Abstract
A loss-compensated recirculating delayed self-heterodyne interferometer (LC-RDSHI) for laser linewidth measurement is theoretically analyzed. An analytical result for the output spectrum of the LC-RDSHI is obtained. It is found that the spectrum from a LC-RDSHI is equivalent to a spectrum from a conventional delayed self-heterodyne interferometer with equivalent time delay and frequency shift, but modified by a periodical function, which could significantly influence the laser linewidth measurement. The parameters of a LC-RDSHI must be optimized to permit an accurate and direct measurement of laser linewidth from the output spectrum.
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Han, M., Wang, A. Analysis of a loss-compensated recirculating delayed self-heterodyne interferometer for laser linewidth measurement. Appl. Phys. B 81, 53–58 (2005). https://doi.org/10.1007/s00340-005-1871-9
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DOI: https://doi.org/10.1007/s00340-005-1871-9