Wavelength Electronics QCL500 Manual

Low Noise QCL Driver
Minimize spectral drift, center wavelength jitter,
and linewidth
GENERAL DESCRIPTION:
The QCL1500 includes patented circuitry
for driving Quantum Cascade Lasers (QCLs)
where electronic noise, coupled through the
laser, can affect measurements.
This is an OEM controller, designed to be
integrated into fi eld deployed systems or used
on a benchtop. It operates from dual DC power
supplies. Low noise can be achieved even with
certain switching power supplies.
An onboard Current Setpoint trimpot allows a DC
bias to be set. Its signal sums with a remote Analog
Input signal that can be negative or positive.
Safety: An onboard trimpot sets the current limit
as you monitor the setting - without driving current
through the QCL. Brownout, reverse voltage,
and overvoltage protection isolates the QCL from
power supply failures. An Overtemp Fault signal
minimizes the chance of failure due to overheated
electronics. An onboard Enable Switch controls
when current can fl ow to the QCL. A remote
Enable signal can also be used.
Applications: High
sensing in biomedical, imaging, spectroscopy,
remote sensing, military,
aerospace and materials processing industries.
To optimize noise performance in your application,
current range can be adjusted. Other product
variations are available.
factory with your requirements at 406-587-4910
or quietqcl@teamwavelength.com.
1
Covered by U.S. Patents 6,696,887; 6,867,644 and
7,176,755. Licensed from Battelle Memorial Institute.
© 2010
1 ideal
performance chemical
communications,
Please contact the
QCL1500-00400-D
November, 2010
FEATURES:
• Off the shelf models at 500 mA, 1 A, 1.5 A
• Can be delivered in other current ranges up to 2 A
- with noise minimized for your QCL
• Compliance voltage up to 16 V
• Low noise: < 1A RMS over 100 kHz bandwidth
(graphs on page 5)
• Analog Input Setpoint sums with onboard trimpot
• Safety: Current Limit, 1.25 second ON delay with
100 msec current ramp, Remote Enable signal,
brown out, reverse & over voltage, overtemp
protection circuits
• Remote Power On and Enable signals are TTL
compatible and fully isolated
• Adjustable Current Limit with monitor
• Local power & enable / disable switches
• Protection relay shorts output when current is
disabled
• Shielded from external interference
• Constant Current Mode operation
• 3 dB bandwidth 2 -3 MHz
• Status Outputs can drive LEDs
• Small Package 6.55 x 5.5 x 2.3"
• Compatible with P/N PTCxxK-CH precision
temperature controllers
• Accessories include cables and power supplies to
simplify integration.
Ordering Information
QCL500
500 mA Low Noise QCL Driver
QCL1000 1 A Low Noise QCL Driver
QCL1500
1.5 A Low Noise QCL Driver
QCL2000 Product Variations are available up to 2 A
QCL-SMA-ADAPT
Convert signal pins to SMA connectors
WCB310 Low Noise Cable: SMA to SMA
WCB311
QCL 20 pin connector with cables
WCB312 QCL Dual Power Supply wiring kit
PWRPAK-24V 24 VDC Switching Power Supply
NOISE SCAN Noise Characterization Scan
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RoHS
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