End-Fire Injection (IMAGE) Optica Caption A new end-fire injection technique uses a waveguide (W) that is directly connected to the edge of the microdisk. A phenomenon known as laser time-reversal creates a laser that absorbs light rather than emits it, allowing the light to efficiently enter the microdisk, which use the whispering-gallery optical effect to confine and enhance light that enters the disk Credit Qinghai Song, Harbin Institute of Technology in China Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.