Burn - In System for laser bars

Beratron GmbH in cooperation with the Fraunhofer Institute for Laser Technology (ILT) offers customer specific Burn-In Systems for laser bars. The Burn-In Systems are especially designed for develpment purposes, e.g. allowing individual test parameters for each test channel. The CW/Pulsed current - sources are based on Beratrons reliable design.

Example of a Burn - In System

In cooperation with Fraunhofer Institute for Laser Technology (ILT) the following descriped Burn-In System was built. 20 test channels arranged in four levels in a single rack are connected via CAN-Bus and controlled by a Computer. Adaptor plates allow the adaption oft test channels to various heat sink geometries. Laser bars mounted to actively cooled as well as passively cooled heat sinks can be operated. The maximum operation temperature is 70 °C.

Individual test parameters can be defined for each test channel by a graphical user interface. The Burn-In System acquires the following data in user defined time intervals:

• laser output power (relative)
• operating current
• operating voltage
• cooling water / base temperature
• 
  

All data is stored in a database and can be displayed online on the graphical user interface. The Burn-In System permanently monitors all safety relevant functions. Using a web browser, remote observation of data an system status is possible.

Features

Applications

Technical specificationion

Burn-In System can be operated in different operation and test modes.

These can be combined individually for each test channel.

• Continuous wave (CW) operation: max. 150 A
• Pulsed operation: max. 200 A
• pulse width 100us - 400us
• duty cycle 1% - 50%
• Switched operation (on/off cycles)
• max. 150 A
• switching frequency 0,1 Hz - 10 Hz
• Constant current mode
• degradation of output power is determinded
• Constant power mode
• output power is kept constant
• Characteristic (P-I-V) curves

The modular setup of the Burn-In System allows the easy extension and adaption of the system according to customer requirements.

• Number of test channels up to 64 per rack
• Maximum pulse operation current up to 500 A
• Additional monitoring of the wavelength
• Customer specific user interface and database connectionace and database connection

Data sheets

Manuals

Technical Papers