Chapter 3 Description - THORLABS EK2000 User Manual

OEM Laser Diode Driver Evaluation Kit

Chapter 3 Description

The EK2000 integrates the LD2000R with an evaluation board pre-wired for use
with a laser diode with an A-style pin configuration and a connection for a power
supply. The EK2000 allows users to quickly set up the LD2000R with a laser and
DC power supply without having to develop a custom PCB or extensive hand
wiring.
All of the LD2000R features are supported with convenient, easy to use
connector interfaces. The LD2000R is a low-noise, stable laser diode current
source that can be operated with laser diodes having a common laser anode and
monitor photo diode cathode (Pin Style A). The driver operates in an automatic
power control (APC) mode using the built-in monitor photo diode integrated in the
laser diode for feedback. On board trim pots are provided for controlling the laser
power and current limit. Both functions can also be controlled via an external
voltage source. The LD2000R supports a wide range of laser diodes with drive
currents up to 100 mA and photo diode currents from 20 µA to 2 mA. The
LD2000R also has an external modulation input to support applications that
require modulating the laser output.
The Laser Diode case must remain floating with respect to both the power
Read the section on using the EK2000 (page 4) before attempting to operate
The EK2000 uses CMOS circuitry to minimize power drain. Use anti-static
precautions while handling the LD2000R to prevent permanently damaging
Page 3
Figure 1 Compatible LD Pin Codes
supply ground, and the chassis ground.
the EK2000.
WARNING
the device.
NOTE
NOTE
Chapter 3: Description
Rev F, May 21, 2018