Figure 1

Transmission spectra of as-deposited Ge16.8Se83.2 film and the film irradiated by a laser with an power density of 0.02, 0.05, 0.1, 0.2, 0.5 and 1 W/cm2, respectively. The inset is the bandgap of the films.

Transmission spectra of as-deposited Ge16.8Se83.2 film and the film irradiated by a laser with an power density of 0.02, 0.05, 0.1, 0.2, 0.5 and 1 W/cm2, respectively. The inset is the bandgap of the films.