Datasheet

PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeThe picture shows model PWPR-2K-IN-FS.
Features

InGaAs-PIN detector, 0.5 mm active diameter
Spectral range 900 - 1700 nm
Ultra-low noise, NEP 10 fW/√√Hz
Bandwidth DC to 2 kHz
910
Transimpedance gain switchable 1.0 x 10 V/A, 1.0 x 10 V/AFree-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
UNC 8-32 and M4 tapped holes for mounting on standard posts with metric andimperial thread

Applications

Spectroscopy, reflection and transmission measurements
Highly sensitive optoelectronic measurements
Applications utilizing optical chopper modulation
Optical front-end for oscilloscopes, A/D converters and lock-in amplifiersSpectral Response

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DE-PWPR-2K-IN_R1/KJ,TH,JM/11OCT2017

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Datasheet

PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeAvailable Versions

PWPR-2K-IN-FST

1.035"-40 threaded flange for free space applications,compatible with many optical standard accessories andfor use with various types of fiber connector adapters
Optionally available:
Fiber adapters PRA-FC and PRA-FSMA(Coupling efficiency will depend on fiber type.
With the relative large 0.5 mm dia. photodiode installed in
the PWPR-2K-IN input coupling is not critical. However,standard SM 9/125 fibers (PC or APC) with low numericalaperture (NA) are recommended for ensuring near 100%
coupling efficiency.)

Available Accessories

PWPR-2K-IN-FS

25 mm dia. unthreaded flange for free space applications,compatible with many optical standard accessories.

PWPR-S

Customized versions available on request

PRA-FSMA
PRA-FC

Fiber-adapter with external
1.035"-40 thread

PRA-PAP

Alternative mounting option:
Post adapter plate, easy to mounton FEMTO photoreceiver series OE,
FWPR, PWPR, HCA-S and LCA-S

PS-15-25-L

Power supply
Input: 100 - 240 VAC
Output: ±15 VDC

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PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeSpecifications

Gain

Test conditions

VS = ±15 V, TA = 25 °C, output load impedance 1 MΩ,
warm-up 20 minutes (min. 10 minutes recommended)

Transimpedance gain

1.0 x 10 V/A, 1.0 x 10 V/A (switchable)(@ output load ≥ 100 kΩ)±1 % (electrical)
910
1.1 x 10 V/W, 1.1 x 10 V/W typ. (switchable)(@ 1580 nm, output load ≥ 100 kΩ)

Gain accuracy
Conversion gain

910Frequency Response

Lower cut-off frequency
Upper cut-off frequency (–3 dB)
Rise/fall time (10 % - 90 %)DC2 kHz165 µs

DetectorDetector type
Active area
Spectral rangeMax. sensitivity

InGaAs-PIN photodiode∅ 0.5 mm
900 - 1700 nm
1.1 A/W @ 1580 nm typ.

Input

Input offset current (dark current) 0.6 pA typ.
Input offset current drift
factor 2 / 10 °C
Input offset compensation range ±120 pA (adjustable by offset potentiometer)
9Optical saturation power
9.1 nW (@ 10 V/A, 1580 nm)
100.91 nW (@ 10 V/A, 1580 nm)
NEP
10 fW/√Hz (@ 1580 nm, 100 Hz)

OutputOutput voltage range
Max. output current
Output impedance
Output noise–1.2 V … +10 V (@ ≥100 kΩ output load)
30 mA (short-circuit proof)
50 Ω (terminate with ≥100 kΩ)
90.75 mVRMS (5 mVPP) typ. @ 10 V/A, no signal on detector

Power Supply

Supply voltage
Supply current±15 V (±14.5 ... 16.5 V)+32 mA / –25 mA(depends on operating conditions, recommended power
supply capability minimum ±100 mA)

Case

WeightMaterial

207 g (0.46 lbs) PWPR-2K-IN-FS
220 g (0.49 lbs) PWPR-2K-IN-FST incl. coupler ring
AlMg4.5Mn, nickel-plated

Temperature Range

Storage temperature
Operating temperature–30 °C ... +85 °C
0 °C ... +50 °C

Absolute Maximum Ratings

Optical input power (CW)Power supply voltage

10 mW
±20 V

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Datasheet

PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeTypical Performance
Characteristics

Frequency Response

Output Noise

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Datasheet

PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeTypical Performance
Characteristics (continued)

Step Signal Response @ 2500 pW (p-p, 1550 nm)

acquisition without averaging

acquisition with 64x averaging

Step Signal Response @ 100 pW (p-p, 1550 nm)

acquisition without averaging

acquisition with 64x averaging

Step Signal Response @ 10 pW (p-p, 1550 nm)

acquisition without averaging

acquisition with 64x averaging

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Datasheet

PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN Photodiode

Connectors

Input

PWPR-2K-IN-FS

25 mm dia. unthreaded flange forfree space applications

PWPR-2K-IN-FST1.035"-40 threaded flange forfree space applications and foruse with fiber connector adapters
PRA-FC and PRA-FSMA

fixed fiber optic input available as customized unit
Output

BNC jack (female)Power supply

Lemo series 1S, 3-pin fixed socket(mating plug type: FFA.1S.303.CLAC52)®

Pin 1:Pin 2:Pin 3:

Scope of Delivery+15 V– 15 V
GND®

PWPR-2K-IN, internally threaded coupler ring (“FST” version only), Lemo 3-pin connector,datasheet, transport package

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PWPR-2K-IN
Ultra-Low Noise 2 kHz Photoreceiverwith InGaAs-PIN PhotodiodeDimensions

PWPR-2K-IN-FS (25 mm dia. unthreaded free space input)
8474
4.71515A/W
1.0
Ø 0.5 mm
InGaAs-PIN

0.8
0.6
0.4

4451

0.2

DC - 2 kHz

0800

1000

1200

1400

1600

nm

15GainØ 3.2
2.1 mm distance to active area

15

15.9

28.5

12.5

29.5

all measures in mm unless otherwise noted

DZ-PWPR-2K-IN-FS_R0

PWPR-2K-IN-FST (1.035"-40 threaded free space input)
8474
4.8

1515A/W
1.0Ø 0.5 mmInGaAs-PIN

0.80.60.4

44510.2

DC - 2 kHz

0800

1000

1200

1400

1600

nm15GainØ 3.2
removable
coupler ringwith internalthread

2.2 mm distance to active area

1515.928.5

1529.5all measures in mm unless otherwise noted

FEMTO Messtechnik GmbHKlosterstr. 6410179 Berlin · Germany
Phone: +49 30 280 4711-0
Fax: +49 30 280 4711-11
Email: info@femto.de
www.femto.de

DZ-PWPR-2K-IN-FST_R0

Specifications are subject to change without notice. Information provided herein is believed to be accurate andreliable. However, no responsibility is assumed by FEMTO Messtechnik GmbH for its use, nor for any infringementof patents or other rights of third parties which may result from its use. No license is granted by implication orotherwise under any patent or patent rights of FEMTO Messtechnik GmbH. Product names mentioned may also betrademarks used here for identification purposes only.
© by FEMTO Messtechnik GmbH · Printed in Germany

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