| 摘要 |
<p>Halide-containing gallium lanthanum sulphide glasses can transmit far into the infrared region of the electromagnetic radiation spectrum due to their low maximum phonon energy. Moreover, they present better UV and/or visible transmission and more importantly, some also exhibit improved glass thermal stability, when compared to those of respective non-halide containing pure gallium lanthanum sulphide glasses. These glasses are well suited for serving as hosts for active materials in making optical waveguide devices such as waveguide (either fibre or planar) lasers, optical amplifiers and superfluorescent sources. In particular, when doped with rare-earth ion such as Pr?3+ or Dy3+¿, they form the core of a waveguide as an efficient optical amplifier operating in the second telecommunication window at a wavelength around 1.3 νm.</p> |
