Driven bright solitons on a mid-infrared laser chip

Driven bright solitons on a mid-infrared laser chip

Despite the continuing progress in integrated optical frequency comb technology1, compact sources of short, bright pulses in the mid-infrared wavelength range from 3 to 12 μm so far remain beyond reach. The state-of-the-art ultrafast pulse emitters in the mid-infrared are complex, bulky and inefficient systems based on the downconversion of near-infrared or visible pulsed laser sources. Here we show a purely DC-driven semiconductor laser chip th…

Bright Solitons Power Mid-Infrared Laser Chip

In the relentless pursuit of advancing integrated photonics, the mid-infrared (mid-IR) spectrum—ranging from 3 to 12 micrometers in wavelength—has remained a particularly challenging frontier. This specifically pertains to compact, efficient, and robust sources capable of producing ultrafast pulses, which are essential for applications spanning molecular spectroscopy, environmental sensing, and nonlinear optics. Conventional approaches rely heav…

The physicists of Harvard John A. Paulson School of Engineering and Applied Sciences (Seas) have created a compact laser that emits extremely bright and short pulses of light in a range of useful but difficult wavelengths, packaging the performance of larger cameras on a single chip. Published in [...]