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Fig. 1 | PhotoniX

Fig. 1

From: 350-2500 nm supercontinuum white laser enabled by synergic high-harmonic generation and self-phase modulation

Fig. 1

Principle for supercontinuum white laser generation within CPPLN nonlinear crystal via HHG and SPM effects. a Simultaneous broadband 2nd-10th HHG via cascaded 2nd-NL QPM up-conversion upon a mid-IR pump femtosecond laser in CPPLN. b Ultrabroadband 2nd-10th HHG supercontinuum white laser upon a high-peak-power mid-IR pump femtosecond laser via synergic action of HHG and SPM effects. c Schematic diagram of the structural geometry of the designed CPPLN crystal for HHG. d Microscopic image of the etched sample surface of a typical 1D CPPLN structure. e-f Enlarged views of two small segments from the left-hand and right-hand portions of the CPPLN sample. g Calculated distributions of Fourier coefficient as a function of the RLVs for the designed CPPLN sample. h The broadband QPM process of SHG, THG, and HHG

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