PT Journal AU Schell, AW Neumer, T Shi, Q Kaschke, J Fischer, J Wegener, M Benson, O TI Laser-written parabolic micro-antennas for efficient photon collection SO Applied physics letters PY 2014 BP 231117/1 EP 4 VL 105 DI 10.1063/1.4903804 LA english ER