EPFL researchers developed a chip-scale ultrafast laser matching the performance of large tabletop femtosecond lasers after roughly 20 years of effort. Femtosecond pulses lasting quadrillionths of a second enable precise material processing and scientific measurements.
Conventional femtosecond systems occupy entire laboratory tables with complex optics and cooling infrastructure. Integrating equivalent capability onto a semiconductor chip opens portable applications in manufacturing, medicine, and communications.
The Swiss research team overcame engineering barriers related to power density, heat dissipation, and pulse stability at microscale dimensions. Chip lasers could deploy in field instruments previously limited by bulk equipment size.
Ultrafast laser miniaturization parallels broader trends in photonic integration for computing and sensing. Commercialization timelines will depend on further validation across operating environments beyond controlled laboratory conditions.
Created by Ayen Stabel.
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Sources:
https://www.sciencedaily.com/news/