Abstract
We report complete spatial shaping (both phase and amplitude) of the second-harmonic beam generated in a nonlinear photonic crystal. Using a collinear second-order process in a nonlinear computer generated hologram imprinted on the crystal, the desired beam is generated on-axis and in the near field. This enables compact and efficient one-dimensional beam shaping in comparison to previously demonstrated off-axis Fourier holograms. We experimentally demonstrate the second-harmonic generation of high-order Hermite-Gauss, top hats and arbitrary skyline-shaped beams. A new design for photonic crystals based on non-linear computer generated holograms enables on-axis one dimensional shaping of the second harmonic beam in the near field. This method enables a compact and efficient manner of second harmonic beam shaping, and is demonstrated here for various beam shapes.
| Original language | English |
|---|---|
| Pages (from-to) | L40-L44 |
| Journal | Laser and Photonics Reviews |
| Volume | 9 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1 Nov 2015 |
Keywords
- Photonic crystals
- Second-harmonic generation. holography
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics