ICE-CS1 Current Controller and Peak Lock Servo

ICE-CS1 Current source and peak lock servo board for ICE system laser control

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Features:

  • 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.

General Specifications      
  ICE-CS1-200 ICE-CS1-500 Units
Current Source    
Current Range 200 500 mA
Current Noise Density 100 200 pA/√ Hz
RMS Noise (10 Hz to 100 kHz) <50 <100 nA
RMS Noise (10 Hz to 1 MHz) <100 <150 nA
RMS Noise (10 Hz to 10 MHz) <300 <500 nA
Absolute Accuracy <2 <2 %
Temperature Coefficient <1 <5 µA/°C
Frequency Servo      
Error Input Range ±1 V
Input Voltage Noise <5   nV/√ Hz
Loop Bandwidth1 >3   MHz
ωI (Integral/Proportional Zero) 3, 10, 30, 100, 300   kHz
ωD (Proportional/Differential Zero) Fixed at 3x ωI or off    
Proportional Gain -20 to +22   dB
Gain Resolution 2   dB
All specifications subject to change.
1Limited by 4 MHz peak-lock dither.