(Nanowerk News) Dielectric optical microresonators confine and concentrate light in a tiny circular path due to multiple near total internal reflections at the curved dielectric-air interface, where ...

Colloidal quantum-dots (CQDs) have emerged as promising gain media for lasers, offering low lasing thresholds, compatibility with low-cost solution-based synthesis and processing methods, and tunable ...

Applications such as telecommunications and optical computing could benefit from a quantum dot laser with a lasing threshold of 500 nW. A quantum dot (QD) microcavity laser with a sub-microwatt lasing ...

Over the past decade, the idea of photonic computing - where electrons are replaced with light in microelectronic circuits - has emerged as a future technology. This promises low-cost, ...

US researchers have developed a Raman laser with an ultralow threshold that could lead to compact sources for difficult-to-access wavelengths and non-linear optical studies. The laser, based on a ...

A schematic of the upconverting nanoparticle (UCNP) coating on top of Ag nanopillar arrays. (Image: P. James Schuck) Miniaturized lasers are increasingly important for generating coherent beams of ...

In a recent Nature study, scientists have demonstrated an electrically driven perovskite laser using a dual-cavity design, addressing a challenge that has persisted in the field for over a decade.

Room-temperature nanolasers are crucial for advancing optical communication and photonic quantum technologies due to their capability to generate coherent light at a subwavelength scale. However, ...

Researchers have developed a new type of low-energy, nanoscale laser that shines in all directions. The key to its omnidirectional light emission is the introduction of something that is usually ...