Quintessent raises $40M Series A to scale optical interconnect production
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Optical interconnect startup Quintessent Inc. announced a $40 million Series A funding round led by Cycle Capital. The round included Goldman Sachs, Susquehanna International Group, and Osage University Partners. The investment follows an $11.4 million seed round in 2024 and will fund production of its comb laser hardware.
Key Facts
- Quintessent Inc. raised $40 million in a Series A round led by Cycle Capital.
- Goldman Sachs, Susquehanna International Group, and Osage University Partners joined the round.
- The company previously raised an $11.4 million seed round in 2024.
- Quintessent's comb laser uses quantum dots made of gallium arsenide and generates light beams with eight different wavelengths.
- The technology uses 40% less power than rival products and operates more reliably at high ambient temperatures.
Funding Round
Quintessent Inc. announced a $40 million Series A funding round led by Cycle Capital. Goldman Sachs, Susquehanna International Group, and Osage University Partners participated in the round. The investment follows an $11.4 million seed round completed in 2024. The new capital will be used to gear up production of the company's optical interconnect hardware.
Comb Laser Technology
Quintessent's comb laser generates light using quantum dots made of gallium arsenide, a material in which electrons move several times faster than in silicon. The device produces light beams with eight different wavelengths, enabling higher throughput over fiber-optic links. The technology can be extended to support higher wavelength counts and more parts of the spectrum. Compared to rival products, the comb laser requires fewer supporting components, uses 40% less power, and operates more reliably at high ambient temperatures.
Company Transition
Co-founder and CEO Alan Liu stated that Quintessent is transitioning from technology development to a product-focused company. Liu said the company has focused on building technologies to make optical connectivity simpler to deploy and scale.
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Quintessent raises $40M Series A to scale optical interconnect production
