LD5TC10 LAB Series Combination Laser Diode & Temperature Control Instrument

  • Output Current 5A Laser & ±10A TEC
  • Compliance Voltage 10V Laser & 15V TEC
  • Compatible with most sensor types and all LD/PD combinations
  • Temperature stability better than 0.0009°C
  • Laser cumulative current noise of 16 μA RMS
  • Modulation input bandwidth of 450 kHz (CC mode)
  • Intuitive user interface touchscreen
  • Adjustable current limits, over- and under-temperature protection
  • IntelliTune® PID temperature control

From: $3,800.00

Bulk Pricing (6 - 14): $3667.00

Contact Factory for High Volume Pricing
Price adjustments will be reflected in the cart. For availability information please contact us. All prices are in US dollars and are subject to change without notice. Prices do not include shipping charges. An additional OEM discount applies on orders over 14 pieces. Contact factory for pricing. If ordering from or shipping to Australia, China, or Hong Kong, please contact your distributor.

The LDTC LAB Series instruments combine best-in-class low noise, high-end digital control laser diode driver technology with an IntelliTune® smart temperature controller. If you need stable wavelength, stable temperature (better than 0.0009ºC with thermistors), stable laser diode current or power, or low noise (RMS laser driver noise as low as 7 µA), these offer the best performance and value.
Two models are available, the LD2TC5 LAB and the LD5TC10 LAB. The LD2TC5 LAB outputs up to 2 and 5 A for the laser and thermoelectric, respectively. The LD5TC10 LAB outputs up to 5 and 10 A. Both models offer 10 V of laser compliance voltage and 15 V of thermoelectric compliance voltage.

The touch-screen interface makes operation intuitive and simple. A LabVIEW® virtual instrument, remote command set, and USB interface allow integration into an instrument library.

Operation in Constant Current (CC) or Constant Power (CP) mode changes with the touch of a button. A wide variety of sensors work in the temperature control feedback loop.

We are sure that once you experience the precision, stability and ease-of-use of our touchscreen instruments, you’ll be convinced that they are ideal for your high performance application. We are offering a test drive any instrument for 30 days for free.  Activate the test drive.


Safety features protect the thermoelectric cooler (TEC) and the laser. Positive and negative (where applicable) current limits with Brick-Wall Never-Exceed circuitry can be set. If the sensor signal is lost or a short is detected at the TEC, output current is disabled. Passive and active interlocks are available for safety of equipment and user. You can link laser diode current to safe and stable thermoelectric operation. The instrument comes with a variety of other powerful safety features to protect your equipment:

  • Load failure protection
  • Over- and under-Temperature limits on the load
  • Current/voltage limits for both TEC and laser
  • Automatic laser shutdown upon TEC error available

With Wavelength’s plug and play instrument, you have the ability to quickly set the controls using either the instrument touch screen or a remote computer, and results are easy to monitor.


Wavelength’s proprietary IntelliTune algorithm characterizes the TEC/sensor system’s response to the controller and determines the optimal PID control coefficients. It then automatically adjusts the PID control values as setpoint, tuning mode, or bias current change.

Run IntelliTune easily just off ambient and watch it change PID settings for a much higher or lower setpoint. After a single scan, explore either optimized Setpoint Response or Disturbance Rejection performance with your load to see which works best. Add or remove the D term to see if noise is an issue. IntelliTune lets you skip the manual characterization and it’s smart enough to really work—very little adjustment is needed after you have stored a successful characterization scan. See Application Note AN-TC13: IntelliTune® vs. Conventional Autotune for an in-depth exploration.


An Interlock Kit containing a BNC terminator for the laser interlock and a pre-soldered DSUB to satisfy the laser interlocks is included with the instrument. Loose connectors for custom cable configuration (CKL-103, CKT-202, and CKT-204) are shipped with the unit. Full cables for both the laser connection and the thermoelectric connection are available.

The LDMOUNT-5A, a 14-pin butterfly laser diode mount with integrated heat sinking, is available for simple connections between the LDTC and the laser.


