TY - JOUR AU - An, Y AU - Cundiff, Steven C2 - Journal of Applied Physics DA - 2004-01-01 00:01:00 LA - en M1 - 96 PB - Journal of Applied Physics PY - 2004 TI - Effect of ultrathin Cr layers on surface second-harmonic generation from Cr-SiO2-Si(001) structures ER -