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PRO8 Laser Diode Current Control Modules


  • Ultra-Stable Current Control
  • Extensive Laser Diode Protection
  • External Modulation of Laser Output

LDC8080
Module

LDC8040
Module

LDC8040 & TED8040 Modules
Inside a PRO800 Chassis

Related Items


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PRO8 Laser Diode Current Control Module Options
Item # LDC8001 LDC8002 LDC8005 LDC8010 LDC8020 LDC8040 LDC8080
Max Laser
Diode Current
±100 mA ±200 mA ±500 mA ±1 A ±2 A ±4 A ±8 A
Module Width 1 Slot 2 Slots
PRO8 Series Optionsa
Laser Diode Current Controllers (Up to 8 A) PRO8000-4 High-Power Chassis with Modules
TEC Temperature Controllers (Up to 64 W)
Combination Laser Diode Current (Up to 1 A) &
TEC Temperature Controllers (Up to 16 W)
DWDM DFB Laser Modulesb
Optical Switches
Photocurrent Measurement Modules
  • Our PRO8 Series Chassis can accommodate multiple PRO8 Series Modules, allowing for a customized telecom solution.
  • Please contact Tech Support for availability of desired wavelength.

Features

  • Current Ranges: 0 to ±100 mA, ±200 mA, ±500 mA, ±1 A, ±2 A, ±4 A, ±8 A
  • Supports Anode Ground (AG) and Cathode Ground (CG) Polarities
  • Supports Constant Current (CC) and Constant Power (CP) Operation
  • 3 dB Analog Modulation Bandwidth DC up to 200 kHz
  • 16-Bit Setting Resolution
  • Full Laser Protection

Introduction
Our Laser Diode Controller Modules for the PRO8 platform have extremely low current noise and drift, resulting in "best in class" laser stability performance.

Seven Current Ranges
Seven different current controller modules are available, with maximum output currents ranging from 100 mA up to 8 A. The drive current can be set precisely with 16-bit resolution – one part in 65,000. All LDC8000 Modules can be operated in either constant current (CC), or constant power (CP) mode.

User-Friendly Controls
The PRO8 display menu allows easy configuration of any module in the chassis. Mnemonic symbols provide user-friendly access to all operational parameters. All settings are retained in memory and automatically recalled upon powering on the mainframe, as long as modules have not been moved to a different slot.

Built-in Laser Diode Protection Features
The LDC8000 Series Current Control Modules incorporate proven laser protection features to safeguard sensitive laser diodes. Besides common protection functions, such as current limits, soft start and interrupt protection, an advanced circuit design ensures that AC power-line transients or power outages, as well as RF pickup can not affect the laser diode.

For each current module, three independent limits can be set to safeguard the laser. Two of the limits are programmable and prevent the laser current and the laser power from exceeding the user defined maximum values. The third limit is set via a recessed front panel trim-pot that defines a “hardware” current limit and protects against programming errors and accidential adjustment of the front panel knob. Even while externally modulating the laser current, it is not possible to exceed either the hard or soft limits, whichever is lower. After activating the laser diode a soft-start function smoothly increases the laser current without overshoots and spikes.

Even in the case of an AC power interruption, the laser current remains transient-free. Voltage peaks on the AC line are effectively suppressed by electronic filters, shielding of the transformer, and careful grounding of the modules and chassis. The LDC8000 Series meets the international requirements regarding laser protection (e.g. CDRH US21 CFR 1040.10 and IEC 60825-1). All PRO8 systems include a key-operated power switch and an interlock.

To connect an LDC8001, LDC8002, LDC8005, LDC8010, LDC8020, or LDC8040 current controller to our TEC Mounts, a CAB400 cable (length 1.5 m) is required and can be ordered below. Note: Thorlabs does not offer a compatible cable for the LDC8080.

For further information, please contact our Tech Support Team.

