Method of sorting semiconductor lasers
US5446537A · kind A · utility
8Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jul 6, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
It is an object to provide a method of sorting semiconductor lasers, capable of appropriately removing semiconductor lasers which can cause a so-called sudden death in use. After a first current within a range of 50 to 150% the maximum rated current is supplied to the semiconductor lasers for a predetermined period of time, a second current is supplied within a range of 120 to 250% the maximum rated current for a short period of time. Semiconductor lasers which are destroyed or degraded in output characteristics are removed as defective devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.