Fig. 1. (a) Scanned aperture holographic video architecture. (b) Holographic video monitors under construction at Brigham Young University.

Fig. 2. (a) Bulk wave modulator. A slow sheer wave is emitted from the piezoelectric transducer, which interacts with the input light, deflecting it to Θ. (b) Leaky-mode modulator. Light is coupled into a waveguide, and a SAW is input via a transducer. This interaction deflects the light out of the waveguide at Θ. (c) Output from a leaky-mode device. Light at the left is scattered out of the device from guided modes to form M-lines. The brightest of these lines corresponds to the mode occupied by the input light. To the right is the leaky-mode output light. This light is used to form holographic images. (Scatter was accentuated in this device to make the M-lines more prominent).

Fig. 3. (a) Semi-automatic characterization apparatus. For each step of the power meter the RF input frequency is swept and the resulting graph formed by this data is referred to in this paper as a “data map”. (b) Example of a data map. Note that the data map shows the optical output power of the guided-wave device as a function of both RF drive frequency and output angle. The x axis projection gives the frequency response and the y axis projection gives the angular output.

Fig. 4. (a) Frequency response for a guided-wave device with a shallow waveguide, (b) frequency response for a guided-wave device with a deep waveguide, and (c) frequency and angular response of a guided-wave device optimized for the frequency control of color.

Fig. 5. (a) Data map showing both nonlinear and linear outputs. (b) An image showing the composite output of a nonlinear transition as the RF input is swept from low frequency to high frequency in 6 MHz steps [an example of this type of transition is shown in the right part of (a)]. If the transition were linear, these spots would be separated uniformly. However, this transition is nonlinear, so we see a variation in deflection angle at high frequencies even though the frequency step is constant. (c) A data map showing output with both low and high slopes. Note that the both outputs cover a similar range of angles, but in the case of the high slope output this range is controlled by a much smaller RF bandwidth. One can chose the high or low slope transition, as desired, by modifying the launch conditions (input angle) of the illumination light at the input.