Photosensitivity of the Er/Yb-Codoped Schott IOG1 Phosphate Glass Using 248 nm, Femtosecond, and Picosecond Laser Radiation

<table>Spectral strength of the PO hole center (HC) located at 540 nm and that of the PO<sub>4</sub> electron center (EC)
located at 242 nm versus energy density, for exposures using 248 nm, 500-femtosecond
laser radiation.</table>

Laser Chemistry

fig4

Figure 4

Figure 4: Photosensitivity of the Er/Yb-Codoped Schott IOG1 Phosphate Glass Using 248 nm, Femtosecond, and Picosecond Laser Radiation 