The high-power fiber laser schemes based on phase modulation of random signals suffer from the interference of the self-pulse effect. We propose a spectral broadening scheme based on a single stage high-order phase modulation and flexible driving signals design. A P-tuned sequence with a bandwidth of 1.25 GHz is used as the driving signal of the phase modulator, and the optical bandwidth of the seed source can be broadened to 40 GHz after the modulation, while optimizing the shape of the spectrum. It is verified by experiments that the self-pulse effect is well suppressed under our scheme. Based on a master oscillator power amplifier fiber laser system, the output power under the same bandwidth is increased by 70% compared to using white noises as a driving signal. In addition, we analyze the influence of the signal randomness on the timing of the self-pulse effect, which is beneficial to design driving signals.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.