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We report a working prototype of absolute distance meter developed for outer-space operation by incorporating a fiber-type modelocked laser. The target distance is measured using a 1 GHz synthetic radio frequency (~0.3 m wavelength) provided by the 20th intermode harmonic of a 50 MHz pulse repetition rate. The measurement repeatability is 7 μm at 1 s averaging with an accuracy of ±20 μm for a 2.5...
Femtosecond pulse lasers offer breakthroughs in precision metrology particularly in the fields of time, distance and spectroscopy. This advance attracts much attention to extend today's space missions by improving the precision of remote sensing and control capabilities. In this presentation, we introduce how femtosecond lasers are being investigated for space explorations in the near future.
Real-time monitoring and control (RMC) of the operational state of a femtosecond laser is essential for its practical uses with reliability. For the purpose, we present a compact all-fiber-based RMC system which automatically performs the task of supervising multiple key pulse parameters at a same time in both the temporal and frequency domain in situ with the femtosecond laser being in operation.
Femtosecond pulse lasers offer breakthroughs in precision metrology particularly in the fields of time, distance and spectroscopy. This advance attracts much attention to extend today's space missions by improving the precision of remote sensing and control capabilities. In this presentation, we introduce how femtosecond lasers are being investigated for space explorations in the near future. Special...
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