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20 mA - 4 A Laser Diode Drivers


  • Constant Current or Constant Power Driving of Laser Diodes
  • Extremely Low Noise
  • Compatible with all Laser Diode & Photodiode Polarities
  • Current Limit and Interlock for Laser Diode Protection

LDC205C

CAB400

LDC240C Front

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Features

  • Extremely Low Noise (LDC201CU 0.2 μA)
  • 5-Digit LED Display
  • Analog Control Input and Output
  • Reliable Laser Diode Protection
  • Operates With All Polarities of Laser Diode and Photodiode
  • Seven Models With Laser Current Ranges From 20 mA to 4 A
  • Certificate of Calibration and Test Report Included

The laser diode controllers in the LDC200C series all provide features that ensure outstanding performance. There are seven models with different current ranges, each configured to provide optimal performance for their particular application. Every unit ships with a certificate of calibration as well as a full test report. Please refer to the Specs tab and the Selection Guide tab for an overview of the products.

Modes

With the laser diode controllers of the LDC200C series, laser diodes can be driven in constant current (CC) or constant power (CP) mode. All laser diode and photodiode configuration types are supported. The laser diode is always driven with respect to ground. In comparison to driver designs that require a floating ground, this grounded operation of the laser diode offers advantages regarding noise, transient suppression, and stability.

Constant Current
In CC mode, the current to the laser is held precisely at the prescribed level. This mode is used when the lowest noise and highest response speed is required. Most applications in this mode require stabilizing the temperature as well. We offer two lines of temperature controllers, the TED200C for up to 12 W and the TED4015 for up to 225 W.

Constant Power
In CP mode, the internal photodiode integrated into most laser diode packages is used to actively stabilize the laser's output power, which is adjusted by a feedback circuit. An adjustment of the full scale photodiode current in CP mode is provided in order to compensate for the differences in the photodiode currents between different laser diodes.

Controller Use

Intuitive User-Friendly Operation
Independent of the selected operating mode, the 5-digit LED display can show the laser current, the photodiode monitor current, or laser current limit. It can also display the optical power (in mW). The power readout can be calibrated to the responsivity of the monitor photodiode by adjusting a front panel trim potentiometer. In many applications, the aforementioned benefits eliminate the need for a separate optical power meter.

Additional Rear Panel Controls
Available for use at the rear of the unit are: a modulation input for laser current or power (which can be used to pulse the laser diode output), a control output proportional to the laser current, and a TTL input for remote laser on/off.

Protection Features

Current Limit
A precisely adjustable current limit ensures that the maximum laser current cannot be exceeded. Thorlabs has intentionally provided limited access to this feature to prevent accidental adjustment. An attempt to increase the laser drive current above the pre-set limit will result in a visible and short audible indicator. Even when utilizing the external modulation feature, the current limit set-point cannot be exceeded.

Current Source
If the connection between the current source and laser diode is interrupted, the current source automatically switches off the current output. The open current circuit condition is indicated by the LED "OPEN" and a short acoustic warning. The separate laser ON key switches the laser current on and off. When switched off, an electronic switch within the LDC200C short circuits the laser diode for added protection. After being switched on, a soft start ensures a slow increase of the laser current without voltage peaks. Even in the case of line failure, the laser current remains transient-free. Voltage peaks on the AC line are effectively suppressed by electrical filters, shielding of the transformer, and careful grounding of the chassis.

Connection Cables

A CAB400 is required to connect the LDC200C series laser diode controllers to a Thorlabs' Laser Diode Mount. One cable is included with each laser diode controller, it has a length of 1.5 m. Additional cables can be ordered below.

