Abstract

The radiation of continuous mode-locked lasers in the time domain is a sequence of short light pulses. The radiation spectrum of such lasers is a set of equidistant modes. This property is given by the condition of existence of the mode locking regime. It has been found experimentally that Δν (distance between the neighboring modes) is the same in all parts of the spectrum with an accuracy not worse than 10−16 [1]. Recently a separate direction on the applications of broadened by use of optical fiber discrete femtosecond laser radiation spectrum was formed in high-precision spectroscopy. This effect is especially important considering frequency synthesis processes and absolute frequency measurements in all wavelength ranges [1-4]. Special interest in tapered fibers is due to the high transformation effectiveness along with relatively low laser power required for spectral broadening and general experimental simplicity [5].

© 2002 Optical Society of America

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References

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