Figure 2. (IMAGE) Osaka University Caption Illustration of the experiment: A blue laser diode (LD), controlled by a waveform generator (WG), is focused in the middle of the shuttle while a red laser spot partially covers its tip. Reflected red light is collected by a photodiode (PD) and the resulting electrical signal is monitored by an oscilloscope (Osc) and the frequency response of the device under study. Cutoff frequency, ~2 kHz. The device is thermalized at 50°C during excitation with the blue laser. We acquired data points manually, and observed no appreciable drift over time, indicating reproducibility over thousands of cycles. Credit Osaka University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.