Newport 5600 Series - Laser Diode Driver Operation; CW;QCW Laser Diode Driver

17
CHAPTER 3
3. Laser Diode Driver Operation
3.1 CW/QCW Laser Diode Driver
3.1.1 Introduction
Features of the 5600 include:
•
Closed-case calibration
•
High-stability, low noise design
•
Flexible setup with 5600 Save/Recall front panel functions
•
Detector feedback control mode
•
Internal modulation source
•
External modulation input
•
QCW (pulse) mode
•
Fault detection
•
Current and voltage limiting
CAUTION
Although ESD (electrostatic discharge) protection
is designed into the driver, operation in a static-
free work area is recommended.
3.1.2 Laser Diode Protection Requirements
Laser diodes are extremely sensitive to electrostatic discharge and current
spikes (transients). Damage can result in reduced output power, shift in
threshold current, changes in beam divergence, and ultimately failure to lase
(LED-like output only).
Newport precision current sources and controllers offer the most advanced
laser protection features available, including power line filters, clamping
current limits, and slow-start-up circuits.
However, no instrument can protect against all conditions, especially ESD at
the laser. In order to optimize immunity from radiated or conducted
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com