and flagging satellite imagery anomalies, but target execution authority and strike decisions remain strictly human-in-the-loop.
Quotes
“A laser is essentially a precision weapon. It concentrates energy into a narrow beam and typically attacks one target at a time.”
Unnamed speaker · 10:40 “The government accountability office notes that high powered microwave weapons can generate peak powers up to like 100 megawatts.”
Unnamed speaker · 11:00 “Absolutely. I mean, we have spent over $15 billion on the R and D up until this point, specifically to get to where we're at right now.”
Unnamed speaker · 48:06 “that is so strong that you can shoot down something that is flying at you at, you know, 1,000 miles an hour, potentially up to 4,000 to 5,000 miles an hour, as is in Mach 5 hypersonic weapon weight.”
Unnamed speaker · 50:30 “You know, you can't, a missile doesn't care if you're shooting through fog or through rain, but it does have, it does have a change to the components, if you will, of how a laser beam is actually going to go out there.”
Unnamed speaker · 53:33
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About this episode
Our guest today is Colonel Sanders. More precisely, we speak with Wayne Sanders, a retired US army colonel who is currently senior defense research analyst for Bloomberg Intelligence. During his military career, Sanders specialized in cybersecurity and weapon systems research and his work for BI has recently focused on directed energy weapon systems — better known as lasers. Just a few decades ago, programs like Star Wars, the Reagan-era missile defense system, seemed like a pipedream; today lasers can shoot down missiles and much more. Sanders tells us about the physics problems researchers had to solve to make laser weapons a reality, why we still don't have laser guns, what makes a weapons system "exquisite," the economic costs that factor into battlefield decisions, and the unique supply chain constraints that affect laser development. Read more: Weary US Sailors Lay Bare War’s Strain During Thailand Shore Leave https://www.bloomberg.com/news/features/2026-09-03/uss-abraham-lincoln-sailors-in-pattaya-tell-of-strain-after-months-at-sea?utm_medium=referral&utm_source=podcast&utm_campaign=odd_lots&utm_content=article German Navy Tests Ballistic Missile for the First Time at Sea https://www.bloomberg.com/news/articles/2026-09-02/german-navy-tests-ballistic-missile-for-the-first-time-at-sea?utm_medium=referral&utm_source=podcast&utm_campaign=odd_lots&utm_content=article Only http://Bloomberg.com subscribers can get the Odd Lots newsletter in their inbox each week, plus unlimited access to the site and app. Subscribe at bloomberg.com/subscriptions/oddlots https://www.bloomberg.com/subscriptions/oddlots?in_source=oddlotspodcast Subscribe to the Odd Lots Newsletter http://bloomberg.com/subscriptions/oddlots Join the conversation: discord.gg/oddlots https://discord.gg/oddlots See omnystudio.com/listener https://omnystudio.com/listener for privacy information.
Transcript
11,104 words · 10 speakers
Speaker names marked are inferred from speaking time and the show’s known hosts — they are not voice-verified.
Topics
- Microwave
- Directed energy
- High-energy laser
- Israel
- Navy
- Iron Beam
- Wise
- Army
- Pentagon
- 50 kilowatt laser
Page updated · transcript and summary are machine-generated