is the Bose-Einstein distribution function, where 𝛽 = 1/𝑘 B 𝑇 with 𝑘 B as the Boltzmann constant and 𝑇 as the temperature. For the typical parameters in VSC experiments, 𝜔 0 ≈ 1200 cm -1 and room temperature 1/𝛽 = 𝑘 B 𝑇 ≈ 200 cm -1 , such that 𝛽ℏ𝜔 0 ≫ 1. Finally, 𝒫 k represents the thermal weighting factor for accessing the cavity mode 𝜔 k , with