Precision Electro-Optic and Laser Technologies

ICE-CP1 Current Control and Offset Phase Lock

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ICE-CP1 current driver & offset servo

ICE-CP1 front-panel access


ICE-CP1 Current Source and Phase Lock Servo


  • Libbrecht-Hall current source
  • Lowest current noise available
  • Offset Phase Locks with 250 MHz ≤ Δν ≤ 9.3 GHz
  • Stabilized internal reference or external input offset reference
  • Programmable jumps and scans of slave laser, including feed forward for rapid changes of frequency
  • Electrical beat note input
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-CP1 is a laser control current driver and an offset phase lock servo integrated onto the same PCB. Tight integration improves the performance of both components that are needed to drive and slave 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 use of a Phase Frequency Detector (PFD) creates a true phase lock with high coherence between the master & slave laser, yet offers the conveniently large capture range of a frequency lock. The servo loop has control over a bandwidth of DC to >1.5 MHz and features its own programmable ramp generator.

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
ICE-CP1-200 ICE-CP1-500 Units
Current Source
Current Range 200 500 mA
Current Setpoint Resolution 1 2 mA
Current Noise Density <100 <200 pA/√ Hz
RMS Noise (10 Hz – 100 kHz) <50 <100 nA
RMS Noise (10 Hz – 1 MHz) <100 <150 nA
RMS Noise (10 Hz – 10 MHz) < 300 < 500 nA
Absolute Accuracy 2 2 %
Temperature Coefficient <1 <5 μA/°C
Offset Lock Servo
Input Impedance 50 Ω
Input Signal -10 to +10 dBm
Output Voltage ±10 V
Loop Bandwidth of Servo1 >8 MHz
Closed Loop Bandwidth2 >1.5 MHz
ωI (Integral/Prop. zero) 3, 10, 30, 100, 300 kHz
ωD (Proportional/Diff. zero) 10, 30, 100, 300 kHz, off
User-Adjustable Gain 0 to -72 dB
Gain Resolution 2 dB
Internal VCO Stability 20 ppm
Electronic Input/Output Impedance 50 Ω
Electrical Input Connector SMA
Electrical Input Range -10 to +10 dBm

1Bandwidth of servo electronics
2Bandwidth of a closed loop including laser controller, laser, detector, and servo

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.