Fiber-optic detector using a mid-infrared diode laser and an acoustooptic modulator
N. V. ZotovaA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgS. A. KarandashevA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgL. A. KulakovaA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgB. A. MatveevA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgB. T. MelekhA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgN. M. Stus’A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg,G. N. TalalakinA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg
ABI
Аннотация
Data are given for an infrared detector based on a semiconductor injection laser, which operates at a wavelength of 3.3 μm and is coupled by a chalcogenide optical fiber to an acoustooptic modulator made from an amorphous Si-Te alloy. The beam modulation coefficient reaches 70% for a pulse duration ≳0.3 μs, making the detector well suited to gas-analysis applications.
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