Transformation of a three-tone phase modulated CW laser field into sequence of short pulses

Abstract

This paper presents generation of Fourier-limited pulses from a periodically phase-modulated CW laser field by phase manipulation of its spectral components. Phase modulation in the form of modulus function of sine (MFS) is considered. It allows to produce pedestal-free pulses with controllable repetition rate and duty cycle. Sidelobes of these pulses can be excluded by choosing a proper modulation index. The proposed method allows to produce pulses with 50\% duty ratio. It is shown that three-tone modulation of phase allows to simulate MFS phase modulation.

arXiv comment8 pages, 10 figures