Precision Electro-Optic and Laser Technologies

ICE-CS1 Current Control and Frequency Servo Board

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ICE-CS1 current source & servo

ICE-CS1 front panel


ICE-CS1 Current Source and Frequency Servo


  • Libbrecht-Hall current source
  • Lowest current noise available
  • PID peak lock servo
  • 3 MHz bandwidth
  • Internal ramp
ICE (Integrated Control Electronics) is a compact suite of digitally controlled electronics that will precisely drive and stabilize our D2-100 DBR lasers and an associated array of photonics tools. It will simplify your experimental design and reduce SWaP while still providing the same high performance we offer in our D2 modular units.

The ICE-CS1 is a board-level current driver and a frequency servo integrated onto the same PCB. Tight integration improves the performance of both components that are needed to drive and stabilize a precision diode laser.

We have used the Libbrecht-Hall1 current driver design once again because it continues to be the lowest noise current source available on the market.

The servo features a full 3 MHz of bandwidth – limited only by the 4 MHz peak lock dither.  It will provide a tight peak lock to an error signal without the use of an external modulation source and lock in amplifier.

The ICE system is under your control via serial commands or the ICE GUI.  A PC-compatible computer (not included in purchase) is necessary for this control.

ICE System DiagramYou can view a typical two-laser system configuration controlled by ICE at this link.   And a four-laser system can be viewed at this link.full-monty_grad_lr
Compare D2 products to ICE products.

General Specifications   
Current Source
Current Range200500mA
Current Noise Density100200pA/√ Hz
RMS Noise (10 Hz to 100 kHz)<50<100nA
RMS Noise (10 Hz to 1 MHz)<100<150nA
RMS Noise (10 Hz to 10 MHz)<300<500nA
Absolute Accuracy<2<2%
Temperature Coefficient<1<5µA/°C
Frequency Servo
Error Input Range±1V
Input Voltage Noise<5nV/√ Hz
Loop Bandwidth1>3MHz
ωI (Integral/Proportional Zero)3, 10, 30, 100, 300kHz
ωD (Proportional/Differential Zero)Fixed at 3x ωI or off
Proportional Gain-20 to +22dB
Gain Resolution2dB
All specifications subject to change.
1Limited by 4 MHz peak-lock dither.

ICE Boards & Accessories
ICE-BoxICE board housing and GUI connectors
ICE-QT1Four temperature control loops
ICE-CS1Current control and peak lock servo
ICE-CP1Current control and offset lock servo
ICE-PB1Power bus for D2-210 Spectroscopy Module and/or D2-160 Beat Note Detector
ICE-PS2Linear power supply
ICE-MC11Interface with user; receive and parse commands
ICE-SU11Virtual USB port, convenient I/O
All specs subject to change without notice.
1Included in ICE-Box. Only required individually in board-level implementation.