PWPR-2K PICOWATT PHOTORECEIVER SERIES-Features

1. Ultra-low noise, NEP ≤ 10 fW/√Hz

2. Si and InGaAs models cover the wavelength range from 320 to 1700 nm

3. Bandwidth DC to 2 kHz

4. Transimpedance gain switchable 10⁹ V/A, 10¹⁰ V/A

5. Free-space input 1.035″-40 threaded, alternatively 25 mm diameter unthreaded

6. Easily convertible to fiber optic input (FC and FSMA) with optionally available screw-on adapters

In addition to precise and fast cw-measurements the relatively large bandwidth from DC to 2 kHz also allows time-resolved and modulated measurements. Particularly the combination with lock-in amplifiers results in ultra-sensitive measurement systems being almost immune to disturbances from external sources. In this way the PWPR-2K can easily detect optical powers from about 100 fW up to 10 nW.

The PWPR-2K photoreceivers are factory equipped with an optical free-space input. There is the choice between a 1.035″-40 threaded flange (FST) and a 25 mm unthreaded flange (FS). Both types offer a broad compatibility with optical standard accessories like tubes, lenses, cage systems and optical adapters from various manufacturers. The threaded free-space input (FST) e.g. can be easily converted to an optical fiber input by screwing the optionally available fiber adapters (PRA-FC and PRA-FSMA) on it.

The relatively large-area detector facilitates optical focusing in free-space applications and ensures a high and stable degree of coupling when using the optionally available fiber optic adapter.

All PWPR-2K photoreceivers feature both UNC 8-32 and M4 tapped holes for mounting on metric and imperial threaded standard posts. The optionally available adapter plate PRA-PAP opens up further mounting options.

Output voltage range up to +10 V. Offset adjustable by potentiometer. Output short-circuit protected. Power supply ±15 V via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet or contact FEMTO.