Maxwell Labs
Maxwell Labs is a Saint Paul, MN deep-tech photonics company developing a laser-driven Photonic Cold Plate that extracts heat from semiconductors via anti-Stokes fluorescence, delivering 1,000+ W/mm² cooling for AI accelerators, GPUs, defense electronics, and HPC systems.
- Company typePrivate
- Founded2021
- HeadquartersSaint Paul, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Maxwell Labs does
Maxwell Labs (Maxwell Labs, Inc.) is a Saint Paul, Minnesota-based deep-tech photonics company developing a Photonic Cooling Platform that uses laser-driven anti-Stokes fluorescence to extract heat directly from semiconductor lattices and convert it into light. The core Photonic Cold Plate sits directly on the chip package, with inverse-designed nanophotonic thin-film pixels absorbing low-energy photons and re-emitting higher-energy photons that carry away lattice heat permanently; a downstream photovoltaic laser power converter recovers ~85% of extracted energy as electricity. The system integrates five components — high-power pump laser, ultra-low-loss fiber optic delivery, waveguide optical bus for nanoscale precision routing, the photonic cold plate itself, and the energy recovery converter — delivering 1,000+ W/mm² cooling power density versus ~10 W/mm² for conventional liquid cooling. The platform is being developed for AI accelerators, GPUs, HPC systems, defense electronics (radar, directed energy, avionics), mobile/edge AI, and longer-term quantum, space, and power electronics applications.
The company operates a 3-phase Early Access Program — Pre-License Pilot (performance modeling, 3-6 months), Evaluation Demo (live hardware demonstration), and Integration Pre-Order (full-scale system integration) — sold on custom-quoted multi-year contracts with exclusive partner rights limited to one customer per segment. Revenue is generated through hardware system sales, licensing/pre-licensing arrangements, and CRADA-based technology partnerships with national laboratories. Current customer and partner base is concentrated in U.S. government and defense: U.S. Department of War, U.S. Army DEVCOM ARL ($500K BEST START grant), U.S. Air Force AFWERX (Phase I SBIR), Sandia National Laboratories, University of New Mexico, University of St. Thomas, and Princeton/MIT for academic collaboration. To date Maxwell Labs has raised $9.7M from 30+ investors across seed, government grants, and recent institutional rounds led by Groove Capital, holds 7 patent families, and is at TRL 4-5 with a working lab prototype in Little Canada, MN — advancing toward TRL 7-8 pilot and first commercial demonstration.
Maxwell Labs firmographics
Firmographics- Name
- Maxwell Labs
- Legal name
- Maxwell Labs, Inc.
- Website
- https://mxllabs.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Maxwell Labs is a Saint Paul, MN deep-tech photonics company developing a laser-driven Photonic Cold Plate that extracts heat from semiconductors via anti-Stokes fluorescence, delivering 1,000+ W/mm² cooling for AI accelerators, GPUs, defense electronics, and HPC systems.
- Ownership category
- akta.pro rank
Maxwell Labs industry classification
Industry- Product category
- Photonic Thermal Management for Semiconductors
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)
- SIC
- Optical Instruments & Lenses (3827)
- akta.pro primary industry
- HPC Cooling, Power & Infrastructure (Liquid Cooling, Racks, Power Delivery) (HDACAOAI)
- akta.pro secondary industry
- AI Datacenter Power, Cooling & Racks (liquid cooling, power delivery) (HDAAAAAH)
Keywords
Where Maxwell Labs is headquartered
LocationHeadquarters
- HQ city
- Saint Paul
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Maxwell Labs business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales
Revenue model
- Photonic Cooling System Sales: Sale of integrated photonic cooling systems including photonic cold plates, laser modules, optical routing, and energy recovery components. The system is sold as a complete solution for chip-level thermal management targeting AI accelerators, GPUs, and HPC systems.
- Early Access Program Licensing: Pre-licensing opportunities through a 3-phase Early Access Program offering performance modeling, live demonstrations on real hardware, and integration pre-orders. Provides exclusive partner rights and first-mover positioning ahead of general availability.
- Technology Partnership & Integration: Partnership-based commercialization through CRADA agreements and collaborative development with national laboratories and defense agencies. Includes co-development of application-specific cooling solutions for defense, aerospace, and commercial deployments.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Pre-License Pilot - Performance modeling and simulation customized to customer hardware |
| Other | Multi-year contract | Evaluation Demo - Live demonstration on real hardware in partner environment |
| Other | Multi-year contract | Integration Pre-Order - Full-scale integration into customer hardware environment |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
Maxwell Labs product offering
Product offeringCore offering
Maxwell Labs develops and sells a Photonic Cooling Platform that uses laser-driven anti-Stokes fluorescence to extract heat directly from semiconductor chips and convert it into light, delivering over 1,000 W/mm² of cooling power density. The integrated five-component system includes a high-power pump laser, fiber optic cables, photonic interconnects, the Photonic Cold Plate, and a laser power converter that recovers approximately 85% of the extracted heat as usable electricity. The platform is sold through a three-phase Early Access Program targeting data centers, AI accelerator manufacturers, defense integrators, and HPC operators.