Item # LDC8001 LDC8002 LDC8005 LDC8010 LDC8020 LDC8040 LDC8080
Current Control
Control Range (Continuous) 0 to ±0.100 A 0 to ±0.200 A 0 to ±0.500 A 0 to ±1 A 0 to ±2 A 0 to ±4 A 0 to ±8 Ac
Compliance Voltage >2.5 V >5 V >5 V >5 V >5 V >5 V >5 V
Setting Resolution 1.5 µA 3 µA 7.5 µA 15 µA 30 µA 70 µA 130 µA
Setting Accuracy (Full Scale) ±0.05% ±0.05% ±0.05% ±0.1% ±0.1% ±0.1% ±0.3%
Noise Without Ripple
(10 Hz To 10 MHz, RMS, Typical)
<1 µA <3 µA <5 µA <10 µA <20 µA <50 µA <100 µA
Ripple (50/60 Hz, RMS, Typical) <0.8 µA <1 µA <1 µA <1.5 µA <3 µA <4 µA <8 µA
Transients (Processor, Typical) <10 µA <15 µA <30 µA <50 µA <80 µA <120 µA <200 µA
Transients (Other, Typical) <0.100 mA <0.200 mA <0.500 mA <1 mA <2 mA <4 mA <8 mA
Drift 60 Min / 24 Hour
(Typical, 0 - 10 Hz, at Constant Ambient Temp.)
<0.5 µA/ <1.5 µA <0.5 µA / <1.5 µA <2 µA / <4 µA <5 µA / <20 µA <15 µA / <100 µA <25 µA / <150 µA <100 µA / <200 µA
Temperature Coefficient <50 ppm/°C
Power Control
Control Range of Photo Current 10 µA to 5 mA (Other Ranges Available upon Request)
Reverse Bias Voltage 0 / 5 V (Switchable)
Resolution 100 nA
Accuracy (Full Scale) ± 0.05%
Current Limit
Setting Range (20-Turn Trim-Pot) 0 to ≥0.100 A 0 to ≥0.200 A 0 to ≥0.500 A 0 to ≥1 A 0 to ≥2 A 0 to ≥4 A 0 to ≥8 A
Resolution 3 µA 6 µA 15 µA 30 µA 60 µA 130 µA 250 µA
Accuracy ±0.100 mA ±0.200 mA ±0.500 mA ±2 mA ±4 mA ±8 mA ±50 mA
Power Limit
Photo Current Range 0 to 5 mA
Resolution 1.25 µA
Accuracy ±50 µA
Laser Voltage Measurement
Measurement Principle 4-Wire (Improves Accuracy by Compensating for Cable Resistance)
Measurement Range 0 to 5 V
Resolution 0.2 mV
Accuracy ±5 mV
Analog Modulation Input
Input Resistance 10 kΩ
3dB-Bandwidth, CCa DC to 2.5 kHz DC to 200 kHz DC to 100 kHz DC to 50 kHz DC to 30 kHz DC to 20 kHz DC to 10 kHz
Modulation Coefficient, CC 10 mA/V ± 5% 20 mA/V ± 5% 50 mA/V ± 5% 100 mA/V ± 5% 200 mA/V ± 5% 400 mA/V ± 5% 800 mA/V ± 5%
Modulation Coefficient, CP 0.5 mA/V ± 5%
Rise & Fall Time, (Typical)b <100 µs <2 µs <4 µs <5 µs <6 µs <9 µs <15 µs
Connector Type BNC
General Data
Module Width 1 PRO8 Slot 2 Slots
Laser Diode Connector 9-pin D-Sub (f ) 15-pin HDD-Sub (f )
Weight <300 g <500 g <750 g
Operating Temperature 0 to 40 °C
Storage Temperature -40 to +70 °C
  • Small Signal Bandwidth
  • External TTL Modulation Synchronous for all Current Cards
  • 10 A Available Upon Request

LDC8001-40 Pin Configuration

DB9 Female
D-Type Female DB9 Pin Connector

Pin Connection
1 Output for Interlock and Status LASER ON/OFF
2 Monitor Diode Ground
3 Laser Diode Ground
4 Monitor Diode Input
5 Pin 1 Ground
6 Laser Diode Cathode
(Measurement Input for Laser Diode Voltage)
7 Laser Diode Cathode (with Polarity AG)
8 Laser Diode Anode (with Polarity CG)
9 Laser Diode Anode
(Measurement Input for Laser Diode Voltage)

LDC8080 Pin Configuration

HD15 Female
D-Type Female HD15 Pin Connector

Pin Connection
1 Laser Diode Cathode (with Polarity AG)*
2 Laser Diode Cathode (with Polarity AG)*
3 Laser Diode Ground*
4 Laser Diode Anode (with Polarity CG)*
5 Laser Diode Anode (with Polarity CG)*
6 Output for Interlock and Status LASER ON/OFF
7 Laser Diode Cathode (with Polarity AG)*
8 Laser Diode Ground*
9 Laser Diode Ground*
10 Laser Diode Anode (with Polarity CG)*
11 Laser Diode Cathode (Measurement Input for LD Voltage)
12 Monitor Diode Ground
13 Monitor Diode Input
14 Laser Diode Anode (Measurement Input for LD Voltage)
15 Ground for Pin 6

*To connect the laser ALL THREE PINS (1, 2, 7 and 3, 8, 9 or 4, 5, 10 and 3, 8, 9) must always be used.

