Doc 2136-D01 Rev E 1/24/02
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General information
This manual contains the operating instructions for the LDC 500 laser diode controller by
Thorlabs
. In the first
chapter you will find a general description of the units, technical specifications, a list of the available accessories,
safety instructions and the warranty. Chapter 2 contains detailed operating instructions. Chapter 3 offers service
information.
We aim to develop and deliver optimally suited laser diode controllers for your application. To reach this goal,
we need your suggestions on how our products can be further improved. Please let us know your proposals
and criticisms. We and our distributors are at your disposal at any time.
Thorlabs, Inc.
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General description
The LDC 500 laser diode controller by
Thorlabs
is an extremely precise controller for laser diodes and LEDs. When
used with the Thorlabs TEC2000 temperature controller, the laser current or the optical output power and the
temperature of the connected laser diode can be precisely regulated. Thus the laser diode works as a stable optical
transmitter.
The LDC 500 laser diode controller is well suited for:
- Safe and simple operation of all laser diodes up to 0.5A
- Power stabilized light sources
- Wavelength tuning by controlling the current
- Wavelength modulation by current modulation
To protect the laser diode against damage, the LDC 500 provides the following protection circuitry:
- Softstart function
- Adjustable laser current limit
- Safety Interlock (open circuit monitoring of the laser diode mount connection)
- Electronic short-circuit for the laser diode
- Separate enable switch to turn the laser diode current on and off
- Monitoring LED for LASER ON mode
Features:
•
The LDC 500’s front panel arrangement makes it easy to use.
•
The operating levels (laser current, current limit, laser power, photodiode current), selected via a push button
switch, are shown on an illuminated 4½-digit LCD display.
•
The on/off delay and the soft start function protect the laser diode against undesired spikes.
•
An independent limit for the laser current can be set with a 20-turn potentiometer, protecting the laser diode from
operating errors.
•
When the output is open, an electronic switch short-circuits the current output and no voltage is applied to the
laser diode.
