- Posted by Alejandro López Moya
- On July 6, 2021
In this success case, we present a complete Lot Acceptance Test (LAT) sequence that involves a high volume of tests (Mechanical, Environmental, Radiation, Assembly, ESD,..). But, on this occasion, the most tricky test to carry out was the Endurance test, where 12 lasers from different wavelengths (NIR, SWIR1, and SWIR3, from 350nm to 5um) were powered at their nominal current during 1000 hours while in vacuum conditions.
Test setup definition and implementation
Sometimes, Laser diodes characterization can be hard due to the laser’s nature. In addition, a good heat dissipation must be provided to avoid lasers being damaged. Special and complex equipment is required for a perfect characterization because accuracy is a must with this optical component. Tiny variations in the range of picometers must be detected to carry out a perfect characterization.
The real challenge? The test setup definition and implementation when lasers must be tested in extreme conditions, like vacuum or high/low temperatures.
- Calibration sources characterization in vacuum conditions - September 23, 2021
- IR sources thermal vacuum cycling characterization - July 19, 2021
- Lasers endurance characterization in vacuum conditions - July 6, 2021