A recent breakthrough in laser technology may revolutionize the way we use lasers in everyday life. Researchers at the University of California, Berkeley have developed a new dual-purpose laser device that is based on colloidal quantum dots. This device can both detect and emit light, making it a powerful tool for a variety of applications. The device is made up of nanosized particles of colloidal quantum dots, which can absorb and emit light from any direction. This means that the device can be used as a detector or an emitter, depending on the application at hand. The device could be used for a variety of purposes, such as imaging, sensing, and communication. The potential applications of this technology are endless, and this is an exciting development for the field of laser technology.

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source: Phys.org