Laser diode array with built-in current and voltage surge protection
US6028878A · kind A · utility
3Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Dec 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02345
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Protection from current and voltage spikes is provided for a laser array by attaching a reverse diode laser array to shared contact pads before the first laser array is bonded to those pads. The arrangement provides for surge protection even during fabrication of the laser package where device failure results from power surges before surge protection circuitry is in place. Surge protection is afforded by having a reverse diode of the reverse diode array electrically in parallel with a corresponding laser diode of the protected array when activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.