OEM Laser Diode & Temperature Controllers

Overview
LD Specs
TEC Specs
Pin Diagrams
Shipping List
Feedback
Selection Guide

Features

Combined Current and TEC Controllers
Maximum Laser Currents of 200 mA, 1 A, or 3 A
Constant Current (CC) and Constant Power (CP) Modes
Full PID Feedback Loop with Independent P, I, and D Settings
Extensive Protection Against Laser Diode Damage
Supports Many Standard Pin Configurations for Easy Integration into Systems

These 100 mm x 160 mm board-level controllers combine a low-noise, low-drift current source with a precise TEC controller. Designed for easy integration into OEM applications, these euro-sized boards are ideal for products or systems where excellent laser emission stability is required. The analog interfaces offer easy access to parameter settings and readout.

These laser diode controllers support constant current (CC) and constant power (CP) modes, as well as all laser and monitor diode polarities (CG/AG). The connected laser interfaces with the controller through a 15-pin D-Sub connector. A fixed-ground-level design significantly improves noise, transient suppression, and output stability. The laser operating current can be modulated by an external control signal.

The built-in temperature controller includes a full PID feedback loop with independent P, I, and D settings, which can be individually optimized. A wide variety of temperature sensors (such as thermistors and the AD590 Temperature Transducer) are supported. A standard 64-pin PCB connector provides access to output signals, analog control inputs, power supply connections, temperature sensors and thermoelectric cooler elements.

Accessories
We offer a display board (ITC100D) and front panel (ITC100F) for viewing and setting the system control parameters. In addition, we manufacture a 9-pin and 15-pin Y-cable (CAB430) for connecting the controller to our family of laser diode mounts with built-in TECs.

For further information, please contact Technical Support.

Laser Diode Controller Specifications

Item #	ITC102	ITC110	ITC133
Current Control
Display Laser Current On	LED
Trim Potentiometers (15 Turn)	I_LD, I_PD Resp. P_LD, I_LD,LIM
Control Range of Laser Current	0 to ±200 mA	0 to ±1 A	0 to ±3 A ^a
Compliance Voltage	>4 V
Setting Accuracy / Repeatability (Full Scale)	±2% Typical / ±0.1%
Noise (10 Hz to 10 MHz, rms)	<2 µA	<6 µA	<25 µA
Drift (30 min, 0 to 10 Hz, Typical)	<20 µA	<100 µA	<300 µA
Temperature Coefficient	<50 ppm/°C
Power Control
Control Range Photo Diode Current	5 µA to 2 mA
Accuracy / Repeatability (Full Scale)	±2% Typical / ±0.1%
Photodiode Reverse Bias Voltage	0 V or 5 V
Current Limit
Setting Range	0 to >200 mA	0 to >1 A	0 to >3 A
Setting Accuracy / Repeatability (Full Scale)	±2% Typical / ±0.1%
Analog Modulation Input
Input Resistance	10 kΩ
Modulation Coefficient, CC	40 mA/V ± 5%	200 mA/V ± 5%	600 mA/V ± 5%
Small Signal 3 dB Bandwidth, CC	DC to 200 kHz	DC to 50 kHz	DC to 20 kHz
Modulation Coefficient, CP	0.4 mA/V ± 5%
TTL Modulation Input
Rise/ Fall Time	<10 µs	<50 µs	<100 µs
TTL Control Input	LD ON
Measurements and Control Outputs
Analog Measurement Values	I_LD, I_PD, I_LD,LIM
Measurements Outputs	0 to ±5 V
Measurements Accuracy (Typical, Load > 500 kΩ)	±2%
TTL Control Outputs	LD ON, LIMIT
General Data
Supply Voltage / Current	±12 to ±15 V / 2.3 A	±12 to ±15 V / 3.1 A	±12 to ±15 V / 3.1 A ^a
Operating Temperature	0 to 40 °C
Storage Temperature	-40 °C to 70 °C (Non-Condensing)
Warm-Up Time for Rated Accuracy	10 min
Dimensions (W x H x D)	100 mm x 42 mm x 160 mm (Eurocard)
Weight	< 0.7 kg

The total combined current for the ITC133 is limited by the total thermal dissipation loss. Optimized cooling by fan or a larger heat sink allows 3 A LD and 3 A TEC at the same time, provided the power supply provides 6.1 A

All technical data are valid at 23 ± 5 °C and 45 ±15% relative humidity (non-condensing).

