Wired covers our work on charging smartphones using lasers.     https://www.wired.com/story/wireless-charging-with-lasers/

Although mobile devices such as tablets and smartphones let us communicate, work and access information wirelessly, their batteries must still be charged by plugging them in to an outlet. But we have for the first time developed a method to safely charge a smartphone wirelessly using a laser. http://laserpower.cs.washington.edu/