Figure 1
From: Optically-active metastable defects in volumetric nanoplasmonic composites
Optically active laser light and temperature-dependent on/off-switching of metastable defects in glass-metal-rare earth ion and glass-metal nanocomposites. (a) PL-active defect state after cooling the materials in darkness. (b) PL-inactive defect state after cooling the materials under laser light illumination. The curves indicate energy states for MGR1/MG1 defects vs configurational coordinate q: black curve - optically active ground state; red curve optically active excited state; green curve - metastable state. Processes: 1-cooling down; 2-illumination with laser beam; 3-emission/no emission from defect.
