electrochemical etching

Porous GaP multilayers formed by electrochemical etching
R. W. Tjerkstra, G. J. Rivas, D. Vanmaekelbergh, and J. J. Kelly
Electrochem. Solid-State Lett. 5, G32-35 (2002)

Tunable photonic strength in porous GaP
G. J. Rivas, A. Lagendijk, R. W. Tjerkstra, D. Vanmaekelbergh, and J. J. Kelly
Appl. Phys. Lett. 80, 4498-4500 (2002)