G. Ronald Hadley

In Memoriam: G. Ronald Hadley

January 09, 2018

G. Ronald "Ron" Hadley, OSA Fellow and Emeritus member, passed away on 9 January 2018 at the age of 71. Ron was recognized with OSA Fellow status in 2000 for his significant contributions to numerical modeling of passive and active photonics structures, including edge emitting and vertical cavity semiconductor lasers. 
Hadley attended Wichita State University for his undergraduate studies and received his PhD in Physics from Iowa State University in Ames, IA in 1972. He joined the technical staff at Sandia National Laboratories when he graduated and worked at the Lab for 36 years.  In 1995, he was appointed Distinguished Member of Technical Staff. His research focus developed over his career with emphasis being on electron flow in high-current vacuum diodes (electron beam fusion) 1973-1977; two-Phase flow of water through porous material (nuclear waste disposal)1977-1985; and guided-wave optics and diode lasers,1985-2017.
Hadley was the owner of Rio Grande Photonics, LLC, in Albuquerque, NM, USA, which provided consulting services in the area of numerical simulation of guided wave optics devices and diode lasers. This includes development of numerical algorithms, eigenmode analysis of (bent) waveguides and specialty fibers, beam propagation analysis of structures with complex geometries, frequency domain modeling of reflective structures (both 2D and 3D), modeling of active devices, including VCSELs and edge-emitting diode lasers, and time-dependent modeling of micro-cavity lasers and fiber amplifiers.
Hadley was an Emeritus member of The Optical Society and a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE).  During his career, he published extensively with over 4,000 citations, conference proceedings, and articles. Hadley was a dedicated husband, father, grandad, and great-grandad. He is survived by his wife of 50 years, Donna, and his three daughters and their families.

Ron Hadley will be dearly missed by his family and colleagues. OSA and the scientific community mourns the loss of Ron Hadley.