Researchers have created a high-power tunable laser on silicon photonics, achieving nearly 2 watts using an LMA amplifier. This advancement could revolutionize integrated photonics, with potential applications in space exploration, reducing satellite costs while enhancing capabilities.
However, this trend toward miniaturization and high-density integration—driven by advancements in integrated photonics—has significantly compromised the ability of these systems to generate high signal power. Traditionally, high-power output has been associated with larger systems, such as fiber and solid-state platforms, whose substantial physical dimensions allow for greater energy storage.
In contrast, micron- to millimeter-scale systems, including those based on integrated photonics, possess far lower optical energy storage capacity than their larger, benchtop counterparts. As a result, their power generation capabilities remain inherently limited.
Need for High-Power Signal Generation in Silicon Photonics
In order to achieve large-scale deployment of highly functional, mass-producible silicon photonics systems and replace bulky benchtop system, it is imperative that silicon photonics-based lasers and amplifiers generate high power signal at a level comparable to benchtop systems.
Recently, researchers in Germany, led by Dr. Neetesh Singh and Prof. Franz Kärtner, have demonstrated a very high-power tunable laser reaching close to 2 Watts of output power, thanks to the recently conceived large-mode-area (LMA) integrated waveguide amplifier on silicon photonics.
The researchers envisage that such a device can have a disruptive impact in the field of photonics, and may allow integrated photonics devices to be implemented at a large scale across various fields.
A potential application could be that, such a high-power tunable laser operating at long wavelength window is deployed in small-scale satellites to sense and map out ( with technologies such as LIDAR), molecules essential for life in outer space; for example, carbon dioxide, water and ammonia. The high-power tunable laser based on LMA silicon photonics will reduce the system size, weight, and cost by several orders of magnitude compared to the conventional fiber or solid state-based systems allowing multiple cost-effective space missions with highly enhanced capabilities not possible before.
Integrated photonics, high-power lasers, tunable lasers, photonics breakthrough, optical communication, semiconductor lasers, photonics milestone, next-gen photonics, high-speed data transmission, laser technology
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