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. Author manuscript; available in PMC: 2019 May 24.
Published in final edited form as: Rev Sci Instrum. 2016 Dec;87(12):124702. doi: 10.1063/1.4969059

FIG. 7.

FIG. 7.

Modulation input transfer function (color online). The solid blue line indicates the unloaded frequency response, with the phase plotted in the lower panel. The dash-dotted orange trace shows the response with a 700 nF piezoelectric actuator (Thorlabs PN AE0505D08F). Several mechanical resonances above ≈ 50 kHz are clearly visible. The dashed green trace shows the response under a 1 μF capacitive load. Loaded response bandwidth is ≈ 100 kHz, and the unloaded gain is flat within 0.1 dB out to 1 MHz where the phase is −20°.