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QCLAD: QCL & Actuator Driver and Temperature Controller

QCLAD: QCL & Actuator Driver and Temperature Controller

£3,300.00

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Features

  • Optimized for driving CW QCL lasers
  • Extremely low noise output to drive low current, high compliance semiconductor lasers
  • High precision temperature control
  • Real time monitoring/logging of QCL current, voltage, temperature and all signals connected to Ice Bloc
  • 1 x stepper motor and 2 x piezo motor outputs to drive diffraction gratings/reflectors for laser tuning
  • External modulation and photodiode inputs
  • Web-based interface & Ethernet connectivity

Overview

Ice Bloc QCLAD is precision current source, actuator driver and temperature controller for building QCL-based photonic systems in research, experimental and production applications. 

Driving the latest generation of low current, high compliance voltage quantum cascade lasers, the QCLAD provides market-leading ultra-low output noise performance with high precision and high resolution current set points. The integrated temperature controller can control a TEC with user-programmable output current, current polarity, voltage limits, PID control parameters and ramp time settings. Additional laser tuning options by diffraction gratings or reflectors can be driven by a variety of closed-loop stepper/piezo motors.

The QCLAD Ice Bloc has been designed with various mechanisms to protect the laser, and its compact form factor with customisable software interface allows easy integration of Ice Bloc QCLAD into experiments or OEM setups.

Specifications

QCL DRIVER  
Output current range 0 – 2 A
Output compliance voltage range 0 – 17 V
Output noise density <2n A/√Hz for frequency range 10 Hz – 1 MHz
Current setting resolution 1 mA
Current accuracy ±0.1 %
Current temperature stability ±20 ppm/°C
TEMPERATURE CONTROLLER  
Output voltage range 0 V - 16 V
Output type Bi-directional, linear Output current range 0 - 8 A
Temperature set point resolution 0.001 °K - typical value
Temperature control stability <1 mK
Set point temperature coefficient <5 ppm / °K
Temperature set point range -20.15 °C to +79.85 °C
NTC thermistor range 10 kΩ - 100 kΩ
Extended thermistor range 1 kΩ - 1 MΩ
MODULATION  
Slow modulation input  
Modulation frequency bandwidth DC – 100 Hz
Modulation sensitivity 10 m A/V
Input impedance 200 kΩ
Input resolution 24 bits
Maximum safe input ±5 V
Fast modulation input  
Modulation frequency bandwidth DC – 1.6 kHz
Modulation sensitivity 10 m A/V
Input impedance 50Ω (at high frequencies)
Maximum safe input ±2.5 V
PHOTODIODE INPUTS X 2  
Input impedance 10Ω (transimpedance)
Transimpedance gain range 200 V/A – 20kV/A
Maximum safe input ±0.6 V (protected)
Input linear range ±10 mA
Input resolution 24 bits
ANALOGUE INPUTS X 2  
Maximum safe input ±5.5 V (protected)
Input linear range ±5 V
AUXILIARY I/O  
Interlock  
Open circuit voltage 3.3 V
Closed maximum resistance 5.6 kΩ
Emission LED  
Output voltage +5.5 V
Current limiting resistance 360 Ω
2 PIEZO MOTOR DRIVERS  
Output voltage range 0 – 50 V
Current-set range (dV/dt:) 0 – 20 mA
Maximum drive frequency up to 20 kHz
TWO-PHASE STEPPER MOTOR  
Max output power per phase 2 W
Output voltage range 0 – 5 V
Output current range 0 – 500 mA
Maximum stepping frequency up to 2 kHz
POSITION SENSORS  
Stepper reference switch  
Open circuit voltage 5 V
Closed maximum resistance 9 kΩ
Piezo motor quadrature encoded position switch x 2
Maximum input voltage +5 V (protected
GENERAL  
Mains input voltage 100-240 V
AC 50/60 Hz
350 VA (typical power:15 W) Size (W x H x D) Half rack (203 mm) x 2U (89 mm) 345 mm (8” x 3.5” x 13.6”) Weight 4.1 kg
Operating temperature 0 °C to 70 °C
Storage temperature -20 °C to 85 °C
Relative humidity <90 % humidity, non-condensing
Indoor/outdoor use Indoor use only  
Altitude <2000 m