ST-BLT series burn-in testers are designed for laser diode manufacturing industry. Stand alone ST-BLT test stations are optimal for high power laser diode burn-in testing and quality assurance. Unique characterization features of ST-BLT testers make them also suitable for simultaneous laser diode characterization and data sheet generation. Each ST-BLT system is assembled to meet customer’s specifications on laser bar optical power, mechanical dimensions, measurement features and throughput.
A typical ST-BLT system consist simultaneous burn-in station for 10 to 50 high power laser diodes or bars each emitting up to 150 W of optical power. A system uses shared measurement instruments and laser diode temperature controller for all laser bars making it very cost effectivesolution when compared to competing systems.
ST-BLT systems have modular construction based on robust field bus technology. This construction makes high scalability and easy maintenance possible while keeping number of components minimum. Multiple ST-BLT systems can be operated from a single control computer. Devices under test (DUTs) are loaded into the system on multichannel load-trays that are equipped with an inpidual low resistance bypass switch over each DUT to allow series connected devices operating even in case of open circuit or empty slots. Load tray also features channel specific temperature and voltage monitors and optionally a channel specific temperature control.
|Scalability||1-64 ST-BLT cabinets per one system|
|DUT types||Laser diode, Laser bar, HB LED|
|On-line measurements||LIV, Spectrum, Temperature|
|Measurement cycle||User definable|
|Current drive||Up to 200 A CW or pulsed, up to 20 kW per cabinet|
|Temperature control||Water cooling with chiller TEC/peltier with inpidual DUT temperature setting|
|Safety & DUT fault detection||E-stop, Over-temperature, Smoke detector, Short circuits, Open circuits, Optical property change|
|Dimensions (W x H x D)||700 x 1800 x 1200 mm||Typical|
|Power||3 phase AC 380 VAC|
|Scalability||1-64 BLTnano cabinets per one system|
|DUT types||Laser diode, Laser bar, LED, HB LED|
|On-line measurements||Voltage, Temperature|
|Current drive||Up to 100 A CW or pulsed / up to 1 kW|
|Temperature control||Water cooling with chiller|
|Safety & DUT fault detection||E-stop, Over-temperature, Smoke detector, Short circuits, Open circuits|
|Dimensions (W x H x D)||700 x 500 210 mm||Typical|
|Power||1 phase 230 VAC|