Click here for the datasheet

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

Click here for the datasheet

QCLAD: QCL & Actuator Driver and Temperature Controller Datasheet

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 – 2.5 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 – 50 Hz
Modulation sensitivity	10 m A/V
Input impedance	200 kΩ
Maximum safe input	±5 V
Fast modulation input
Modulation frequency bandwidth	1.6 kHz – 3 MHz
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

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

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

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

POSITION SENSORS
Stepper reference switch
Open circuit voltage	5 V
Closed maximum resistance	9 kΩ
Piezo motor quadrature encoded position switch x2
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	Indoor use only
Altitude	<2000 m