The Defense Advanced Research Projects Agency (DARPA) published a request for information (RFI) from anyone willing and able to contribute their tech, with a few caveats.
It needs to fit on existing in-flight refueling tankers (the newer KC-46 and Cold War-era KC-135, specifically) and be able to deliver 100k W of power.
This Request for Information (RFI) from the Defense Advanced Research Projects Agency (DARPA), Tactical Technology Office (TTO) seeks technologies and innovative solutions that could be adapted by existing aerial refueling aircraft to expand their role as an Airborne Energy Well capable of transferring power to future Unmanned Aircraft System (UAS) assets via laser energy beaming technologies.
Responses to this RFI will be used to inform and explore future programs that advance the ability of airborne assets to dynamically move energy across a network of aircraft equipped with energy beaming and receiving technologies. This Airborne Energy Well is a potential component of a more expansive energy web of power generation, transfer relays and receiving solutions, enabling the Department of Defense (DoD) to dynamically allocate energy resources to more flexibly deliver military effects.
Intellectual or other privileged or proprietary information contained in responses to this RFI will not be distributed outside of the U.S. Government. In the event that a new DARPA program is developed in response to this RFI and a solicitation is issued, no intellectual or other proprietary information received in response to this RFI will be divulged to agencies outside the U.S. Government.
The full document can be accessed here
Source: DARPA