Mini Laser Controller (mLC)
The MOGLabs mini Laser Controller uses the latest high-density electronic components to provide fully digital control of ECDL or DFB/DBR lasers in an ultra-miniature form factor. The board includes a temperature controller and current source with low noise, high current and high compliance voltage. It includes a high voltage piezo driver, a high bandwidth analogue to digital signal input, and two analogue inputs for direct modulation of both piezo and current for external locking to an atomic transition, wavemeter or high finesse optical cavity. Electrical power is through a USB-C connection, compatible with most power delivery adapters. It can be operated from a host computer via USB or LAN either with the Windows app provided, or user code using simple text-based commands.
The mLC is designed for applications in quantum computing, quantum sensing, time and frequency standards, gas sensing, and spectroscopy.
Features
- Ultra miniature package
- - Oscilloscope functionality built-in
- - Ultra-low noise current source
- - Temperature controller
- - High voltage piezo driver
- - Sweep ramp generator
- - TCP/IP, USB 2.0 (via USB-C port)
- - LabVIEW, MATLAB and python drivers
Specifications
Current
| Output current | 0 to 1024mA ±15uA setpoint; 200mA optional |
|---|---|
| Noise* | 1.4nA/√Hz @ 1 kHz, 880nA(rms) 1 Hz – 1 MHz |
| Stability and accuracy | ± 0.2ppm/°C and 0.1% from setpoint |
| Compliance voltage | 8 V at 500mA, 7.5 V at 1024mA |
| Current modulation | ±25mA sweep, ±1mA analogue IN |
| Current modulation bandwidth | Direct analogue mode: 12 MHz (–3dB) |
Temperature
| Range | 7.5 – 70°C ±0.01°C resolution |
|---|---|
| Stability | Better than ±10mK |
| TEC power | ±3A, ±4.5V (13.5W) |
| Sensor | NTC 10kΩ |
| Control | PID with variable sample rate, bandwidth 20 Hz |
| Protection | TEC over current, open/short circuit |
Piezo
| Piezo output | 0 – 180V, 15mA (charge and discharge) |
|---|---|
| Piezo Sweep/Control DAC | Direct analogue, and 16-bit digital |
| Resolution | 2.7mV resolution at maximum range |
| Noise* | 790nV/√Hz @ 1kHz |
| Sweep | Internal 1 Hz to 50 Hz |
| Bandwidth | Internal 16 kHz; external 100 kHz |
| Protection | PCB over temperature |
Signal Input / Output
| Signal input | 2 SMA connectors |
|---|---|
| Analogue inputs (2) | Signal range ±4:096 V protected to ±12 V Photodetector AC/DC: 3.1MHz > 110 dB dynamic range Piezo mod: analogue direct to piezo Current mod: analogue direct to diode current |
Front Panel User Interface
| Interlock & Key | 3.5mm headphone jack 3-pin connector |
|---|---|
| Communications | TP 10/100 ethernet (RJ-45); USB-C |
Connectivity
| Laser/piezo/TEC | 14-pin butterfly PCB footprint 5 MOLEX Pico-EzMate connectors 1 Hirose BK13 32-pin connector |
|---|
Power and Dimensions
| Input | USB-C Power Delivery adapter |
|---|---|
| Power | 4W standby, 30W peak |
| Dimensions | WxLxH = 56 × 67 × 17.6mm (board) WxLxH = 87 × 120 × 34mm (chassis) |
| Operating Temperature | 10 - 35°C |
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