Item # LDC200CV LDC201CU LDC202C LDC205C LDC210C LDC220C LDC240C
Current Control (Constant Current Mode)
Control Range 0 to ±20 mA 0 to ±100 mA 0 to ±200 mA 0 to ±500 mA 0 to ±1 A 0 to ±2 A 0 to ±4 A
Compliance Voltage >6 V >5 V >10 V >10 V >10 V >4 V >5 V
Resolution 1.0 µA 10 µA 10 µA 10 µA 100 µA 100 µA 100 µA
Accuracy ±20 µA ±50 µA ±100 µA ±0.5 mA ±1.0 mA ±2.0 mA ±4.0 mA
Noise Without Ripplea <1.0 µA <0.2 µA <1.5 µA <3 µA <5 µA <15 µA <50 µA
Rippleb <0.5 µA <0.5 µA <1.5 µA <2 µA <3 µA <5 µA <8 µA
Transients (typ.) <10 µA <10 µA <0.2 mA <0.5 mA <1 mA <2 mA <4 mA
Drift, 24hoursc <1 µA <2 µA <3 µA <10 µA <20 µA <100 µA <200 µA
Temperature Coefficient <50 ppm/°C
Current Limit
Setting Range 0 to >20 mA 0 to >100 mA 0 to >200 mA 0 to >500 mA 0 to >1 A 0 to >2 A 0 to >4 A
Resolution 1 µA 10 µA 10 µA 10 µA 100 µA 100 µA 100 µA
Accuracy ±50 µA ±200 µA ±500 µA ±1.5 mA ±2.5 mA ±5 mA ±10 mA
Power Control (Constant Power Mode)
Photocurrent Control Range 5 µA to 2 mA 25 µA to 10 mA 50 µA to 20 mA
Photocurrent Resolution 0.1 µA 1 µA 1 µA
Photocurrent Accuracy ±2 µA ±10 µA ±20 µA
Analog Modulation Input
Input Resistance 10 kΩ
Small Signal 3dB Bandwidth,
CC Mode
DC to 100 kHz DC to 0.2 kHz DC to 250 kHz DC to 150 kHz DC to 100 kHz DC to 50 kHz DC to 30 kHz
Modulation Coefficient,
CC Mode
2 mA/V ± 5% 10 mA/V ± 5% 20 mA/V ± 5% 50 mA/V ± 5% 100 mA/V ± 5% 200 mA/V ± 5% 400 mA/V ± 5%
Modulation Coefficient, CP Mode 0.2 mA/V ± 5% 1 mA/V ± 5% 2 mA/V ± 5%
Laser Current Monitor Output
Load Resistance >10 kΩ
Transmission Coefficient 500 V/A ± 5% 100 V/A ± 5% 50 V/A ± 5% 20 V/A ± 5% 10 V/A ± 5% 5 V/A ± 5% 2.5 V/A ± 5%
General data
Safety Features Interlock, Laser Current Limit, Soft Start, Short Circuit when Laser Off,
Open Circuit Detection, Over Temperature Protection
Display LED, 5 Digits
Connector for Laser, Photodiode,
Interlock & Laser On Signal
9-pin D-Sub Jack
Connectors for Control
Input / Output
BNC
Chassis Ground Connector 4 mm Banana Jack
Line Voltage / Frequency 100 V, 115 V, 230 V +15% –10% each / 50 to 60 Hz
Maximum Power Consumption 20 VA 20 VA 25 VA 30 VA 40 VA 60 VA 100 VA
Mains Supply Overvoltage Category II (Cat II)
Operating Temperature 0 to 40 °C
Storage Temperature -40 to 70 °C
Relative Humidity Max. 80% Up to 31 °C, Decreasing to 50% at 40 °C
Pollution Degree (Indoor Use Only) 2
Operation Altitude <2000 m
Warm-up Time for
Rated Accuracy
10 min
Weight <3.1 kg <3.3 kg
Dimensions (W X H X D)
without Operating Elements
146 x 66 x 290 mm³
Dimensions (W X H X D)
with Operating Elements
146 x 77 x 320 mm³
  • 10 Hz to 10 MHz, rms, Typical
  • 50/60 Hz, rms, Typical
  • 0 - 10 Hz Typical, at Constant Ambient Temperature

All technical data valid at 23 ± 5 °C and 45 ±15% relative humidity.

LDC Front Panel

CalloutConnectionCalloutConnection
15-Digit LED Display9Display Indicators
2Display Units10Up/Down Display Select
3Interlock Indicators11Diode Polarization Indicator
4Laser Status Indicator
5Laser Current On/Off Switch12Output Mode Indicator
6Display Adjustment Knob13Diode Polarization Select
7Supply Power Switch14Output Mode Select
8Current Limit and Power Calibration Pots15Photodiode Current Range Pot

LDC Back Panel

CalloutConnectionCalloutConnection
1TTL Input "LD REM" 0 to 5 V6Connector "LD OUT" for LD, PD, Interlock, & Status LED
2Modulation Input / Analog Control Input "MOD IN", -10 to +10 V7Serial Number of the Unit
3Analog Control Output "CTL OUT",
-10 to +10 V
8Indicator / Switch for Line Voltage (Included in Fuse Holder)
4Cooling Fan
54 mm Banana Jack for Chassis Ground9Power Connector and Fuse Holder
Pin Connection Pin Connection
1 Interlock and Status LASER ON/OFF 6 Not Connected
2 Photodiode Cathode 7 Laser Diode Cathode (with Polarity Anode Grounded - AG)
3 Laser Diode Ground 8 Laser Diode Anode (with Polarity Cathode Grounded - CG)
4 Photodiode Anode
5 Ground for Pin 1 9 Not Connected

