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Simplified ultrafast pulse shaper for tailored polarization states using a birefringent prism
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Polarization shaper based on a birefringent prism that disperses incident and polarizations by different angles, allowing the polarizations to be shaped by independent sections of the SLM. (b) Definitions of refraction angles at prism interfaces used to determine dispersions. (c) Definitions of angles used to calculate antireflection coating. For an explanation of the symbols, please refer to the text.

Image of FIG. 2.
FIG. 2.

Approximate bandwidth in nanometers that can be dispersed within the polarization dispersion of a prism at .

Image of FIG. 3.
FIG. 3.

Contour plots of the chromatic dispersion (dark shaded region) and polarization separation (light) attainable in a prism at , varying the prism apex angle and the angle of the OA to the prism bisector . The contours are shown for every 10° in . The design point and is shown by the dotted line.

Image of FIG. 4.
FIG. 4.

Refraction angle for a 100 nm bandwidth beam incident on a prism cut at and .

Image of FIG. 5.
FIG. 5.

Intensity reflection coefficients for (solid) and (dashed) polarizations, shown for a range of input wavelengths (black, lower axis) and incidence angles (gray, upper axis) for a design thickness of .

Image of FIG. 6.
FIG. 6.

Design of SLAR coating for 76° incidence into . The coating refractive index determines the optimal thickness (gray, right axes) that maximizes the total power throughput (black, left). The index of refraction for used in the experiment is shown by the dotted line.

Image of FIG. 7.
FIG. 7.

(a) Optical frequency calibration showing the - and -polarized components dispersed onto distinct regions on the SLM together with third-order polynomial fits. The transmitted spectrum is shown at the left. (b) Normalized phase shift for each polarization, and fit to a sixth-order polynomial.

Image of FIG. 8.
FIG. 8.

The residual phase measured on (a) - and (b) -polarized components is inverted and applied to obtain near-transform limited compressed pulses [(c) and (d)]. Each “phantom” trace shows measured (left half-plane) and reconstructed (right) FROG trace, the reconstructed spectrum (black) and spectral phase (red) on the frequency axis, and the reconstructed pulse on the time axis.

Image of FIG. 9.
FIG. 9.

Polarization state measurement. (a) - and (b) -polarization FROG reconstruction. (c) and (d) −45° projection fitted FROG traces. (e) and (f) show the target and retrieved polarization state, respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Simplified ultrafast pulse shaper for tailored polarization states using a birefringent prism