InPHRED
Unlocking the Next Era of Optoelectronics

The promise of optoelectronics has always been bright. For decades, the field has promised smarter imaging, faster data transfer, and health monitoring tools that could change lives.

Yet in practice, many of those promises stalled: Smartphones still struggle with under-screen facial recognition and autofocus on invasive continuous glucose monitors remain buggy and inaccurate prototypes; and traditional copper interconnects are struggling to meet exponentially increasing energy demands from the AI revolution, with data center fires and performance shortfalls becoming regular risks.

For Jacob Tarn, Ph.D., CEO of InPHRED, this slowdown has been long coming—current optoelectronics are already at the limits of conventional semiconductor materials. With nearly forty years in the compound semiconductor industry, he had seen the potential of indium phosphide and gallium nitride technology, but also their shortcomings. The devices built on these material platforms could only stretch so far.

That moment of recognition set InPHRED on its current path. “When I first engaged with Professor Han at Yale University on InPHRED’s nanoporous technology, I knew immediately that we had found a breakthrough that could take us beyond what conventional semiconductors had been able to achieve,” he says.

InPHRED was founded on the belief that the right material innovation could unlock stalled applications across industries. By engineering nanoporous structures into semiconductors, InPHRED has managed to bend the rules of how light can be emitted and controlled. So far InPHRED has developed two families of flagship products—shortwave infrared (SWIR) vertical-cavity surface-emitting lasers (VCSELs) and resonant cavity LEDs (RC-LEDs)—but the company’s broader nanotechnology platform can transform the next generation of optoelectronics solutions.

Rethinking Old Limits

To understand the significance of InPHRED’s work, it helps to look back at what came before.

Indium phosphide has been a workhorse in high-tech industries for more than thirty years. Its edge-emitting lasers powered telecom infrastructure and other demanding applications, but the nature of edge-emitting geometry meant that devices were expensive and complicated to manufacture, and difficult to scale. In contrast, vertical cavity surface-emitting lasers (VCSELs) have better yield, better optical properties, and can be much more manufacturable at scale. The key ingredient for VCSELs is a highly reflective mirror. For thirty years, the semiconductor industry hoped that it would be possible to build a surface-emitting indium phosphide laser—as had been achieved in gallium arsenide, a different material system. Gallium arsenide VCSELs are currently ubiquitous in consumer electronics products, but fundamental material limitations of the periodic table meant that there are no good mirrors for the indium phosphide system.

InPHRED’s nanoporous semiconductor process broke that deadlock. By porosifying a formerly solid material—filling it with pores, like a sponge, but at the nanoscale—the company unlocked the ability to precisely tune and control how light travels through the material. InPHRED had unlocked high reflectivity mirrors for indium phosphide. The company now manufactures indium phosphide-based VCSELs that emit from 1.3—2.3 microns using wafer-level processing, enabling higher volumes, lower costs, and superior performance previously thought to be impossible.

At the same time, InPHRED’s team applied nanoporous engineering to gallium nitride. Gallium nitride has long been the world’s most widely used compound semiconductor, known for lighting and power electronics. However, traditional gallium nitride LEDs scatter light in diffuse patterns, making them unsuited for applications that demand precision. At the other end of the spectrum, lasers offer coherence and focus but come with high costs. By placing a traditional LED within a resonant cavity—enabled by tunable mirrors—InPHRED creates an RC-LED which delivers sharper emission than a standard LED while retaining commodity advantages like low cost and low power consumption.

