The oscillations were also observed under alternative conditions, such as at 17 • C at ∼134.9, and ∼299.5 mW (see Figure ). At lower laser powers, the system remained at stationary state, while with increasing laser powers oscillatory response appeared. Interestingly, we observed increasing frequencies with increasing laser power, with the major oscillating frequency increasing from ∼71 s (0.014 Hz) to ∼166 s (0.006 Hz) while increasing the laser power from ∼134.9 mW to ∼299.5 mW at a base temperature of 17 • C.