TEC Controller Specifications

Item #	ITC102	ITC110	ITC133
Temperature Control
Display TEC Current ON	LED
Trim Potentiometers (15 Turn)	I_TEC,LIM, T_SET / R_SET
Trim Potentiometers (1 Turn)	P, I and D Share
TEC Output
Control Range of TEC Current	-2 A to +2 A	-2 A to +2 A	-3 A to +3 A ^a
Compliance Voltage	>6 V
Maximum Output Power	12 W	12 W	18 W
Noise and Ripple	<1 mA	<1 mA	<3 mA
Thermistor Temperature Sensors
Control Range	100 Ω to 80 kΩ
Setting Accuracy (Full Scale, Typical)	±2%
Repeatability (Full Scale)	±0.1%
Temperature Stability (Typical)	<2 Ω
IC Temperature Sensors AD590, AD592, & LM335
Control Range	-20 °C to 80 °C
Setting Accuracy (Full Scale, Typical)	±2%
Repeatability (Full Scale)	±0.1%
Temperature Stability (Typical)	<0.004 °C
TEC Current Limit
Setting Range	0 to ≥2 A	0 to ≥2 A	0 to ≥3 A
Accuracy (Typical)	±5%
Temperature Control Inputs
Analog Control Input	T_SET / R_SET
Input Resistance	10 kΩ
Input Coefficient Thermistor	16 kΩ/V
Input Coefficient IC-Sensor	20 °C/V
TTL Control Input	TEC ON
Measurement and Control Outputs
Analog Outputs	T_SET/R_SET, T_ACT/R_ACT, I_TEC,LIM (I_TEC, ΔT/ΔR)
Measurement Accuracy (Typical, Load > 500 kΩ)	±2%
TTL Control Outputs	TEC ON, TEMP OK

The total combined current for the ITC133 is limited by the total thermal dissipation loss. Optimized cooling by fan or bigger heat sink allows 3 A LD and 3 A TEC at the same time, provided the power supply provides 6.1 A.

All technical data are valid at 23 ± 5 °C and 45 ± 15% relative humidity (non-condensing).

ST1 64-Pin I/O Jack

ST1 64-pin

ST2 15-Pin I/O Jack

DB15 Female

Pin	Connection	Pin	Connection
1	Interlock	9	Bias (-)
2	Monitor Diode Cathode	10	Laser Diode Cathode (Polarity AG)
3	Laser Diode Ground	11	Laser Diode Anode (Polarity CG)
4	Monitor Diode Anode	11	Laser Diode Anode (Polarity CG)
5	Interlock Ground	12	Bias (+)
6	AD 590 (+)	13	AD 590 (-)
7	TEC (+)	14	Thermistor Ground
8	TEC (-) (ground)	15	Thermistor

ST4 - SMB Male

Laser Diode Modulation Input

SMB Male

-5 to +5 V
40/200/600 mA/V (ITC102/110/133)

ST5 - SMB Female

Temperature Tune Input

SMB Male

-5 to +5 V
20° C/V / 16 kΩ/V (Transducer/Thermistor)

ITC102	ITC110	ITC133	Part
x			OEM Laser Diode and Temperature Controller, ±200 mA / 12 W (ITC102)
	x		OEM Laser Diode and Temperature Controller, ±1 A / 12 W (ITC110)
		x	OEM Laser Diode and Temperature Controller, ±3 A / 18 W (ITC133)
x	x	x	Operating Manual

Posted Comments:

Ludovic Angot (posted 2020-07-14 08:43:10.653)

Can the ITC133 be used with any L.D. pin code, in particular pin code G? On pages 15 to 17 of the current version of the manual (3.2, jun 2020), I see no mention and no configuration example of using a LD without photodiode. If this is possible, is there any particular hardware setting to apply?

