
All-Digital Servo Module
Design Tools
All-Digital Servo Module Precilasers has launched an all-digital servo module for laser frequency locking. This controller internally integrates a modulation-demodulation module and a PID module, which completes the full process from frequency sweeping, error signal generation to laser frequency locking. It also supports the display of relevant signal waveforms and can provide locking control for various common frequency stabilization technologies, such as absorption spectroscopy, saturated absorption spectroscopy, modulation spectroscopy, modulation transfer spectroscopy, and PDH technology.
Features
- High Bandwidth Low Noise
- All
- Digital Control Automatic Locking
- Automatic Relocking
Applications
- Laser Frequency Stabilization Precision
- Measurement
| Models | Specification |
|---|---|
| Modulation Signal Power | 0~16dBm |
| Modulation Signal Frequency | 2.5kHz ~ 20MHz |
| Modulation Signal Resolution | 2.5kHz |
| Phase Range | 0-360° |
| Input Signal Range | <200mVpp |
| Input Signal Coupling Mode | AC Coupling |
| Input Signal Impedance | 50Ω |
| PID Stages | 2 Stages |
| PID-P Gain | <60dB |
| Fast PID-I Corner Frequency | <10MHz |
| Fast PID-D Corner Frequency | [1kHz, 30MHz] |
| Fast PID Output Signal Circuit Bandwidth | 5MHz |
| Fast PID Output Signal Range | -1.6V~1.6V |
| Fast PID Circuit Delay | 160ns |
| Fast PID Output Impedance | 50Ω |
| Slow PID-I Corner Frequency | <500kHz |
| Slow PID-D Corner Frequency | [0.1kHz, 500kHz] |
| Slow PID Output Circuit Bandwidth | 500kHz |
| Slow PID Output Signal Range | -5V~5V |
| Slow PID Circuit Delay | 1us |
| Locking at Designated Lock Point | Supported |
| Locking at Designated Error Threshold | Supported |
| Automatic Relocking | Supported |
| Automatic Relocking Time | <50ms |
| Power Supply | 12V, >2A |
Source: Precilasers manufacturer datasheet. Download the brochure (PDF) from the Documents tab for full details.
Product Family: Control Electronics & Modules (7 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| Single Module Frequency Doubled 780nm Laser |
| — | — | — | Contact |
| Single module 532nm laser |
| — | — | — | Contact |
| High performance fiber splitter |
| — | — | — | Contact |
| Photonic crystal fiber |
| — | — | — | Contact |
| PDH frequency locking module |
| — | — | — | Contact |
| Beat frequency phase lock module |
| — | — | — | Contact |
| All-Digital Servo Module Current |
| — | — | — |




