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Erbium Laser Propagation in Simulated Atmospheres. I. Description of Experimental Apparatus and Preliminary Results

机译:铒激光在模拟大气中的传播。 I.实验装置和初步结果的描述

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Initial results are presented of an experimental study utilizing an absorption cell facility to determine erbium laser propagation characteristics in simulated atmospheres. The facility consists of a 3.3-meter spectrometer coupled to a 20-meter multipass absorption cell. The cell environment can be controlled over a wide range of pressures, temperatures, humidities, and gas concentrations. Absorption measurements were made with path lengths varying from 400 to 1600 meters in a simulated atmosphere consisting of clean dry air. The initial experimentally measured attenuation of 1.54 micron radiation by clean dry air is less than 25% per km. The results include the discovery of a new emission line of the erbium laser at 1.544 microns and the simultaneous emission of lines at 1.544 and 1.536 microns. (Author)

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