Laser Diode Connector

DB9 Female

Laser Diode Remote*

BNC

*TTL Input
(0...+5 V)

Modulation Input**

BNC

**Analog Control Input
(-10 V ...10V)

Control Output***

BNC

***Analog Control Output
(0 ...±10 V)

Chassis Ground

4 mm Banana Jack


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Posted Comments:
Poster:s.zhou
Posted Date:2017-08-16 12:06:09.48
Hi Thorlabs, I am using a LDC202C current source in constant current mode, and find that the I_LD_SET changes over time. As I am using a function generator to control the current source, when I_LD_SET changes, the current output also changes. Could you explain me what is exactly the I_LD_SET and what will affect its value? I can't find much information about it on the manual. Thanks.
Poster:mvonsivers
Posted Date:2017-08-17 04:04:32.0
This is a response from Moritz at Thorlabs: Thank you for your inquiry. When modulating the current with an external voltage source, I_LD_SET is an offset value that can be changed using the control knob. I will contact you directly for further details.
Poster:ltli
Posted Date:2017-08-14 13:03:35.617
Hi, we have some problem on your LDC240C current source. The current source was in normal use (~1.3A, connected to an AG laser diode) but suddenly generated a buzzer sound and stopped working in the last week. The current source has no output current and the LED display shows "-----" when selecting ILD. However, the display of ILIM is normal. Can you give us some suggestion?
Poster:mvonsivers
Posted Date:2017-08-17 06:18:11.0
This is a response from Moritz at Thorlabs: Thank you for your inquiry. It would be best to send in the unit to us for inspection. You will be contacted by us for further information.
Poster:artur.rackos
Posted Date:2017-05-12 11:15:17.12
Dear Thorlabs, is your laser diode driver LDC205C compatible with laser ’PLT5 520_B1_2_3’ with built-in photodiode? How can I connect ’PLT5 520_B1_2_3’ with photodiode in reverse bias mode?
Poster:swick
Posted Date:2017-05-15 03:21:52.0
This is a response from Sebastian at Thorlabs. Thank you for the inquiry. This Laserdiode is compatible to LDC205C and has Pin Style A (LD Anode and PD Cathode connected to Ground). If the Photodiode shall be operated with bias voltage, a battery can be connected in series to the Photodiode. You can find further information in the manual of LDC205C on page 12. I will contact you directly to provide assistance.
Poster:
Posted Date:2017-03-29 22:39:34.45
Would it be possible to have a strain relief version of the CAB400? I like the SR9 cables a lot, but changing the diode drive to one with TEC meaning I have to give them up. The CAB400 in comparison is too rigid.
Poster:swick
Posted Date:2017-03-31 03:06:09.0
This is a response from Sebastian at Thorlabs. Thank you very much for the feedback. At the time we do not offer Strain Relief Cables for laserdiodes based on CAB400. We will internally discuss this idea.
Poster:
Posted Date:2016-10-11 13:48:19.68
Why is the current listed as ±? It doesn't make sense to me to be able to reverse the current. For one thing the LD won't function and can be damaged by reversing leads. In fact other LD drivers will switch off if you attempt to energize with reversed leads, which is a useful safety feature. Does this model have that feature?
Poster:swick
Posted Date:2016-10-13 03:28:48.0
This is a response from Sebastian at Thorlabs. Thank you very much for your inquiry. The ± is referred to the feature Anode Grounded (AG) and Cathode Grounded (CG). While keeping the Compliance Voltage positive the Electrical Current has to be positive for CG and negative for AG. For LDC-Series if the laser diode was connected correctly but the polarity of the laser diode was selected wrong, an “OPEN” error will be indicated. After pressing "LASER ON" the LED "OPEN" extinguishes and the output can be switched on by pressing "LASER ON" again.
Poster:kedves
Posted Date:2015-12-12 11:24:02.757
Dear Thorlabs, is your laser diode driver DC201CU compatible with your LED sources, e.g. LED631E? We need a very stable current driving for a LED and we have such a laser diode driver. I suppose we can use it, cannot we? Best regards
Poster:shallwig
