TY - JOUR T1 - Experimental evaluation of impact ionization coefficients in AlxGa1-xN based avalanche photodiodes A1 - Tut, T A1 - Gokkavas, M. A1 - Butun, B. A1 - Butun, S. A1 - Ulker, E. A1 - Ozbay, E. JA - Applied Physics Letters Y1 - 2006 VL - 89 SP - 183524-1 EP - 3 ER -