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OEM Seed Laser Driver Assembly 760
■ OUTPUT CURRENT UP TO 2.5 AMPS
■ OUTPUT PULSEWIDTH 20ns TO CW
■ COMPLIANCE VOLTAGE TO 2.5V
■ ON-BOARD PULSE GENERATOR
■ DIGITAL OR ANALOG CONTROL
■ +5VDC INPUT POWER
■ RoHS COMPLIANT
DESCRIPTION:
AMI’s Model 762 OEM programmable seed laser diode drivers are ideal for driving 14-pin butterfly packaged laser diode modules for use in CW or pulsed fiber MOPA systems.
Applications include materials processing, LIDAR systems for remote sensing, laser communication and rangefinding.
OPERATING NOTES:
The driver circuitry operates from a single +5V power source. Additional voltages are generated on the board by high efficiency switching power supplies. The laser power input may be operated down to +3V to conserve power at the expense of switching speed. Input laser power may also be increased up to +12V to enhance switching speed for high inductance lasers. For most applications laser power may be tied to the driver +5V supply, or through an external switch as an additional safety interlock.
An on-board field programmable gate array (FPGA) is programmed to handle communications, to modify adjustable features, and to provide external flags and signals to a host system. The FPGA also contains a comprehensive pulse generation system with many programmable features. Adjustments can also be made through analog operation by the use of multi-turn potentiometers and providing an external TTL trigger pulse so a serial interface is not required. The driver supplies a bidirectional proportional-integral-derivative (PID) thermoelectric cooler (TEC) controller with current capability of 3A and voltage capability of 4.2V.
The 762-EXT is offered for those who require agile control of the laser current, want to modulate the current or drive the laser with arbitrary waveforms, pulses with variable rise/fall times or modified pulse flatness. An external control voltage with a calibration of 1A/V is required for this mode of operation and the potentiometer and digital control of the laser current are disabled.
The board is manufactured as a RoHS compliant assembly built to the Directive 2002/95/EC requirements. A heatsink adapter plate to mount to an external heatsink and all required mating cables are supplied with each unit. Contact AMI today to discuss your custom requirements.
APPLICATIONS:
Seed Laser Diode Driver/Pump Laser Diode Driver for Pumping Fiber Lasers