MKiess (posted 2020-07-14 09:15:32.0)

This is a response from Michael at Thorlabs. Thank you very much for your inquiry. On page 15 to page 17 in the current manual, only the general, possible configurations of the combinations of laser and monitor diode are shown. It is also possible to connect a laser diode with respect to ground, individually. You can also use the CAB430 to connect the ITC133 controller with a Thorlabs' laser mount suitable for G-style laser diodes, which can be found under the following link: https://www.thorlabs.de/navigation.cfm?guide_ID=35 I have contacted you directly to discuss the connection in your specific case.

nick Yang (posted 2020-05-26 21:55:23.467)

Hi, I'm requesting inquiry in terms of operating ITC110. Currently, we are using a gain chip that has only Thermistor and not transducer. Is there a way for us to interpret thermistor resistance value in terms of temperature Celsius?

wskopalik (posted 2020-05-29 06:32:27.0)

This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry! The display ITC100D as well as the analog output on the ITC110 will unfortunately only return the resistance value when a thermistor is used as a temperature sensor. It cannot be converted into a temperature value automatically. Thermistors have a specified relation between their resistance and the temperature which is usually given in their data sheets. So you could manually convert the resistance value to a temperature value by using this relation. I will contact you directly to provide further assistance.

Youngjin Ahn (posted 2020-02-20 03:52:20.213)

Hi, our lab have purchased the ITC110 product with ITC100D. However, we are having trouble to turn on the LED display panel from the ITC100D. We have connected two 15V power supplies in series in order to supply the voltage range between -15V to +15V. Also, we have designed the circuit by following the schematic diagram given in the manual. We have, connected this circuit with ITC110 and connected -15V, GND, and +15V to the pins described in the manual. By considering that circuit that we made is correct, could you recommend any method to further check if there is any issues why the LED panel on ITC100D doesn't turn on. Sincerely, Youngjin Ahn

dpossin (posted 2020-03-04 09:10:50.0)

Dear Ahn, Thank you for your feedback. I have contacted you via E-Mail in order to discuss your setup with you and provide further help.

damien.marchand (posted 2019-01-17 08:53:18.96)

Hi, We bought the following parts for laser diode control: Part numbers are: ITC133. We use it on Laser pulsed diode in current mode. Is it possible to use mode power constant on this type of laser ( pulsed) ? Thanks for your answer

swick (posted 2019-01-29 05:41:56.0)

This is a response from Sebastian at Thorlabs. Thank you for the inquiry. It is possible to control Laserdiodes in constant-power (CP) mode and modulate it at the same time but modulation bandwidth will be lower compared to constant-current (CC) mode. It depends on the pulsed-type laser diode and corresponding driving parameters if CP-mode could be used. I contacted you directly to provide assistance.

gksthf666 (posted 2018-11-15 21:42:01.943)

To whom it may concern, Hello, I'm Hansol Jang and I have some question about ITC110. Recently we've bought some of ITC110 but does not use yet because of supply voltage problem. The supply voltage and current shown in spec sheet are +-12 to 15 V and 3.1A respectively. Following are my question. 1. Should we supply +15V and -15V at a same time? 2. Required current of each voltage channel (+15 and -15V) is 3.1A right? 3. We are going to supply voktage to ITC110 with SMPS but it is very hard to find products which satisfy both two channel output (+15 and -15V) and current of 3.1A or more. Most of multi channel SMPS have different current level according to output channel (ex) +15V, 2A and -15V, 0.5A). Could you recommend supplying method or instruments (such as SMPS, AC-DC converter..) for ITC110 please? 4. Finally we need to use two ITC110 at a same time so much higher current level is required I think. Sincerely, Hansol Jang

wskopalik (posted 2018-12-05 09:02:40.0)