Devices in the Real World

The practical impact of those breakthroughs is already visible. For smartphones, InPHRED’s SWIR VCSELs are enabling more secure under-display facial recognition. Existing solutions struggled with accuracy, leaving them vulnerable to spoofing, but by operating in the shortwave infrared (SWIR) spectrum (versus the near-infrared spectrum they use today), InPHRED’s devices deliver higher precision and better eye safety, all while fitting within the design demands of consumer electronics. Eye safety is a much more pressing concern in LiDAR for mixed- and virtual-reality products, autonomous driving, warehouse and industrial automation. A unique property of the SWIR spectrum is that its longer wavelengths are heavily absorbed by the cornea and other anterior parts of the eye and do not reach the retina: this means that a SWIR laser can be operated at 10x higher power, or stronger signal, than a visible or near-infrared laser. This is a critical advantage for autonomous and assisted driving systems, which require shining high power coherent light around the environment in order to detect and identify objects hundreds of meters away.

InPHRED’s technology is also transforming healthcare. For decades, researchers have chased the dream of noninvasive glucose monitoring. The science of how to interpret optical signals has been well studied, but the devices never had the precision to make it viable. InPHRED’s optoelectronic advances finally clear that hurdle, making continuous, needle-free wearable monitors a possibility. For people living with diabetes, this is a quality-of-life revolution.

There are infrastructure-scale implications as well. As AI drives demand for ever-larger data centers, energy consumption has become one of the sector’s thorniest problems. The current copper electrical interconnects overheat easily at today’s data center scale and density— and will be thoroughly overburdened by the next generation of computing demands. By using optical interconnects made from SWIR VCSELs and RC-LEDs, data centers can transfer information faster while consuming far less power. For cloud providers, the business case is clear. For society at large, the environmental benefits are even more compelling.

Building toward What’s Next

The company is not standing still. Its pipeline includes visible light RC-LEDs in blue and green wavelengths, designed for integration into consumer health wearables. Smartwatches with advanced sensing capabilities are expected to benefit as early as 2026. The same timeline applies to infrared RC-LEDs, which are being prepared for commercialization in both digital health and sensing applications.

Rebecca Levonian, Ph.D., InPHRED’s CSO, places the company’s approach in context. “If you think of light emission as a spectrum, standard LEDs are at one end, diffuse and commodity-driven, while lasers sit at the other, coherent and premium. RC-LEDs sit in between, offering a unique balance of performance and affordability. As a technology solution provider, InPHRED is positioned to serve premium and commodity markets.”

An Industry Takes Notice

When InPHRED first announced its nanoporous technology breakthroughs, the reaction across the industry was immediate. Potential partners and customers expressed surprise that such solutions were already possible, and more importantly, that they could be commercialized. Since then, the company has been fielding interest from major players across consumer electronics, automotive, healthcare, and cloud infrastructure.

That response has translated into real partnerships. InPHRED is now working alongside tier-one smartphone makers, automotive suppliers, wearable device manufacturers, and data center operators. For a young company, this level of engagement reflects both the strength of its technology and the urgency of the markets it serves.

Much of InPHRED’s momentum comes down to leadership. Tarn’s technical depth and decades of industry experience give the company credibility, while Levonian’s strategic acumen ensures its research translates into market-ready products. Their combined efforts have fostered a culture that balances scientific rigor with practical execution.

As a startup spun out of Yale University, the company actively builds bridges between breakthrough science and commercial adoption. This openness accelerates progress while ensuring that its devices land where they can make the most difference.

Charting the Future

InPHRED aims to continue leading the charge in bringing about tomorrow’s solutions. Each new device type, whether VCSEL, RC-LED, or yet-to-be-announced nanoporous innovation extends the possibilities of optoelectronics. The company’s leadership believes we are only at the start of what nanoporous semiconductors can enable.

Already, their work is reframing expectations in fields as diverse as consumer electronics, healthcare, transportation, and cloud computing. For an industry that had grown used to incremental gains, InPHRED is showing what happens when the underlying science takes a leap.

“It’s funny—we have heard our customers and partners express surprise,” Tarn says, “both discovering that these new solutions ‘suddenly’ exist, but also that they’re being pioneered by [a tiny startup]… I guess InPHRED is proving that even in a field crowded with global giants, a company built on clear vision and material innovation can chart the future.”