Effect of CW laser illumination on Fe-doped β-Ga2O3

Gallium oxide are a potential material for many applications and recent research showed its strong anisotropic properties in THz range. We applied THz-TDS and CW laser to study the excited carrier dynamics in our sample (Ga 2 O 3 , 010, Fe-doped). The results showed different response along two crystal axes. Along the a-axis we observed Drude response and conductivity are increasing with CW laser increasing, as the same as we expected. Our fitting results (by Drude model) of this direction also agreed with our expectation. Along the c-axis we observed non-Drude response and further experiments are needed.