Details

Autor(en) / Beteiligte

• Yulin Huang
• Jingfu Bao
• Xinyi Li
• Benfeng Zhang
• Gongbin Tang
• Omori, Tatsuya
• Hashimoto, Ken-ya

Titel

Influence of coupling between Rayleigh and SH SAWs on rotated Y-cut LiNbO3 to their electromechanical coupling factor

Ist Teil von

• 2017 IEEE International Ultrasonics Symposium (IUS), 2017, p.1-1

Ort / Verlag

IEEE

Erscheinungsjahr

2017

Quelle

IEEE Xplore

Beschreibungen/Notizen

• Suppression of the SH-SAW response is mandatory to design TC SAW devices on θ degree rotated Y-cut LiNbO 3 . However, it is not easy because K 2 for SH SAW changes rapidly with θ, and its optimal value in terms of the SH-SAW suppression is dependent on electrode and SiO 2 thicknesses. The authors found that the optimal θ always locates close to θ where difference in velocities of two SAWs is minimum. This suggested that their coupling is responsible for variation of their K 2 .