Mode-locked laser stabilizing method and apparatus

Details Mode-locked laser stabilizing method and apparatus Mode-locked laser stabilizing method and apparatus

1996-01-16

1997-07-08

Hellner, Mark

Optical: systems and elements

Optical amplifier

Mode locked

359 18, 349200, H01S 300, H01S 3098

Patent

active

056467745

ABSTRACT:
This invention is an improvement of a mode-locked laser stabilizing method and apparatus used with a mode-locked laser apparatus which comprises an optical cavity which consists of an optical modulator which modulates the loss or the phase of light at a fixed frequency, an optical delay line to electrically change the optical path length of the cavity, and an optical amplifier which amplifies a modulated optical pulses. In this method, at least one of the relaxation oscillation frequency components and the harmonic components in the output optical pulses of the mode-locked laser are extracted, and a process of controlling the optical delay line by using the extracted frequency component as an error signal for feedback control and to suppress the error signal below a fixed value.

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