We use a chaotic laser, instead of thermal light, as the light source in temporal ghost imaging. This laser is generated by employing an external optical feedback. The imaging magnification is varied by adjusting the group-delay dispersion parameters of the fibers. The temporal ghost imaging result is the convolution between the transmission function of the object and the temporal correlation functions of the chaotic laser. The simulation experiment, which uses a controllable time switch as the object, shows the effectiveness of our scheme. This scheme could find applications in the time-domain tomography of pulses.
Conventional ghost imaging can only obtain two dimensional image because it only uses spatial correlation
characteristics of light source. We describe a three dimensional arrangement using only a single-pixel detector
based on computational ghost imaging. The three dimensional image of the object can be divided into gray-scale
image and digital elevation model, where the gray-scale image can be obtained relying spatial correlation, and
the digital elevation model can be obtained relying temporal correlation. In the further, this technology maybe
find application in remote sense domain.