We report on an internally -switched self-optical parametric oscillator (SOPO) based on a monolithic two-dimensional (2D) periodically poled (Nd:MgO:PPLN) integrating three device functionalities of a laser gain medium, an electro-optic Bragg -switch, and an optical parametric gain medium (OPGM). The quasi-phase-matching conditions required by the Bragg -switch and OPGM are both satisfied in the 2D nonlinear photonic crystal (NPC) structure formed in the Nd:MgO:PPLN. A 1525 nm signal with a pulse energy of ( peak power) was obtained from the SOPO at 8.5 W diode pump power. An off-angle signal at 1612 nm, amplified by a unique gain-enhancement effect in this 2D NPC, was also observed. Tuning of the SOPO in the eye-safe region was demonstrated.
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