Laser diode arrays with close beam offsets
US5631918A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention concerns laser diode arrays having an accurately spaced offset in the laser beams emanating from their respective laser stripes, and methods of their manufacture. The first method involves the mounting of at least two laser diodes on a submount such that the axes of the laser stripes between the two respective diodes are accurately spaced. The second method concerns the placement of a position mark on each diode at a accurate distance from the axis of the laser stripe such that the mark is easily detectable from a side view. The two diodes are then mounted with the axes of their laser stripes accurately spaced from the relative positioning of the position marks. The third method concerns the manufacture of laser diodes whose laser stripe axes are accurately spaced from at least one side edge of the diodes. The array of diodes is constructed such that the laser stripe axes are accurately spaced from each other relative to the side edges of accurate distance from their respective axes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.