This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry! Please find the answers to your questions below: 1. Yes, you need to connect +15V, GND and -15V at the same time to the pins described in the manual (A30 - A32, C30 - C32). 2. Yes, the current would need to be 3.1 A for each voltage channel. 3. You can e.g. use a lab power supply to supply the ITC. These are available for different voltage and current ranges. So you would need to make sure that the particular power supply can provide the needed current and voltage level. 4. Each ITC110 needs to be supplied with the required current at the required voltage. So depending on how you connect the ITCs and the power supplies, the total current would double.

ergulmuhammed (posted 2018-09-07 05:42:47.003)

Hİ, I have mistyped twice in my previous post. Please discard it and consider this one here: We bought the following parts for laser diode control: Part numbers are: ITC102 ITC100D ITC100F CAB430 LDM9LP and we have combined ITC102,ITC10D,ITC100F and tried to run. Although I do supply the required voltage, Led2 (indicator of Vcc) does not light but the 7-segment display works, but it does not show reasonable values and the values do not change even though I change the potentiometer. Where am I doing wrong?

swick (posted 2018-09-14 03:33:22.0)

This is a response from Sebastian at Thorlabs. Thank you for the inquiry. I contacted you directly for troubleshooting.

ergulmuhammed (posted 2018-09-06 08:48:48.523)

Hİ, We bought the following parts for laser diode control: Part numbers are: ITC102 ITC100D ITC100F CAB430 LDM9LP and we have combined ITC102,ITC10D,ITC100F and tried to run. Although I do not supply the required voltage, Led2 does not light but the 7-segment display works, but it does not show reasonable values and the value does not change even though I do not change the potentiometer. Where am I doing wrong?

swick (posted 2018-09-14 03:36:45.0)

This is a response from Sebastian at Thorlabs. Thank you for the inquiry. I contacted you directly for troubleshooting.

leticia.tarruell (posted 2018-05-11 19:42:55.61)

Hello, We do have a broken ITC 133. Is it possible to ship it for repair?

YLohia (posted 2018-05-11 03:06:33.0)

Hello, thank you for contacting Thorlabs. We are sorry to hear that. Please contact your local Thorlabs Tech Support team (europe@thorlabs.com) for troubleshooting and potential RMA for repair.

francisco.rodriguez (posted 2018-03-19 17:56:41.697)

Dear sirs, We have purchased this product for testing it in our lab and it is now runing quite good. We have now to make an integration and select a compact power supply. Could you tell us what is the maximum tolarated ripple at the input? Thank you in advance Best Regards Francisco

swick (posted 2018-04-10 04:04:50.0)

This is a response from Sebastian at Thorlabs. Thank you for the inquiry. For ITC100-Series we recommend to use PSU with <50mV ripple.

nluo (posted 2017-10-26 14:08:12.467)

Hi, this is Nan with Calient. We bought the following parts for laser diode control: Part numbers are: ITC102 ITC100D ITC100F CAB430 But there is no user manual or how can we adjust laser diode current or power. Where can we have user manual? Thanks Nan

wskopalik (posted 2017-10-27 07:19:17.0)

This is a response from Wolfgang at Thorlabs. Thank you very much for your inquiry. You can find all the available documents for a product when you click on the red document icon left of the part number in the overview tab of this website. This will open a pop-up window with links to the documents. For all other products on the website this is the same. I will also contact you directly.

dawnjlu (posted 2015-09-25 23:14:57.653)

Hello, I was wondering how to remove the large knob on ITC100D when I want to install ITC100F to the ITC100D. I have tried several methods, but all failed, the knob looks fixed on ITC100D very well. Thank you. Li

shallwig (posted 2015-09-28 11:07:01.0)

