Abstract
Harmonically-mode-locked (HML) lasers can generate ultrashort transform-limited optical pulses at high frequencies for use in various applications, such as in high-speed measurements and communication systems.1 However, HML lasers are generally unstable, and it is impossible to control the optical pulse width at a fixed pulse rate. In this paper we report a novel method of amplitude-modulated harmonic mode locking (AM-HML), in which the harmonic signal with its amplitude modulation is used to control the optical pulse width at a fixed pulse rate in an actively HML laser.
© 1995 Optical Society of America
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