Wave generation by wave propagation phase-shift compensation in an non-linear optical medium
US7426075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2006 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Nov 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3548
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a nonlinear optical medium such as the gallium arsenide, two collinear incident monochromatic waves are injected to generate a monochromatic wave. The medium induces between the three waves a propagation phase-shift that has a value π if the three waves travel a coherence length in the medium and that is compensated at the value 0 modulo 2π each time that the three waves have travelled a periodic distance in the medium. In order to significantly increase the conversion efficiency, the periodic distance between two successive bounces of total internal reflection of the waves in zig-zag is strictly less than the coherence length. The high conversion efficiency on a very short material length leads to product high-power coherent optical sources particularly with wavelengths of approximately 10 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.