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We demonstrate an efficiency-enhanced picosecond(ps) mid-infrared radiation via optical parametric downconversion. Based on a ceiscaded periodically poled MgO-doped stoichiometric lithium tantalate crystal(MgO:sPPLT), a tandem optical parametric oscillation-optical parametric amplification(OPO-OPA) process is achieved. Compared with a single OPO process, the conversion efficiency obtains an enhancement of 71%.
Based on a ceiscaded periodically poled MgO-doped stoichiometric lithium tantalate crystal (MgO: sPPLT), a tandem optical parametric oscillation-optical parametric amplification (OPO- OPA) process is achieved. Compared with a single OPO process, the conversion efficiency property an enhancement of 71%.