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A nonlinear photonic crystal for blue second harmonic generation
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View: Figures


Image of FIG. 1.
FIG. 1.

Photograph of the resulting 2D domain-grating after poling with 1 ms electrical pulses and chemical etching, revealing a structure with good domain fidelity. Inset: 1D domain structure poled with 6 ms long electrical pulses showing domain merging along the -direction. The scale bar in both images is .

Image of FIG. 2.
FIG. 2.

Graph of the calculated (squares) and measured (circles) external output angle of the SH beam vs the external input angle using a 946 nm Nd:YAG laser as the fundamental source. The values in parentheses are the indices specifying the RLV involved in the phase matching.

Image of FIG. 3.
FIG. 3.

Plot of SHG wavelengths vs their external angle using the CW Ti:sapphire laser.

Image of FIG. 4.
FIG. 4.

Spectra for three simultaneously generated beams for different rotations of the sample [(a)–(d)]. (a) When the angle of incidence of the pump is 0°, the beam is collinear with the pump and the beams are generated symmetric (same wavelength) at angles ±9°. (b)–(d) show how the beams corresponding to and are tuning toward longer and shorter wavelengths, respectively, for increasing values of .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A KTiOPO4 nonlinear photonic crystal for blue second harmonic generation