Posted Date:2015-12-14 05:10:02.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. The LDC201CU can deliver up to 100mA constant current at 5V compliance voltage. The LED631E can be driven up to 50mA (max rating) at typically 2.2V. You can find these information in the spec sheet of the Driver http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=10&pn=LDC201CU and LED http://www.thorlabs.de/thorcat/16200/LED631E-SpecSheet.pdf You can use this driver in “constant current” mode to run the LED. There is no ready to use mount for these LEDs available, for correct connection please check the Pin assignment of CAB400 cable: http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=10&pn=LDC201CU The Interlock Pin 1 and pin 5 must be connected externally by a short cut wire, by a circuit (total resistance <430 Ohm) : The current limit should be set at the ILim potentiometer to maximum 50mA. Please also take care of the soldering specifications which are mentioned in the LED spec sheet as well as correct pin assignment. I will contact you directly to check if there are any open questions.
Poster:faisal_ipa3
Posted Date:2015-04-17 16:49:18.22
Hi, I am using Thorlabs LDC 205C and LM9LP. I would like to pulse signal on them. I am looking for external analog modulation for LDC 205C. Is that offered by Thorlabs? Thanks.
Poster:shallwig
Posted Date:2015-04-20 02:21:55.0
This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. Unfortunately we do not offer function generators so far. There are various options from other manufacturers, I will contact you directly to discuss your needs in detail.
Poster:prax.jean.sebastien
Posted Date:2015-03-02 15:40:30.787
Dear Madam or Sir, I currently have an LDC210C and want to drive an FPL1009P laser diode on an LM14S2 mount. I would like the diode to deliver a pulse with a frequency of 10MHz. Can I achieve this with the external modulation input? Thank You.
Poster:tschalk
Posted Date:2015-03-04 09:28:59.0
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The bandwidth of the analog modulation input of the LDC210C is DC to 100kHz and a modulation of 10MHz is not possible. But the laser mount LM14S2 provides a RF modulation input (BIAS-T) for an external modulation up to 500MHz. You can find more detailed Information in the corresponding Manual at RF Modulation: http://www.thorlabs.de/thorcat/10600/LM14S2-Manual.pdf
Poster:ferrari
Posted Date:2013-10-22 17:24:50.883
Dear Madam or Sir, I am using an LDC202 to drive a diode laser, and I would like to protect the diode when the controller is not connected or not working using a shorting Reed relay. This relay would be driven with the 10mA current available through the interlock pins 1 and 5 while the laser is "on". To do this I would need a voltage of the order of 5V between pin 1 and 5, but instead I found about 2.3V. Is there a possibility to increase this voltage to about 5V. Thank you, Gabriele Ferrari
Poster:tschalk
Posted Date:2013-10-24 06:13:00.0
This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. The interlock is not designed to be used as an external signal. Because of the internal logic circuit its not possible to provide the signal you would need for your application. I will contact you directly with more detailed information.
Poster:bdada
Posted Date:2012-05-17 15:38:00.0
Response from Buki at Thorlabs: Thank you so much for your feedback and suggestion. We agree that it would be helpful to make the modulation bandwidth more visible, especially since these Laser Diode controllers look alike but have different modulation bandwidths. We will look into offering an immediate and long term solution. Thank you again for sharing your thoughts. Please contact TechSupport@thorlabs.com if you would like to discuss this further.
Poster:
Posted Date:2012-05-16 17:20:10.0
Please consider printing the modulation bandwidth on the back panel next to the control input, this would save some of us from wasting valuable time. I was using your LDC201CU and didn't realize the BW was just 0.2 KHz as i was familar with the LDC202 which has a 250 KHz BW, silly me i just assumed they would be the same.
Poster:jvigroux
Posted Date:2012-01-10 10:00:00.0
A response from Julien at Thorlabs: thank you for your inquiry! Yes the LDC200C series can be used also in pulsed operation when using the external modulation input.
Poster:hautlutao
Posted Date:2012-01-10 15:54:47.0
