High brightness pulsed VCSEL sources
US8995485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2013 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | May 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A VCSEL device having a mesa for generating laser light includes a centralized thermal containment area and a thermal discharge area surrounding the centralized thermal containment area. The device includes a thermal lensing structure for enhancing or controlling heat flow within the centralized thermal containment area and the thermal discharge area and creating and maintaining an index of refraction between the centralized thermal containment area and the thermal discharge area. The VCSEL device operates as a multimode device when driven at a first current in a continuous wave and the VCSEL device operates as a single mode device when driven at a second current at a pulse rate shorter than an overall thermal time constant of the VCSEL device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.