LD5TC10 LAB Series Combination Laser Diode & Temperature Control Instrument

  • COMING SOON: Contact Sales for availability
  • 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 8.5 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


Contact Factory for OEM 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 9 pieces. Contact factory for pricing. If ordering from or shipping to Australia, China, Hong Kong or Israel please contact your distributor.

The LDTC LAB series of instruments integrate precision temperature control and low-noise laser current output. The temperature controller half is compatible with a variety of temperature sensors, including thermistors, RTDs, linear current, and linear voltage sensors. The laser driver half is compatible with all laser diode and photodiode pin configurations.

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 instrument comes with a variety of powerful safety features to protect your equipment:

  • Adjustable current limit, with Brick-Wall Never-Exceed circuitry
  • Load failure protection
  • 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. This allows you to take your application from the test bench to market quickly and efficiently.


Wavelength’s proprietary IntelliTune algorithm characterizes the TE/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 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 LDTC LAB series of instruments are designed for electro-optical, medical, spectroscopic, and defense research where low-noise laser current is needed along with precision temperature control.

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: 3.86 x 8.82 x 17.7 in (98 x 224 x 450 mm)
Supply Range: 100-240 VAC (±10%), 3.15 A, 50-60 Hz
Temperature Coefficient: 20 ppm/°C
Remote Interface: USB

Output Current: 5 A
Compliance Voltage: 10 V
Cumulative Noise (RMS): 8.5 µA
Noise Current Density: 40 nA/√Hz
Output Current Stability: 120 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)

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
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?