Full Automatic Measurement For Laser Chips At Three Controlled Temperatures
Description of the Opto System Laser Diode Chip Tester VMS3300
Knowing the behavior of your chips at the actual application temperature can be hard to achieve in a fast speed manufacturing environment. This full automatic tool from Opto System is a masterpiece in integration of machine vision, testing equipment and chip handling know-how. Although it is used for edge emitter laser diodes, it can be custom built for other types of semiconductor chips as well that need efficient testing at different temperatures. The tool automatically picks up the chip from your tape, places it on the first temperature-controlled chuck and performs a full electro-optical characterization before moving it forward to the second chuck where the same set of measurements is performed at a different temperature up to 90°C. The next step is to measure the chip on the third chuck at a new pre-set temperature. In this setup, we offer an option to include temperature measurement capability down to -45°C. To avoid condensation, a dedicated housing and dry air is implemented. In all chucks the measurements include the integral light output power, the spectrum and the electrical properties. You may even set an electron-absorbtion-modulator (EAM) voltage as well for data communication laser types. According to the specified criteria, the laser chips are sorted in different GelPaks or rings. This means you can offer your chips specified at the application temperature because you have tested it.