This is a response from Stefan at Thorlabs, Thank you very much for your feedback. The head of the control knob with the black line is a cap which is just plugged in. By removing this cap you have access to a screw which fixes the knob to the board. I will contact you directly to check if there are any further questions.

nursidik.yulianto (posted 2015-09-09 23:46:41.663)

How to measure temperature at celcius degree. i use ITC 102 and ITC 100D for DFB laser 0-70C

shallwig (posted 2015-09-10 04:23:13.0)

This is a response from Stefan at Thorlabs. Thank you very much for your inquiry. There are several ways to get the actual temperature with the ITC102 displayed. In the manual on page 6 http://www.thorlabs.de/thorcat/7100/ITC102-Manual.pdf you can find the TEC specifications and temperature sensors control range. With the ITC100D display panel connected you can display the “Set” and “Actual” temperature on the display. Please check that the Jumpers are set as described in the manual from page 45-46: For the ITC102 both jumpers ILD and ILim have to be at position 1. With the knob you can display from counter- clockwise to clockwise following parameters: Photo diode current IPD Laser diode current ILD Laser diode limit current ILIM Set temperature1) (or resistance2)) value TSET Actual temperature1) (or resistance2)) value TACT TEC limit current ITLIM For higher display accuracy you should re-calibrate the ITC100D from time to time. For adjusting Tact bring your temperature sensor to a well-defined temperature and adjust the ITC100D reading to that temperature using potentiometer P5. P5 is the second potentiometer from the right below the turning knob, please see also the picture in the manual on page 45. Alternatively you can also read out the temperature from the 64 pin connector directly at Pin C10 (see manual page 19 for the pin diagram). The actual temperature (TACT ) can be calculated with the conversion factor 50mV/°C from the voltage drop (-1 ... +4 V ) along a load resistance, we recommend to use at least 500kOhm load. I will contact you directly to check if you have any further questions.

yangkwanmo0109 (posted 2014-02-24 16:16:30.4)

I'm trying to figure out how to play with the TEC mode of ITC100. When I change the Tset to a certain value (I changed it to 40C when Tact was at 26.1C), the Tact seems to change super slowly. Is this normal? Reading through the manual (the polarity part in the TEC section), it seems like the Tact reaching the Tset seems pretty fast, so that we can check the polarity of the system. Also, it seems like Tact is increasing when LD is on, and is decreasing when LD is off. I am having trouble with the temperature control. Any help?

jvigroux (posted 2014-02-24 10:52:33.0)

A response from Julien at Thorlabs: Thank you for your feedback! Based on the description of the problem, it seems that the settings of the temperature feedback loop might be the issue. the user can set the PID as well as the maximal TEC current so as to adapt the TEC driver to the system considered. I will contact you directly to discuss the exact details of your set up.

leticia.tarruell (posted 2013-12-17 15:39:44.22)

Hello, Is there any plan to extend the OEM ITC controllers to higher current ranges? It would be very helpful to be able to drive TA chips with them, and many require up to 4.5A

tschalk (posted 2013-12-19 09:08:26.0)

This is a response from Thomas at Thorlabs. Thank you very much for your inquiry. There are no plans to extend the current ranges of these controllers. We could offer you a special item which can provide a higher current. I will contact you directly with more detailed information.

sebastien.avila (posted 2013-10-02 11:26:18.64)

Hello, We want to use the ITC133 in a portable application and our power supply comes from a 24VDC battery pack. Do we need to convert the voltage into +/-12VDC ou simply +12VDC? Is there a power supply that you can reccomend us to use the ITC133 from a 24VDC battery? Thank you very much. Best Regards, S. AVILA.

jlow (posted 2012-09-07 08:40:00.0)

Response from Jeremy at Thorlabs: While the ITC133 can be used to drive the L915P1WJ, you will still need other devices such as a TEC mount, adequate heat sink (and maybe a fan to cool the fins of your heat sink as well). You would also need a power supply that can provide the adequate current (please see page 11 of the manual for the specifications).

