by A groundbreaking technique for laser ranging has emerged, harnessing the power of chaos to achieve unprecedented precision. Scientists at the Ecole Polytechnique Fédérale de Lausanne (EPFL) have developed a method that utilizes the unique features of chaotic frequency combs to enable unambiguous and interference-immune massively parallel laser ranging.
Previous modulation instability states, also known as chaotic modulation instability, were considered impractical when compared to coherent-light-state counterparts, such as soliton states. However, the researchers at EPFL have found a way to leverage the random amplitude and phase modulation of chaotic frequency combs to advance laser ranging capabilities.
The technique, based on the principle of random modulation continuous-wave (RMCW), utilizes the inherent random modulation of the chaotic comb lines in optical microresonators. Unlike conventional systems that rely on external modulation, this novel approach supports hundreds of multicolor-independent optical carriers, enabling massively parallel laser ranging and velocimetry.
The commercial implications of this innovation are significant, particularly in the era of unmanned vehicles. RMCW technology offers immunity to mutual interference with other LiDARs and ambient light sources. LiDAR companies are already incorporating this approach into their products due to its advantages in terms of interference immunity.
Anton Lukashchuk, a PhD student at EPFL and the first author of the study, explains that their approach does not require stringent conditions on frequency noise, tuning agility, and linearity of the lasers. It also eliminates the need for waveform initiation routines.
Johann Riemensberger, a co-author of the paper, highlights another remarkable aspect of the technique. In the chaotic modulation instability regime, wideband signal modulation of the comb lines occurs, surpassing the resonance bandwidth and resulting in centimeter-scale range resolution. Chaotic microcombs are power-efficient, thermally stable, simple to operate, and provide a flat-top optical spectrum.
The applications of this breakthrough extend beyond laser ranging. The research paves the way for advancements in optical ranging, spread spectrum communication, optical cryptography, and random number generation. The study not only deepens our understanding of chaotic dynamics in optical systems but also offers practical solutions for high-precision lasers ranging in diverse domains.
The team at EPFL has redefined the possibilities of laser ranging with their innovative approach. By harnessing chaos, they have unlocked the potential for unparalleled precision and opened up new avenues for future research and application development. The implications of this breakthrough are far-reaching, promising significant advancements in various fields reliant on laser ranging capabilities.
*Note:
- Source: Coherent Market Insights, Public sources, Desk research
- We have leveraged AI tools to mine information and compile it
Money Singh is a seasoned content writer with over four years of experience in the market research sector. Her expertise spans various industries, including food and beverages, biotechnology, chemical and materials, defense and aerospace, consumer goods, etc.
