Next, to investigate why polariton condensation does not occur under radiative pumping with PL1 energetically aligned with the polariton ground state, we experimentally examine the emission pathway of PL2, which does not overlap energetically with the lower polariton. For this, we fabricated low quality factor cavities (𝑄𝑄 low ≈ 15) with thin top mirrors and measured their PL energy dispersion as a function of fluence (Figure ). We observe leakage below the lower polariton mode is observed at the energy of PL2. This photoluminescence feature does not follow a parabolic trend within the �𝑘𝑘 ∥ ���⃗ � values assessed, suggesting that this emission is not polaritonic .