Intense terahertz emission from surface-illuminated GaAs grown on Si(100) and Si(111) substrates - Estacio, Elmer; Takatori, Satoru; Pham, Minh Hong; Cadatal-Raduban, Marilou; Gabayno, Jacque Lynn; Sarukura, Nobuhiko; Misa, John Vincent; Jaculbia, Rafael; Defensor, Michael; Somintac, Armando; Salvador, Arnel (Proceedings of the Samahang Pisika ng Pilipinas, 2009)