Figure 3: Transverse tracking signals.
From: Polarization-dependent optomechanics mediated by chiral microresonators
(a) Transverse tracking signals for a chiral particle trapped with σ− (blue) and σ+ (red) light. Rotations show up as an oscillation on top of the thermal fluctuations. (b) Histograms of the transverse position tracking. Rotations broaden the position histogram (red) deviating from the typical Gaussian profile due to thermal fluctuations (blue). (c) ACFs of particle transverse position fluctuations under σ− (blue) and σ+ (red) polarizations. When the particle is not rotating (blue) a typical exponential decay is fitted to obtain the optical force constants in the OT. However, when the particle is rotating (red) signals are fitted by a superposition of an exponential, yielding the trap force constants, and an oscillation, yielding the rotation frequency (equation 3).
