## Inside the Texas Petawatt: Firing a Laser More Powerful Than the US Grid
Two floors beneath the University of Texas at Austin campus, behind heavy double doors, sits one of the most powerful lasers in the United States. The Texas Petawatt (TPW) laser, now closed due to funding cuts, was a government-funded research center where scientists could apply for time on specialized equipment. As the lead laser scientist from 2020 to 2024, I operated a system that, for a fleeting instant, could generate more power than the entire US electrical grid.

The process is a feat of precision engineering. The laser takes a tiny pulse of light, first stretching it out to prevent it from destroying its own optics. It is then amplified to an extreme degree before being compressed back down to an ultra-short duration. This creates an unimaginably intense concentration of energy, allowing researchers to study matter under conditions found nowhere else on Earth—simulating the interiors of stars or the physics of nuclear fusion.

The TPW was a key node in LaserNetUS, a Department of Energy network of high-power laser labs designed to maintain US scientific competitiveness. Its closure highlights the fragile funding landscape for foundational, big-science research infrastructure. The loss of such a facility removes a critical tool for advancing high-energy-density physics, plasma science, and potentially transformative energy research, raising questions about the nation's long-term strategic capacity in these fields.
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- **Source**: Ars Technica
- **Sector**: The Lab
- **Tags**: laser, high-energy physics, research funding, Department of Energy, LaserNetUS
- **Credibility**: unverified
- **Published**: 2026-04-19 12:52:29
- **ID**: 71187
- **URL**: https://whisperx.ai/en/intel/71187