Conversion efficiency second harmonic generator
US5150446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Sep 16, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical article is disclosed comprised of a support including a portion adjacent one major surface which is transparent to the electromagnetic radiation sought to be propagated, an organic layer unit capable of converting a portion of polarized electromagnetic radiation of a selected wavelength to its second harmonic wavelength, means for optically coupling into said organic layer unit polarized electromagnetic radiation of a selected wavelength in its zero order transverse magnetic mode, and means for receiving from the layer unit a portion of the electromagnetic radiation in the form of a first order transverse magnetic mode. The organic layer unit has a thickness which is at least 70 percent of the wavelength of the zero order transverse magnetic mode and differs by less than 100.ANG. from the thickness required for identical propagation constants of the zero and first order transverse magnetic modes. The organic layer unit is comprised of a Y-type Langmuir-Blodgett assembly of amphiphiles forming a first Langmuir-Blodgett layer unit containing noncentrosymmetric organic molecular dipoles of a first orientation providing a second order polarization susceptibility to the first…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.