Abstract
Two series of novel chalcohalide glasses varying on different molar percentages of cations and anions were prepared successfully. We experimentally investigated the physical optics properties of the chalcohalide hybrid glass (Ge-As-S-Se-I) system. The results show that the short-wavelength cut-off edge (λvis), linear refractive index (n0), and zero-dispersion-wavelength (ZDW) regularly decrease with the increase of anionic iodine mole percentage. And the addition of cationic germanium enhances the glass transition temperature (Tg), softening temperature (Tp) and crystallization temperature (Tx). Besides, a mono-index optical fiber was drawn successfully using the high temperature polymer as the protective layer, with a minimum loss of 1.91 dB/m at 2.6 μm. Supercontinuum (SC) covering 1.01 ∼ 8.32 μm was generated by pumping the 10-cm-long fiber at a femtosecond laser of 3.78 μm (∼150 fs, 1 kHz, 20 mW). This novel infrared (IR) glass shows great potential in many applications, such as defense military, spectroscopy, long-distanceremote sensing.
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