Figure 6: The lasing mode spacing of bio-MOF-1⊃DMASM crystal.

(a–c) Fluorescence microscopic images of bio-MOF-1⊃DMASM crystal with different thickness (L=85, 50 and 30 μm). (d–f) Lasing spectra of bio-MOF-1⊃DMASM single crystal corresponding to those shown in a–c.