A theory for a cw synchronously pumped, singly resonant optical parametric oscillator with Gaussian beams is presented. It accounts for most of the spatial and temporal effects of the interacting beams in the nonlinear crystal. The optimum design criteria for the focus tightness of the signal and the pump beams and the length of the crystal are given. We consider various nonlinear crystals with two differently mode-locked Nd:YLF sources used as pumps to generate wavelengths from 1 to 13 μm. Results from numerical simulations indicate that with the proper design of the optical parametric oscillator it is possible to obtain energy conversion efficiencies from the pump to the signal and the idler of ~70% while maintaining signal-pulse durations shorter than the pump-pulse duration.
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Refs. 23–27.
Refs. 28, 29.
Refs. 30–33; a reviewer provided some data.
Refs. 23, 34–36.
Refs. 37–39.
Refs. 32, 35, 40–42; a reviewer provided some data.
Refs. 43–45.
Refs. 35, 46–48; a reviewer provided some data.
Refs. 23, 35, 48.
Except for AgGaSe2, the listed nonlinear coefficients dij are for the second-harmonic generation with the fundamental wave at 1.064 μm. For AgGaSe2, the fundamental is at 10.6 μm.
Kleinman symmetry assumed.
Recent measurements by Eckardt et al.32 found that d24 (KTP) and d15 (KTP) are approximately 3.2 pm/V The values listed for the nonlinear coefficients of KTP are the only other reported values.
For incident pulse of 10-ns duration at 1.064 μm.
AgGaSe2 is not phase matchable at the pump wavelength of 1.053 μm.
Tables (4)
Table 1
Beam-Waist Ratios for Various Critically Phase-Matched Interactionsa
Refs. 23–27.
Refs. 28, 29.
Refs. 30–33; a reviewer provided some data.
Refs. 23, 34–36.
Refs. 37–39.
Refs. 32, 35, 40–42; a reviewer provided some data.
Refs. 43–45.
Refs. 35, 46–48; a reviewer provided some data.
Refs. 23, 35, 48.
Except for AgGaSe2, the listed nonlinear coefficients dij are for the second-harmonic generation with the fundamental wave at 1.064 μm. For AgGaSe2, the fundamental is at 10.6 μm.
Kleinman symmetry assumed.
Recent measurements by Eckardt et al.32 found that d24 (KTP) and d15 (KTP) are approximately 3.2 pm/V The values listed for the nonlinear coefficients of KTP are the only other reported values.
For incident pulse of 10-ns duration at 1.064 μm.
AgGaSe2 is not phase matchable at the pump wavelength of 1.053 μm.