Figure 1: Cascaded frequency tripler. | Scientific Reports

Figure 1: Cascaded frequency tripler.

From: Full 3D modelling of pulse propagation enables efficient nonlinear frequency conversion with low energy laser pulses in a single-element tripler

Figure 1

(a) The classical configuration, with the SH and fundamental pulses split and recombined in the SFG crystal. SHG, second harmonic (doubling) crystal; DM, dichroic mirror; HWP, half waveplate; SFG, sum frequency generation crystal. (b) The single-element configuration, with all the components sandwiched and placed in a single beam focus. SET, single-element tripler. (c), Schematic of the tripler module with the pulse paths. TWC, temporal walk-off compensation plate; SWC, spatial walk-off compensation plate. Walk-off magnitude and directions shown schematically, arrows indicate the polarization direction of the respective pulses. (d) Cross section of the single-element tripler with the crystals mounted in one-inch metal holder rings.

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