Product overview
Maxwell Labs offers a unified Photonic Cooling Platform centered on its proprietary Photonic Cold Plate technology. The platform uses laser-driven anti-Stokes fluorescence to extract heat directly from semiconductor lattices and convert it into light, with energy recovery via photovoltaic conversion. The Gen1 Photonic Cooling System represents the first commercial generation, offered through a 3-phase Early Access Program (Pre-License Pilot, Evaluation Demo, Integration Pre-Order) targeting data centers, AI accelerators, defense systems, and HPC environments. The system integrates five core components: high-power pump laser, fiber optic delivery, photonic interconnects for precision hotspot routing, the photonic cold plate, and laser power converter for energy recovery.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- 1,000+ W/mm² cooling power density vs. 10 W/mm² for liquid cooling - enabling chip designs previously thermally impossible
- +6 more outcomes
Companies that use Maxwell Labs
Customer profileNamed customers3 records
Segments6 records
Ideal customer profiles3 records
Maxwell Labs technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Maxwell Labs partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- University of St. ThomascoreBEST START program collaboration providing access to Center for Advanced Manufacturing, Center for Microgrid Research, and faculty expertise in System Modeling & Simulation and Novel Electrical & Optical Sensing. Students gain hands-on experience in fiber laser technology, optical cooling, and mathematical modeling.
- U.S. Army Combat Capabilities Development Command Army Research Laboratory (DEVCOM ARL)core$500,000 BEST START program award to demonstrate laser cooling efficacy on high-density GPU systems. Validation of photonic cooling for military and defense applications. Government funding through Army's research laboratory.
- Sandia National LaboratoriescoreCooperative Research and Development Agreement (CRADA) for fabrication of high-purity gallium arsenide-based photonic devices via molecular beam epitaxy. Sandia's expertise in semiconductors and role in CINT (DOE Office of Science user facility) ensures precision and purity required for photonic cooling system. Active collaboration on inverse-designed nanophotonic structures, fabrication, and characterization.
- University of New MexicocoreCRADA partner providing thermal performance evaluation of resulting photonic cooling systems. Collaboration on photonic cooling physics and materials development.
- U.S. Air Force / AFWERXcorePhase I SBIR grant recipient for Super-Planckian Radiative Heatsink technology development. Air Force validation of photonic cooling technology for aerospace applications.
- Princeton UniversitycoreHome institution of CTO Dr. Alejandro Rodriguez. Academic collaboration on photonic cooling physics, materials science, and advanced nanophotonic structures research.
- MITcoreAcademic affiliation of CTO Dr. Alejandro Rodriguez (PhD Physics, MIT) and Harvard SEAS postdoctoral fellowship. Collaboration on photonics and quantum sciences research.
- Center for Integrated Nanotechnologies (CINT)coreDOE Office of Science user facility partnership providing world-class nanofabrication access and advanced photonic structure characterization. Sandia's role in CINT ensures national laboratory-scale fabrication capabilities.
- Energetics Technology Center (ETC)minor501(c)(3) nonprofit advancing national security through innovative research. Partners with DEVCOM ARL and UST on BEST START program, facilitating technology demonstrations addressing Army energy requirements.
Scale indicators12 records
Recent moves6 records
Expansion highlights5 records
Maxwell Labs competitors and assessment
Company assessmentDirect peers
- CoolIT Systems: CoolIT Systems is a leading provider of direct-to-chip liquid cooling solutions for AI, HPC, and data center customers — Maxwell Labs' most direct competitor in chip-level thermal management. Both companies target the same hyperscalers, OEMs, and HPC operators, but CoolIT relies on conventional fluid-based cooling while Maxwell Labs is building a fundamentally different solid-state photonic alternative.
- Asetek: Asetek is a publicly listed provider of liquid cooling solutions for gaming, workstations, and increasingly data centers and HPC. Like Maxwell Labs, it targets chip-level thermal management for high-performance computing, but its direct-to-chip cold plates use fluid loops whereas Maxwell Labs' photonic cold plate uses lasers — making Asetek the closest incumbent analogue competing for the same thermal envelope.
- Iceotope Technologies: Iceotope provides precision liquid cooling solutions purpose-built for HPC, AI, and edge computing deployments in sealed, immersion-style enclosures. It directly competes with Maxwell Labs in delivering high-density chip cooling for hyperscalers and HPC operators, but relies on dielectric fluid cooling rather than photonic anti-Stokes fluorescence.
