[9p-N401-1~15] CS.9 Code-sharing session of 6.5&7.5

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[9p-N401-13] Polarization direction-dependent 2-photon absorption in the rutile TiO₂ O vacancies

〇Koichi Kato¹, Katsuyuki Fukutani¹ (1.IIS Tokyo Univ.)

Keywords:

TiO2,oxygen vacancy,2 photon excitations

The photon has a polarization direction perpendicular to the light direction. The first photon absorption is found to have a few light direction dependencies. On the second photon absorption stage, however, the conduction wave functions are largely deformed by the occupied O vacancies. The choice of light direction changes the polarization direction, leading to large effects on the transition probability from the O defect level to the conduction bands.