DEI DLD-88b Datasheet

•

Pulse Doublet Frequency Up to
20MHz

•

Output Current Up To 120A

•

Pulse Width 20ns

•

Repetition Rates Up To 500Hz

DLD-88B

PULSED LASER
DIODE DRIVER

The DLD-88B is a high speed, high current pulsed
laser diode driver designed to generate two output
pulses (a doublet) when triggered. The delay
between the first and second pulses can be varied
through an on-board potentiometer. This feature can
be disabled through the enable/disable line, allowing
the DLD-88B to generate a single pulse when
triggered.

The double-pulse feature of the DLD-88B facilitates
testing, calibration and design of range finders,
FLIRs, and other instruments which require testing
and characterization of second-target rejection, and
other high burst frequency applications.

The DLD-88B is available in two models offering
80A and 120A maximum output current. Both
models have a nominal pulse width of 20ns, and a
maximum frequency of 500Hz. (Contact the factory
for other pulse width and frequency options.) The
doublet spacing is variable from 50ns to 500ns
between pulses, providing a burst frequency of
2MHz to 20MHz.

The driver incorporates laser diode mounting pads
on the circuit board that are designed to
accommodate CD-9MM, CD-5.6MM and TO-18
diode packages.

The Pulse Of The Future

Directed Energy, Inc.

• 2401 Research Blvd., Suite 108 • Fort Collins, CO 80526

TEL: [phone] • FAX: [phone] • EMAIL: [e-mail] • INTERNET: www.dirnrg.com

Pulse Doublet, 120 Amp Current, Minimum

Delay Between Pulses

Pulse Doublet, 120 Amp Current, ~150ns

Delay Between Pulses

The Pulse Of The Future

Directed Energy, Inc.

• 2401 Research Blvd., Suite 108 • Fort Collins, CO 80526

TEL: [phone] • FAX: [phone] • EMAIL: [e-mail] • INTERNET: www.dirnrg.com

DEI supplies solutions for the generation, delivery and measurement of high power,

high fidelity electrical pulses. Applications include lasers, test and measurement,

mass spectroscopy, radar and acoustics.

Please call, FAX or email for applications assistance or information on other DEI products.

DLD-88B 1298

SPECIFICATIONS

PARAMETER

DLD-88B-80A

DLD-88B-120A

Peak Output Current (First Pulse)

≥

80A, controlled by input high

voltage amplitude

≥

120A, controlled by input high

voltage amplitude

Peak Output Current (Second Pulse)

≥

90% of the amplitude of the first pulse, adjusted by PCB-

mounted potentiometer

Pulse Width (FWHM)

20ns ±5ns, fixed

Delay Between End of First Pulse And Start
of Second Pulse

~50ns to 500ns, controlled by PCB-mounted potentiometer

PRF (Pulse Recurrence Frequency), CW Single Shot to 500Hz, controlled by input trigger frequency
Gate (Trigger) In

+5V/50Ω, 50-100ns pulse width
Support Power +15V at 20mA
DC HV Input 490V MAX

MECHANICAL

Length 6.00in.
Width 2.25in.

ALL

SPECIFICATIONS MEASURED INTO A SHORTED OUTPUT

.

S

PECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

.

Technical Description

The DLD-88B is comprised of two charge-line pul­sers, driving a common output point through mi­crostripline interconnections.

On-board potentiometers control the delay time
between the first and second pulses, and allow
the amplitude of each pulse to be adjusted in rela­tionship to the other, within a ±10% window of
variation. The pulse enable/disable signal allows
the user to dynamically select whether the driver

Single Pulse Output, 120 Amp Current

DLD-88B Circuit Board Layout

generates a single pulse, or a pulse doublet,
when triggered.

The driver is an open-frame module. The output
current is controlled by the input DC power supply
voltage. The pulse frequency is controlled by the
trigger signal.

The driver requires an external DC power supply
(+490V maximum), +15VDC support power, a
gate signal (+5V/50Ω), and a pulse enable/disable

signal (TTL into 50Ω).