Fluorogallate glass is a favorable kind of material for optical fiber lasers with transmitting infrared light at longer wavelength and lower phonon energy.

含镓氟化物玻璃具有较其它氟化物玻璃更宽的红外透过范围和更低的声子能量，显示出其是一种优质的激光基质材料。

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Passive applications of chalcogenide glass fibers in the infrared are described specifically for optical sensing of chemical species.

并具体阐述了硫系玻璃光纤在红外波段的被动化学传感应用。

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The only instruments capable of measuring such vibrations, though, were spectroscopes--meter-long glass-and-metal optical devices that used infrared light.

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The only instruments capable of measuring such vibrations, though, were spectroscopes--4-foot-long glass-and-metal optical devices that used infrared light.

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