Optically pumped room temperature low threshold deep UV lasers grown on native AlN substrates Journal title: Opto-Electronic Advances Authors: Akhil Raj Kumar Kalapala, Dong Liu, Sang June Cho, Jeongpil Park, Deyin Zhao, John D. Albrecht, Baxt... Subject(s): Electrical and Electronic Engineering, Engineering, Nanotechnology, Technology, Remote Sensing, Optics