LDPProduct Features
Pulsed current output up to 5A
20V compliance voltage
Adjustable pulse width from 10 ns to 1 swith adjustable duty cycles up to 5%
Integrated 500 mA DC bias
USB and GPIB computer interfaces
Compatible with ILX LDM-4872 Quantum
Cascade Laser Mount

The LDP-3832 Pulsed Quantum Cascade Laser Current
Source is specifically designed for controlling quantum cascadelasers in sensitive spectroscopic applications. The LDP-3832
provides peak pulse current up to 5A with a compliance voltage
up to 20V and adjustable pulse widths from 10 ns to 1s. An
integrated DC current source, adjustable up to 500 mA, can beused to bias the laser and can be modulated with an external
input for tuning.
Careful attention to the design provides for highly
repeatable pulse to pulse amplitude and pulse width with fastrise times while maintaining overshoot to less than 5%.
Laser protection features incorporated in the LDP-3832
include redundant current limits, transient protection, floating
outputs, and safety interlocks. For seamless integration into yourautomated test application, the LDP-3832 comes standard with aGPIB/IEEE488.2 and USB computer interface. Additional
instrument flexibility is provided by trigger in and trigger
out functions to control pulses and initiate corresponding
measurements without a command program.

Pulsed QCLCurrent Source

PRELIMINARY

Precision pulsed current sourcefor quantum cascade lasers

3832

LDP
3832
Pulsed QCLCurrent Source

Specifications
VOLTAGE MONITOR (LPB-385)
PULSE OUTPUT
Range:
Accuracy:
Pulse Amplitude Repeatability:
Resolution:
Compliance Voltage:
Overshoot:Output:0.00 to 5.00A±1% + 10 mA±0.5% (of amplitude)
10 mA
20V
<5%Floating

PULSE PARAMETERS
Pulse Width
Range:
Resolution:
Accuracy (% of SP):
Repeatability:
Rise/Fall Time:

10 ns to 1 s
1 ns
1% of setpoint + 1 ns
±0.5 (of pulse width), measured
at 50% amplitude<5 ns

PULSE REPETITION INTERVAL (PRI)
Range
Internal:
External:
Resolution:
Accuracy:

500 ns to 1ms
500 ns to single shot
10 ns
±1% of set point

DUTY CYCLE
Range:
Resolution:
Accuracy

0.01% to 5.00%
0.01%±1% of set point

PRELIMINARY

500 mA
±1% of set point ±5 mA
1 mA
External, 0 to 10V>10 kHz

TRIGGER IN
Type:
Connector:
Delay:
Jitter:Pulse Width:
Delay Display Set Point
Resolution:

TTL
BNC
5.0 ns + adjustable
1.5 ns
100 ns
10 ns

TRIGGER OUT
Type:
Connector:
Delay:
Jitter:Pulse Width:
Delay Display Set Point
Resolution:

SMB
50

LASER DIODE PROTECTION
Output Shorting Relay
on LPB-385:
Current Limit
Pulse:
Bias:
Transient Protection
AC Power Failure / Brown Out

Normally closed
Adjustable, redundant hardware
Adjustable, redundant hardware

INTERLOCK INPUTInterlock 1 :Normally open, close toenable output
Normally closed, open toenable output; Normally high,TTL input, TTL low to disable
outputInterlock 2:

GENERAL (LDP-3832)
Power Requirements:
Size (HxWxD):
Weight:Operating Temperature:
Storage Temperature:
Humidity:
Regulatory:
Interface:

100 to 240 VAC, 50/60 Hz
102 mm x 216 mm x 330 mm(4.0” x 8.5” x 13.0”)
TBD+10°C to 40°C
-40°C to +70°C<85% relative
CE certified RoHs
SCPI, GPIB IEEE488.2, USB

GENERAL (LPB-385)

DC BIAS
Range:
Accuracy:
Resolution:
Voltage Control:
Bandwidth:

Connector:
Output Impedance:

TTL
BNC
5.0 ns + adjustable
600 ps50% of period

Size (HxWxD):
Weight:Operating Temperature:
Storage Temperature:
Humidity:
Regulatory:

14.4 cm x 11.4 cm x 2.54 cm(4.5” x 4.5” x 1.0”)
TBD+10°C to 40°C
-40°C to +70°C<85% relative
CE certified RoHs

NOTES
ORDERING INFORMATION
LDP-3832
CC-385
LPB-385
LDM-4872
LPC-388

Pulsed QCL Laser Current Source
LDP-3832 Output Cable
QCL Pulse Board
Pulsed QCL Mount
Current / Voltage Monitor Cable

In keeping with our commitment to continuous improvement,
ILX Lightwave reserves the right to change specifications without notice
and without liability for such changes.

10 ns

CURRENT MONITOR (LPB-385)
Connector:
Output Impedance

SMB50

For information callP.O. Box 6310, Bozeman, MT 59771 • FAX: 406-586-9405

www.ilxlightwave.com

1-800-459-9459
International Inquiries: 406-556-2481
email: sales@ilxlightwave.com

Rev01.072010