jintaixun (posted 2012-09-07 03:31:59.0)

Hi I'm a university student from South Korea and have an enquiry about ITC133 In my bio-optics laboratory, I've got some high-power laser diodes such as L915P1WJ and others pin code A or D. Can I drive them with ITC133 safely without any other devices?

bdada (posted 2011-04-07 15:45:00.0)

Response from Buki at Thorlabs: Thank you for your feedback. We have corrected the specification of the ITC133 current control range.

user (posted 2011-04-07 15:25:41.0)

Current control range spec for the ITC133 shows units of mA while it should be A.

Laurie (posted 2009-04-24 12:11:09.0)

Response from Laurie at Thorlabs to hase: Thank you for your inquiry for our OEM diode and temperature controllers. We do have several customers that use this instrumentation for telecom fiber testing applications, as well as a leading manufacturer of subsystems that implements these. Unfortunately, we do not have any specific data for the mean time between failures of these items. If you can provide us with your requirements, we will discuss your application with our engineers to see if we can ensure that this item will meet your needs.

hase (posted 2009-04-15 04:53:48.0)

Could you give me the reliability data of ITC102 and PDB140C, such as MTBF? I am considering if they can be integrated into a system for telecom fiber testing application.

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	Constant Current	Constant Power	Modulation	Package
LDC200CV	20 mA	6 V			External	Benchtop
VLDC002	25 mA	5 V		-	Int/Ext	OEM
LDC201CU	100 mA	5 V			External	Benchtop
LD2000R	100 mA	3.5 V	-		External	OEM
EK2000	100 mA	3.5 V	-		External	OEM
LDC202C	200 mA	10 V			External	Benchtop
KLD101	230 mA	≤10 V			External	K-Cube™
IP250-BV	250 mA	8 V^a			External	OEM
LD1100	250 mA	6.5 V^a	-		--	OEM
LD1101	250 mA	6.5 V^a	-		--	OEM
EK1101	250 mA	6.5 V^a	-		--	OEM
EK1102	250 mA	6.5 V^a	-		--	OEM
LD1255R	250 mA	3.3 V		-	External	OEM
LDC205C	500 mA	10 V			External	Benchtop
IP500	500 mA	3 V			External	OEM
LDC210C	1 A	10 V			External	Benchtop
LDC220C	2 A	4 V			External	Benchtop
LD3000R	2.5 A	--		-	External	OEM
LDC240C	4 A	5 V			External	Benchtop
LDC4005	5 A	12 V			Int/Ext	Benchtop
LDC4020	20 A	11 V			Int/Ext	Benchtop

When using a 12 V power supply.

Dual Temperature and Current Controllers
Item #	Drive Current	Compliance Voltage	TEC Power (Max)	Constant Current	Constant Power	Modulation	Package
VITC002	25 mA	5 V	>2 W		-	Int/Ext	OEM
ITC102	200 mA	>4 V	12 W			Ext	OEM
ITC110	1 A	>4 V	12 W			Ext	OEM
ITC4001	1 A	11 V	>96 W			Int/Ext	Benchtop
CLD1010LP^a	1.0 A	>8 V	>14.1 W			Ext	Benchtop
CLD1011LP^b	1.0 A	>8 V	>14.1 W			Ext	Benchtop
CLD1015^c	1.5 A	>4 V	>14.1 W			Ext	Benchtop
ITC4002QCL^d	2 A	17 V	>225 W			Int/Ext	Benchtop
ITC133	3 A	>4 V	18 W			Ext	OEM
ITC4005	5 A	12 V	>225 W			Int/Ext	Benchtop
ITC4005QCL^d	5 A	20 V	>225 W			Int/Ext	Benchtop
ITC4020	20 A	11 V	>225 W			Int/Ext	Benchtop

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, PRO8 Current Control Rack Modules, and PRO8 Current and Temperature Control Rack Modules).