Om Prakash Naraniya

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We present numerical results for optimization of the overall idler conversion efficiency of a nanosecond optical parametric oscillator (OPO), wherein the signal generated in the OPO process is also used as the pump for a difference frequency generation (DFG) process in a quasi-periodic MgO:LiNbO(3) crystal. The phase-matching conditions are considered such(More)
We present numerical results of an efficient scheme for mid-infrared generation using simultaneous quasi-phase matched optical parametric oscillators (OPO) and difference-frequency generation (DFG) processes in a singly resonant cavity with double-pass pump configuration. Considering an appropriately poled grating structure in MgO doped congruent lithium(More)
Pulsed nanosecond optical parametric oscillators, in general, are pumped by a direct laser beam having Gaussian intensity profiles in temporal and spatial domains, which limits the conversion efficiency due to energy consumption during build-up of signal and idler intensities, and back-conversion effects. Efficiency optimization in an OPO involves reducing(More)
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