Dear Mr. or Mrs. Could the LDC laser diode driver driven laser diode operating in pulsed mode ?
Poster:jvigroux
Posted Date:2011-12-13 12:23:00.0
A response from Julien at Thorlabs: Thank you for your feedback! We'll put the links to the required cables on this product page as well as on the product page of the TED200C.
Poster:rsavioli
Posted Date:2011-12-13 10:44:09.0
Why don't you have any information pointing to the CAB400 and related interface cables on this page or any other LDC or TED pages, with the exception of the PRO8 stuff? I just spent 10 minutes looking for them and finally had to pull out a catalog.
Poster:bdada
Posted Date:2011-10-03 09:23:00.0
Response from Buki at Thorlabs: Thank you for so much your feedback. Our design engineers will look into this issue and we will contact you to discuss what you can do to improve the feel or performance of the knob.
Poster:olsonaj
Posted Date:2011-10-02 10:30:21.0
Have had this controller for a couple years. An issue I've had is the front current control knob is very loose, and makes it hard to tune the current precisely (esp. important for manually current-tuning the wavelength of a diode laser). Also, at times the knob seems "loose" and the current will jump around between different values. Perhaps this is a faulty connection? On future designs I recommend a sturdier current control knob.
Poster:bdada
Posted Date:2011-04-08 14:50:00.0
Response from Buki at Thorlabs to Emmanuel: Thank you for your feedback, Emmanuel. We will contact you shortly to discuss your set up and verify the laser diode is connected properly to the driver.
Poster:emmanuel.vanbrackel
Posted Date:2011-04-08 09:01:22.0
I have a big issue with this kind of driver. Up to now, I used a home-made driver that was built many years ago. Nevertheless, I needed a less noisy source, so I bought this. I tried to plug my laser diode (HL 6320G), following each documentation (of the diode, AG, following the pins correctly ; of the current controller, connecting the right pins to their right place, chose properly the polarity on the driver, set the limit for the current to 70 mA, put the knob to the left,...) : and when I push "laser on", when no current, its ok. But as soon as I get 0.1 mA, the open lights up, and no current anymore. I tried other cables configurations, verified that my diode works (with the old controller). Whats wrong ? Has anyone experienced that ? Bests
Poster:jhartmann
Posted Date:2009-08-13 12:52:30.0
A response from Juergen at Thorlabs to joonggun.ha: This error message indicates a hardware failure. From experience it is known to us, that in 99% of such cases the reason for this failure is operation of the item at 230V AC while it was set to 100/115V AC. Of course, mains fuse blows, however during fuses reaction time damages to electronic circuitry may happen. After replacement of mains fuse and setting to correct AC, the unit switches on, but indicates only "Err.05", no operation is possible. The unit must be returned for repair to Thorlabs, this repair is NOT covered by warranty as the unit has been used inappropriate: We put an eyecatching yellow sticker accross the AC power connector on the rear panel, alerting the operator "Use correct voltage setting and fuse - see manual". So prior to apply AC voltage, this sticker must be removed. Please contact the Sales office, from where it has been purchased, for return instructions.
Poster:joonggun.ha
Posted Date:2009-08-12 22:21:52.0
We have a litter LDC202C LD Controller. Today, one controller displyed an error message and did not work. The message is "Err.05". I recheck operation manual but could not find this error message. What is the problem? Please, answer ASAP.
Poster:juergen
Posted Date:2008-07-23 10:49:09.0
Hi Ina, Thank you for your feedback. Manual and web specs are correct - LDC201CU is an ultra low noise driver. This is achieved by a low pass filter on the current output. Due this LPF, the max. modulation frequency in CC mode is 200Hz (-3dB, small signal) In VOL19, p.419, spec table, 200kHz is stated, which is wrong. We will correct that. Juergen Hartmann
Poster:ina.kinski
Posted Date:2008-07-18 01:50:28.0
Hi, there is a typo both on this webpage and the operation manual that comes with this laser diode controller (p. 37): The small signal 3dB bandwidth (cc mode) goes up to 200kHz, not 200Hz. Thanks

