Vertical cavity light-producing device with improved power conversion
US6690697B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/36
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vertical cavity light-producing device which, in response to incident external light, produces quasi-laser light with an enlarged spectral linewidth selected to improve power conversion efficiency, including a substrate; a bottom dielectric stack reflective to light over a predetermined range of wavelengths; and an organic active region for producing quasi-laser light. The device also includes a top dielectric stack spaced from the bottom stack reflective to light over a predetermined range of wavelengths; the active region includes one or more periodic gain region(s) and organic spacer layers disposed on either side of the periodic gain region(s) arranged so that the periodic gain region(s) is aligned with the antinodes of the device's standing wave electromagnetic field; and the top or bottom dielectric stack being selected so that it's peak reflectance is less than 99% and the device's spectral linewidth is increased but produces an acceptable level of spontaneous emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.