Julight

Julight masters all of the photonic sensing principles and methods: from time-of-flight to LIDAR, from triangulation to interferometry, including the traditional Doppler configuration and the innovative Self-Mixing Interferometry.

The Self-Mixing Interferometry (SMI) technology has been pioneered by Julight co-founders, and Julight owns the world’s most advanced knowledge and expertise in this field.

In SMI, the traditional concept of laser vibrometry and laser interferometry is revolutionized, in favor of an ultra- simplified optical configuration where the beamsplitter and reference arm of the interferometer are removed, leaving one single measurement path that goes straight from the laser source to the target.

Light back-reflected or back-diffused by the target re-enters into the laser cavity, where interferometric mixing occurs, and the laser simultaneously operates as light source and ultra-sensitive detector.

The use of semiconductor laser sources with small dimensions ensures high-efficiency and compact size of the measuring head. Julight explores and develops ultra-miniaturized sensors with SMI and other technologies, for consumer electronics and biomedical applications.

The exploitation of the smart SMI configuration in conjunction with the traditional principles of laser Doppler vibrometry allows the development of high-performance sensors, with improved versatility and reduced manufacturing cost.