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PWPR-2K PICOWATT PHOTORECEIVER SERIES

Updated:2022-12-07

Brand: FEMTO
Model: PWPR-2K
Description: The PWPR-2K optical receiver is equipped with an optical free space input at the factory. 1.035 ″ - 40 threaded flange (FST) and 25 mm unthreaded flange (FS) can be selected. Both types provide wide c
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Product Details

PWPR-2K PICOWATT PHOTORECEIVER SERIES-Features

Ultra-low noise, NEP ≤ 10 fW/√Hz
Si and InGaAs models cover the wavelength range from 320 to 1700 nm
Bandwidth DC to 2 kHz
Transimpedance gain switchable 10⁹ V/A, 10¹⁰ V/A
Free-space input 1.035″-40 threaded, alternatively 25 mm diameter unthreaded
Easily convertible to fiber optic input (FC and FSMA) with optionally available screw-on adapters

MEASURING SMALLEST OPTICAL SIGNALS FROM DC TO 2 KHZ

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.

COMPATIBILITY WITH OPTICAL BENCH (FREE SPACE) AND FIBER OPTICS

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.

APPLICATIONS

Spectroscopy, reflection and transmission measurements
Time resolved optical pulse and power measurements
Characterization of light sources
Highly sensitive applications using chopper modulation
Optical front-end for oscilloscopes, A/D converters and lock-in amplifiers

Models	PWPR-2K-SI-FST PWPR-2K-SI-FS	PWPR-2K-IN-FST PWPR-2K-IN-FS
Photodiode	1.2 mm Ø Si-PIN	0.5 mm Ø InGaAs-PIN
Spectral Range	320 - 1060 nm	900 – 1700 nm
Bandwidth (−3 dB)	DC - 2 kHz	DC - 2 kHz
Rise/Fall Time (10 % - 90 %)	165 µs	165 µs
Transimpedance Gain (switchable)	1 x 10⁹V/A 1 × 10¹⁰V/A	1 x 10⁹V/A 1 × 10¹⁰V/A
Max. Conversion Gain	0.64 x 10⁹ V/W (@ 900 nm, gain 10⁹ V/A) 0.64 x 10¹⁰ V/W (@ 900 nm, gain 10¹⁰V/A)	1.1 x 10⁹ V/W (@ 1580 nm, gain 10⁹ V/A) 1.1 x 10¹⁰ V/W (@ 1580 nm, gain 10¹⁰ V/A
NEP (@ 100 Hz)	9 fW/√Hz(@ 900 nm)	10 fW/√Hz(@ 1580 nm)
Datasheet	628KB	649KB

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.

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