Figure 2. (IMAGE)

The University of Osaka

Figure 2.

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.

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Osaka University

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