- Submer: Submer provides immersion cooling systems for hyperscale and enterprise data centers, targeting the same AI/HPC compute thermal crisis Maxwell Labs addresses. Both companies sell into hyperscalers and HPC operators pursuing >1 MW rack densities, but Submer's single- and two-phase immersion approach is fundamentally different from Maxwell Labs' solid-state photonic platform.
- Zutacore: Zutacore is an emerging immersion cooling provider for AI and HPC data centers, competing for the same next-generation compute thermal envelope as Maxwell Labs. While both pursue chip-level cooling density beyond what air or basic liquid can deliver, Zutacore relies on dielectric fluids rather than photonic cooling.
- Advanced Cooling Technologies: Advanced Cooling Technologies (ACT) designs and manufactures specialized thermal management solutions including heat pipes, cold plates, and two-phase cooling for defense, aerospace, and high-performance computing — overlapping Maxwell Labs' defense/aerospace and HPC target segments. ACT is a more direct competitor in mission-critical thermal management than conventional data center cooling vendors.
Broad incumbents
- Vertiv: Vertiv is a large, publicly traded data center infrastructure provider offering a broad portfolio of thermal management, power, and IT management solutions including liquid cooling. It competes with Maxwell Labs across all data center cooling touchpoints but as a broad incumbent rather than a specialized chip-cooling player, and does not currently offer a photonic solution.
- Rittal: Rittal (part of the Friedhelm Loh Group) is a large established provider of data center infrastructure including cooling solutions, IT racks, and power distribution. It competes broadly with Maxwell Labs in data center cooling but as a broad incumbent portfolio player rather than a specialist in chip-level photonic cooling.
- Boyd Corporation: Boyd Corporation is a large thermal management solutions provider serving data centers, EV battery, aerospace, and industrial markets with cold plates, heat exchangers, and integrated cooling systems. It competes broadly with Maxwell Labs across multiple target verticals (defense, AI infrastructure, power electronics) but relies on conventional thermal management architectures rather than photonic cooling.
Emerging players
- LightPath Technologies: LightPath Technologies manufactures optical components, lenses, and photonic assemblies used in industrial, defense, and commercial applications. While it does not directly compete in chip cooling, its optical/photonic component capabilities overlap with the waveguide, photonic interconnect, and laser subsystems Maxwell Labs needs to manufacture at scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Maxwell Labs social profiles
Digital presenceMaxwell Labs financial estimates
Financial estimateRevenue estimate
Valuation estimate
Maxwell Labs leadership team
Management profileNumber of profiles
Profiles10 records
Maxwell Labs funding detail
Funding detailFunding overview
Funding rounds9 records
Investors6 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Maxwell Labs M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Maxwell Labs
What does Maxwell Labs do?
Maxwell Labs develops and sells a Photonic Cooling Platform that uses laser-driven anti-Stokes fluorescence to extract heat directly from semiconductor chips and convert it into light, delivering over 1,000 W/mm² of cooling power density. The integrated five-component system includes a high-power pump laser, fiber optic cables, photonic interconnects, the Photonic Cold Plate, and a laser power converter that recovers approximately 85% of the extracted heat as usable electricity. The platform is sold through a three-phase Early Access Program targeting data centers, AI accelerator manufacturers, defense integrators, and HPC operators.
Is Maxwell Labs a public or private company?
Maxwell Labs is a private company. It is classified as venture growth investor backed and is currently operating.
When was Maxwell Labs founded?
Maxwell Labs was founded in 2021. It employs 11 to 50 people.
Where is Maxwell Labs based?
Maxwell Labs is headquartered in Saint Paul, United States, in the North America region.
How does Maxwell Labs make money?
Three revenue lines are on record. Photonic Cooling System Sales are the primary driver. The others are early Access Program Licensing and technology Partnership & Integration.
Who are Maxwell Labs's main competitors?
Direct peers on record are CoolIT Systems, Asetek, Iceotope Technologies, Submer, Zutacore and Advanced Cooling Technologies. Broad incumbents are Vertiv, Rittal and Boyd Corporation. LightPath Technologies is listed as an emerging player.
Does Maxwell Labs have an API?
No public API is recorded for Maxwell Labs.
What industry is Maxwell Labs in?
Maxwell Labs's product category is Photonic Thermal Management for Semiconductors. Its primary akta.pro industry code is HDACAOAI, HPC Cooling, Power & Infrastructure (Liquid Cooling, Racks, Power Delivery), with a secondary code of HDAAAAAH, AI Datacenter Power, Cooling & Racks (liquid cooling, power delivery). Its NAICS code is 33341 and its SIC code is 3827.