Abstract: The temporal spectra of scintillation and angle-of-arrival fluctuations have been studied experimentally for light-waves traveling in turbulence of different inner scales. Because of the complexity and uncontrollability of the real atmosphere, the experiment was performed with an atmospheric turbulence chamber. The scintillation and angle-of-arrival fluctuations of the propagating light-wave were simultaneously measured by a position sensitive detector, and the turbulence inner scale along the optical propagation path was derived through inversion. Experimental results show that the high frequency region of both kinds of temporal spectra obey the same power law, and the absolute value of the power exponent and the turbulence inner scale are in linear relation. With the increase of the inn