Abstract
We have proposed a highly accurate frequency-measurement system that uses 1.5-µm-wavelength semiconductor lasers, which are important for spectroscopy and optical-communication systems, and we have carried out some preliminary experiments.1,2 We present here a frequency link for making highly accurate second a 17 frequency standards at 1.5 µm, which is a basic part of the frequency-measurement system.
© 1993 Optical Society of America
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