Page 2 · 4200 Series
LaserSource
User’s Manual
Introduction
Thank you for choosing the
LaserSource
from Arroyo Instruments. Your
LaserSource
is a combination of leading edge technology combined with years
of experience in the field of current control.
With a crystal clear VFD display, both RS232 and USB computer interfaces, and
small footprint, the
LaserSource
will fit into almost any laser diode control
application.
A key feature of the
LaserSource
is its optical isolation of both modulation and
photodiode inputs. By isolating these inputs, it prevents unwanted ground loop
problems. No other laser diode driver in the industry has this feature.
The
LaserSource
also operates in constant voltage control mode, allowing you
to use it in precision voltage applications, such as EML devices, or for doing V-I
measurement graphs.
The
LaserSource
includes another feature not found in other products: the
ability to program the photodiode bias level from the front panel or over the
computer interface, to any voltage from 0 to -5V. No more tweaking a
potentiometer with a screwdriver and a DMM. Simply dial in the voltage you
need.
Unlike other laser diode drivers in its class, which use inexpensive 7-segment
LEDs, the
LaserSource
takes advantage of its large VFD display to
simultaneously show the set point, laser voltage, and photodiode read back.
The user interface of the
LaserSource
is engineered to make using the
instrument straightforward. With its text-based menus, there is never any
confusion over which setting is being changed, and parameters are displayed in
clear English (no cryptic numbers or LEDs to decode).
The
LaserSource
offers all the features you would expect from a modern
precision laser diode driver, including:
•
10ppm current stability over one hour
•
7V compliance for 100mA and 500mA
LaserSources
.
•
Comprehensive laser protection circuitry, include hardware voltage and
current limits, and fast transient shutdown.
•
External modulation up to 250 kHz (high bandwidth mode)
•
Power mode control, both in photodiode current (AMC) or computed
photodiode power (APC) modes.
•
Simultaneous reading of current set point, voltage measurement, and
photodiode current or power measurement.
