Amplified Photodetector (PDA)
The MOGLabs PDA030 in an amplified silicon photodetector designed for Pound-Drever Hall optical cavity locking.
It provides high bandwidth, high quantum efficiency and low noise in a convenient mechanical enclosure with standard connectors.
The 50 Ω impedance signal is provided via an isolated BNC connector that helps eliminate ground loops.
Power, for example from the MOGLabs FSC fast servo controller, is easily provided via Thorlabs-compatible M8 connector and standard industry M8 sensor cable.
Optical tubes, filters and lenses are easily mounted using the standard SM1 threaded ring.
Features
- Internal transimpedance amplifier 7.5 kV/A
- High bandwidth DC to 30 MHz (Si)
- Low noise NEP 2 pW/√Hz at 1 MHz
- Wide spectral response 300 – 1060 nm
- High quantum efficiency 0.64 at 900 nm
- Isolated BNC connector to avoid ground loops
- Standard M8 power connector ±7 to ±15 v
- SM1 (1.035”-40) internal thread optical tube mount
Specifications
Signal
| Bandwidth (fast output) | Si DC – 30 MHz (–3 dB); InGaAs DC – 20MHz (-3dB) |
| Noise equivalent power | 2 pW/√Hz at 1MHz, 3 pW/√Hz at 10MHz |
| Active area | Φ 1.2mm (1.1 mm² area) |
| Sensor | Silicon Hamamatsu S5971 (option: S5972, S5973) |
| Quantum efficiency | Peak 0.64 at 900nm; see response curve below |
| Gain | 7500 V/A |
Mechanical
| Power | ±7 to ±15 V, 100 mA, M8 connector |
| Dimensions | 43 x53 x19mm (W x H x D) body; 43x65x22 inc connectors and SM1 ring |
| Mounting | 3 x M4/8-32 tapped holes |
| Signal connector | Isolated BNC 50 Ω impedance |
| Optics mount | SM1 (1.035”-40) thread, internal |
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