Precision Electro-Optic and Laser Technologies

SLICE-QT Precision Four-Channel PID Temperature Controller

Contact Vescent


  • Four independent channels
  • Configurable PID loop filters
  • Sub-millikelvin stability
  • Touch screen control
  • Host GUI & API
  • 35 W of user-assignable control power
  • TEC or resistive heaters
  • External control of set point
  • Interlock other devices based on temperature control fidelity


  • Diode & quantum cascade laser
  • Semiconductor amplifiers & tapered amplifiers
  • Photonic integrated circuits (PICs)
  • Nonlinear & photonic crystals
  • Optical cavities, gas cells, and interferometers

Stability of the temperature of an active D2-100 laser

The SLICE-QT features four independent precision temperature control channels for TECs or heaters for temperature stabilization and control of lasers, semiconductor optical amplifiers, tapered amplifiers, optical cavities, PICs, and non-linear crystals.  The loops can be nested or control four separate systems.  With widely adjustable PID corners and gain, it is possible to stabilize the temperature of your plant with sub-millikelvin temperature stability.

Features like slew rate control and an output trigger allow you to trust your delicate photonic devices such as doubling crystals to the SLICE-QT.  You can set a maximum rate of temperature change and have confidence it won’t be exceeded. Safeguard your laser diodes by automatically shutting down the current if the the temperature goes out of range.  Easily tune the PID loop using the loop performance monitoring system.

The Vescent Photonics SLICEs of precision photonics control. Individually or working together, SLICE provides the performance you need on your benchtop, laser table, or in a rack.

Performance video:

ControlTouch screen
Host GUI
Control Range-10 to +100°C
Capacity235 W
Sensor Type10 kΩ thermistor
Compatible PlantsTECs, Resistive Heaters
Stability3±0.2 mK over 10 minutes
Set Point Resolution~0.001°C
Power Input100-240 VAC, 50-60 Hz
Slew Rate ControlYes
1All specifications subject to change without notice.
3 Plant-dependent. Specified for the D2-100 Laser.

Downloads, Manuals, & Firmware:

Firmware download ftp site (System Controller 1.22 and QT 1.36 available.  Upgrade now for improved stability and expanded feature set.)

Related Information: