Figure 9
Image of the experimental apparatus. The mini-shaker drives the system while the laser/photodiode pairs are the sensing mechanism. (a) Side-view of the experimental apparatus (function generator, power amplifier, laser power supply, and USB GPIB box not shown). The red and black wires on the lasers attach to the rods, which act as conduits to bring power to the laser diodes. The red and black wires attached the the photodiodes lead to the GPIB box and ultimately the computer for data collection. (b) Angled view of the apparatus to demonstrate how wires are attached and show a L = 19.75 cm periodic channel attached to the system. The acrylic/channel can be swapped out depending on the geometry of choice.
