We report phase-modulation mode-locking of a continuous-wave (cw) singlyresonant
optical parametric oscillator (OPO) in the near- and mid-infrared based on
MgO-doped periodically poled LiNbO3 (MgO:PPLN) and pumped by an Yb-fiber laser at
1064 nm. By investigating the spectral output and pulse formation characteristics of the
OPO, we observe a clear transition from an unstable spectrum in cw operation to a
stable and smooth profile under phase modulation, confirming mode-locked operation.
Pulse generation and spectral characteristics under different operating conditions are
studied, including the effects of the location of the intracavity phase modulator and the
number of oscillating modes on mode-locked output pulse duration.
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder. If you wish to make any use of the work not provided for in the law, please contact: email@example.com