LDC8001-40 Pin Configuration

DB9 Female
D-Type Female DB9 Pin Connector

Pin Connection
1 Output for Interlock and Status LASER ON/OFF
2 Monitor Diode Ground
3 Laser Diode Ground
4 Monitor Diode Input
5 Pin 1 Ground
6 Laser Diode Cathode
(Measurement Input for Laser Diode Voltage)
7 Laser Diode Cathode (with Polarity AG)
8 Laser Diode Anode (with Polarity CG)
9 Laser Diode Anode
(Measurement Input for Laser Diode Voltage)

External Modulation

bnc

LDC8080 Pin Configuration

HD15 Female
D-Type Female HD15 Pin Connector

Pin Connection
1 Laser Diode Cathode (with Polarity AG)*
2 Laser Diode Cathode (with Polarity AG)*
3 Laser Diode Ground*
4 Laser Diode Anode (with Polarity CG)*
5 Laser Diode Anode (with Polarity CG)*
6 Output for Interlock and Status LASER ON/OFF
7 Laser Diode Cathode (with Polarity AG)*
8 Laser Diode Ground*
9 Laser Diode Ground*
10 Laser Diode Anode (with Polarity CG)*
11 Laser Diode Cathode (Measurement Input for LD Voltage)
12 Monitor Diode Ground
13 Monitor Diode Input
14 Laser Diode Anode (Measurement Input for LD Voltage)
15 Ground for Pin 6

*To connect the laser ALL THREE PINS (1, 2, 7 and 3, 8, 9 or 4, 5, 10 and 3, 8, 9) must always be used.

The following parts are included together with each of our LDC8000 Series Current Controllers:

  • 1 LDC8000 Series Current Controller Module
  • Operating Manual

Posted Comments:
craig.brideau  (posted 2017-05-09 22:30:45.657)
Does the LDC8002 have a high enough compliance voltage to operate the LP488-SF20 and LP520-SF15 laser diodes?
swick  (posted 2017-05-11 03:18:54.0)
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. LP488-SF20 and LP520-SF15 require 7.5V and 8V forward voltage. LDC8002 provides 5V compliance voltage, which is not enough to drive these laser diodes. I will contact you directly for showing alternatives.

PRO8 Laser Diode Current Control Modules

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
LDC8001 Support Documentation
LDC8001PRO8000 Laser Diode Current Control Module, ±100mA, 1 Slot Wide
$1,261.75
Today
LDC8002 Support Documentation
LDC8002PRO8000 Laser Diode Current Control Module, ±200mA, 1 Slot Wide
$1,206.56
Lead Time
LDC8005 Support Documentation
LDC8005PRO8000 Laser Diode Current Control Module, ±500mA, 1 Slot Wide
$1,240.11
Lead Time
LDC8010 Support Documentation
LDC8010PRO8000 Laser Diode Current Control Module, ±1A, 1 Slot Wide
$1,250.92
Lead Time
LDC8020 Support Documentation
LDC8020PRO8000 Laser Diode Current Control Module, ±2A, 1 Slot Wide
$1,350.48
Lead Time
LDC8040 Support Documentation
LDC8040PRO8000 Laser Diode Current Control Module, ±4A, 1 Slot Wide
$1,361.30
Lead Time
LDC8080 Support Documentation
LDC8080PRO8000 Laser Diode Current Control Module, ±8A, 2 Slots Wide
$1,405.67
Lead Time

CAB400 Series Connection Cables

CAB400 9 Pin Diagram
CAB400 (9 Pin Male) Cable
Pin # Description
1 Interlock and Status LASER ON/OFF
2 Photodiodea
3 Laser Diode Ground
4 Photodiodeb
5 Ground for Pin 1
6 Voltage Measurement Laser Diode Cathodec
7 Laser Diode Cathode (with Polarity Anode Grounded - AG)
8 Laser Diode Anode (with Polarity Cathode Grounded - CG)
9 Voltage Measurement Laser Diode Anodec
  • LDC200C Series, Photodiode Cathode PRO8 Series: Photodiode Ground, Cathode or Anode (Configurable)
  • LDC200C Series, Photodiode Anode PRO8 Series: Photodiode Input, Anode or Cathode (Configurable)
  • LDC200C Series: N.C.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
CAB400 Support Documentation
CAB400Cable; Current Controller with 9-Pin D-Sub Connector, 1.5 m
$75.21
Today
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