Simple technique for improving the resolution of the delayed self-heterodyne method
Optics Letters, Vol. 15, Issue 11, pp. 640-642 (1990)
http://dx.doi.org/10.1364/OL.15.000640
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Abstract
A new technique is proposed and demonstrated for improving the resolution of the delayed self-heterodyne method for laser spectral linewidth measurement. The delay time between two laser beams is increased by the use of multipass transmission in an optical fiber ring interferometer containing a frequency shifter. This technique does not require a longer fiber or complicated curve fitting of the observed spectra.
© 1990 Optical Society of America
Citation
Hidemi Tsuchida, "Simple technique for improving the resolution of the delayed self-heterodyne method," Opt. Lett. 15, 640-642 (1990)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-15-11-640
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