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 detectors make optical alignment easy in free-space applications and ensure a very high and stable coupling efficiency when using the optionally available fiber optic adapters PRA-FC and PRA-FSMA.
All PWPR-2K photoreceivers feature both UNC 8-32 and M4 tapped holes for mounting on metric and imperial threaded standard posts.
PWPR-2K input options
Mounted in vertical position
using the integrated tapped holes
Mounted in horizontal position
using the optionally available post adapter plate
(PRA-FC, PRA-PAP and post-/holder not included in the scope of delivery)
|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 109 V/A
1 x 1010 V/A
|1 x 109 V/A
1 x 1010 V/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 1010 V/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)
(@ 1580 nm)
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 EOC.