Laser Diode Controller Selection Guide

The tables below are designed to give a quick overview of the key specifications for our laser diode controllers and dual diode/temperature controllers. For more details and specifications, or to order a specific item, click on the appropriate item number below.

Current Controllers
Item # Drive Current Compliance Voltage CCa CPb Modulation Package
LDC200CV 20 mA 6 V  Yes!  Yes! External Benchtop
VLDC002 25 mA 5 V  Yes! - Int/Ext OEM
LDC201CU 100 mA 5 V  Yes!  Yes! External Benchtop
LD2000R 100 mA 3.5 V -  Yes! External OEM
EK2000 100 mA 3.5 V -  Yes! External OEM
LDC202C 200 mA 10 V  Yes!  Yes! External Benchtop
TLD001 200 mA 8 V  Yes!  Yes! External T-Cube
IP250-BV 250 mA 8 Vc  Yes!  Yes! External OEM
LD1100 250 mA 6.5 Vc -  Yes! -- OEM
LD1101 250 mA 6.5 Vc -  Yes! -- OEM
EK1101 250 mA 6.5 Vc -  Yes! -- OEM
EK1102 250 mA 6.5 Vc -  Yes! -- OEM
LD1255R 250 mA 3.3 V  Yes! - External OEM
LDC205C 500 mA 10 V  Yes!  Yes! External Benchtop
IP500 500 mA 3 V  Yes!  Yes! External OEM
LDC210C 1 A 10 V  Yes!  Yes! External Benchtop
LDC220C 2 A 4 V  Yes!  Yes! External Benchtop
LD3000R 2.5 A --  Yes! - External OEM
LDC240C 4 A 5 V  Yes!  Yes! External Benchtop
LDC4005 5 A 12 V  Yes!  Yes! Int/Ext Benchtop
LDC4020 20 A 11 V  Yes!  Yes! Int/Ext Benchtop
  • Constant current.
  • Constant power.
  • When using a 12 V power supply.
Dual Temperature and Current Controllers
Item # Drive Current Compliance Voltage TEC Power (Max) CCa CPb Modulation Package
VITC002 25 mA 5 V >2 W  Yes!  - Int/Ext OEM
ITC102 200 mA >4 V 12 W  Yes!  Yes! Ext OEM
ITC110 1 A >4 V 12 W  Yes!  Yes! Ext OEM
ITC4001 1 A 11 V >96 W  Yes!  Yes! Int/Ext Benchtop
CLD1010LPc 1.0 A >8 V >14.1 W  Yes!  Yes! Ext Benchtop
CLD1011LPd 1.0 A >8 V >14.1 W  Yes!  Yes! Ext Benchtop
CLD1015e 1.5 A >4 V >14.1 W  Yes!  Yes! Ext Benchtop
ITC4002QCLf 2 A 17 V >225 W Yes! Yes! Int/Ext Benchtop
ITC133 3 A >4 V 18 W  Yes!  Yes! Ext OEM
ITC4005 5 A 12 V >225 W  Yes!  Yes! Int/Ext Benchtop
ITC4005QCLf 5 A 20 V >225 W  Yes!  Yes! Int/Ext Benchtop
ITC4020 20 A 11 V >225 W  Yes!  Yes! Int/Ext Benchtop
  • Constant current.
  • Constant power.
  • Combined controller and mount for pigtailed laser diodes in TO can packages with A, D, E, or G pin codes only.
  • Combined controller and mount for pigtailed laser diodes in TO can packages with B, C, or H pin codes only.
  • Combined controller and mount for laser diodes in butterfly packages only.
  • Enhanced compliance voltage for QCL operation.

We also offer a variety of OEM and rack-mounted laser diode current & temperature controllers (OEM Modules, TXP Rack Modules, PRO8 Current Control Rack Modules, and PRO8 Current and Temperature Control Rack Modules).

20 mA - 4 A Laser Diode Drivers

LDC200C Series LD Current Controllers
The laser diode controllers in the LDC200C series all provide features that ensure outstanding performance. There are seven models with different current ranges, each configured to provide optimal performance for their particular application. Every unit ships with a certificate of calibration as well as a full test report. Please refer to the Specs tab and the Selection Guide tab above for an overview of the products.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
LDC200CV Support Documentation
LDC200CVBenchtop LD Current Controller, ±20 mA
$1,064.00
Today
LDC201CU Support Documentation
LDC201CUBenchtop LD Current Controller, ±100 mA
$1,064.00
Today
LDC202C Support Documentation
LDC202CBenchtop LD Current Controller, ±200 mA HV
$1,009.00
Today
LDC205C Support Documentation
LDC205CBenchtop LD Current Controller, ±500 mA HV
$1,009.00
Today
LDC210C Support Documentation
LDC210CBenchtop LD Current Controller, ±1 A HV
$1,064.00
Today
LDC220C Support Documentation
LDC220CBenchtop LD Current Controller, ±2 A
$1,166.00
Today
LDC240C Support Documentation
LDC240CBenchtop LD Current Controller, ±4 A
$1,268.00
Today

CAB400 Series Connection Cables

CAB400 (9 Pin Male)PIN #
CAB400 9 Pin Diagram 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

a LDC200C Series, Photodiode Cathode PRO8 Series: Photodiode Ground, Cathode or Anode (configurable)
b LDC200C Series, Photodiode Anode PRO8 Series: Photodiode Input, Anode or Cathode (configurable)
c 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 / Ships
CAB400 Support Documentation
CAB400Cable; Current Controller with 9-Pin D-Sub Connector, 1.5 m
$69.50
Today
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