The ultra-stable temperature controller/laser driver instruments are particularly reliable for diverse fields such as medical, defense, communications and manufacturing. Applications include particle and droplet measurement, communications, manufacturing test, and medical systems. Additionally, our products are designed for use with electro-optical systems, airborne instrumentation, spectroscopic monitors, and medical diagnostic equipment.

Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. The standard product can be easily modified to meet your application requirements.

Dimensions: 3.91 x 8.86 x 17.75 in (98 x 224 x 450 mm)
Supply Range: 100-240 VAC (±10%), 3 A, 50-60 Hz
Remote Interface: USB

Output Current: 5 A
Compliance Voltage: 10 V
Cumulative Noise (RMS): 16 µA
Noise Current Density: 50 nA/√Hz
Output Current Stability: 125 ppm
Laser Display Resolution: 100 µA (<1 A) or 1 mA (≥1 A)
Modulation Bandwidth: 450 kHz (Constant Current mode)
Rise/Fall Time: 800 ns (to full scale, CC mode)
Temperature Coefficient: 75 ppm/°C (full scale)

Output Current: ±10 A
Compliance Voltage: 15 V
Temperature Stability: 0.0009°C
Temperature Display Resolution: 0.001 °C
Sensors Supported: Thermistors, 2-wire RTDs, linear current, linear voltage
Temperature Coefficient: 25 ppm/°C
IntelliTune: Disturbance Rejection or Setpoint Response


Laser Wiring Thermoelectric Wiring
Thermistor Wiring LM335 Wiring AD590 Wiring

Laser Control Screen

Thermoelectric Control Screen

Dual Monitor Screen

Related FAQs

FAQ1001: What does the Compliance Voltage specification in laser diode drivers mean?
FAQ1007: What limits the temperature control range of a temperature controller?
FAQ1009: Why won't my temperature controller settle my load to temperature?
FAQ1010: Why does it take so long to settle to the setpoint temperature?
FAQ1011: Why won't my load stabilize to your temperature controller specification?
FAQ1012: Why is my load heating when it should be cooling?
FAQ1014: What DC power supplies do you recommend to achieve the stability specifications listed in your manuals?
FAQ1015: Should I use a switching power supply for my application?
FAQ1016: How do I view and print your manuals on-line?
FAQ1017: An empty screen appears when I try opening a PDF manual. What does this mean?
FAQ1019: Which address do I use to remit payment or a purchase order?
FAQ1022: Where do I send my unit for repair or calibration?
FAQ1085: Do the temperature controllers always provide full current to the driven element (a TEC or Peltier device, or resistive heater) when the actual temperature does not equal the set point temperature?
FAQ1117: The temperature of my resistive heater is slow to stabilize and is not within specification.
FAQ1120: What does the Compliance Voltage specification in temperature controllers mean?
FAQ1150: What are the differences between a wavelength meter and a spectrometer?
FAQ1158: What software can I use for mechanical downloads?
FAQ1161: What are some important parameters to consider before purchasing a product?
FAQ1163: How does grounding the thermoelectric cooler cable on temperature controllers affect the noise level?
FAQ1171: How do I connect multiple drivers or controllers to a single power supply?


LDTC INTLK KITLDTC Lab Series Interlock Replacement Kit$35
LDMOUNT-5ALDMOUNT 5A Butterfly Laser Diode Mount$599
WCB319WCB319 LDMOUNT Cable for the TC LAB Series (no Lock)$129
WCB326WCB326 LDMOUNT Cable (Type A/B) for the LDTC LAB Series Combo Instrument$89
WCB327WCB327 LDMOUNT Cable (Type C) for the LDTC LAB Series Combo Instrument$89
WCB407WCB407 TE/RH/Sensor DB15+2 Cable Assembly for the LDTC LAB Series$189
WCB408WCB408 Laser Diode Type A/B Cable Assembly for the LDTC LAB Series$49
WCB409WCB409 Laser Diode Type C Cable Assembly for the LDTC LAB Series$49

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