TY - GEN
T1 - Experimental investigation of dual wave optimized reflector stacks in solidly mounted resonators
AU - Jose, Sumy
AU - Hueting, Raymond Josephus Engelbart
PY - 2011
Y1 - 2011
N2 - Optimizing the reflector stacks for both longitudinal and shear waves is critical in the design of SMRs for high Quality factor (Q) filters. In this work, we experimentally investigate two design approaches for reflector stack optimization, i.e. the phase error approach and the diffraction grating method (DGM). Various SiO2/W reflector stacks were fabricated and analyzed: one stack using DGM and four others using the phase error approach. The extracted ID Q shows the expected trend except for the quarter-wave like stack. 2D FEM simulations reveal that the quarter-wave stack with an increased top-oxide layer shows improved shear reflection. The DGM stack showed the highest experimental Q of 1700. The results indicate that these approaches are applicable for any reflector stack combination.
AB - Optimizing the reflector stacks for both longitudinal and shear waves is critical in the design of SMRs for high Quality factor (Q) filters. In this work, we experimentally investigate two design approaches for reflector stack optimization, i.e. the phase error approach and the diffraction grating method (DGM). Various SiO2/W reflector stacks were fabricated and analyzed: one stack using DGM and four others using the phase error approach. The extracted ID Q shows the expected trend except for the quarter-wave like stack. 2D FEM simulations reveal that the quarter-wave stack with an increased top-oxide layer shows improved shear reflection. The DGM stack showed the highest experimental Q of 1700. The results indicate that these approaches are applicable for any reflector stack combination.
KW - METIS-297983
KW - IR-88050
U2 - 10.1109/ULTSYM.2011.0304
DO - 10.1109/ULTSYM.2011.0304
M3 - Conference contribution
SN - 1237
SP - -1234
BT - Proceedings IEEE International Ultrasonics Symposium, IUS 2011
PB - IEEE
CY - Los Alamitos, CA, USA
T2 - IEEE International Ultrasonics Symposium, IUS 2011
Y2 - 18 October 2011 through 21 October 2011
ER -