Quintessent
Quintessent, a UC Santa Barbara spin-out, develops optical interconnect products, including a single-chip quantum dot DWDM comb laser built on GaAs and integrated with silicon photonics. It targets AI datacenter operators and large-scale computing customers and sells optical connectivity components. In August 2026 it raised a $40M Series A led by Cycle Capital, with Ciena, Goldman Sachs XIG-Industry Ventures and others participating, and began customer sampling of its first product. It had earlier raised a seed round of about $11.5–12M in 2023–2024.
Funding
Every round, secondary, debt facility or acquisition involving Quintessent that AI Lounge tracks, newest first. Latest: Series A on Aug 24, 2026.
Timeline · 2
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