PhotoDetector Assemblies
Variety of detector assemblies to fit an array of application needs
Spectral responsivity curve for Labsphere’s detector assemblies

Silicon detector assembly: SDA-050-U-RTA-CX
The silicon detector assembly is a UV-enhanced photovoltaic
detector designed to monitor radiation in an integrating
sphere. The unfiltered detector assembly has a broad spectral
response from 190 to 1100 nm. Low dark current and highsensitivity and reliability enable it to be used in a wide varietyof optical measurements.

Photopic detector assembly: SDA-050-P-RTA-CX
The photopic detector assembly is filtered to closely matchthe CIE photopic observer in the visible region (380 - 780 nm).
When integrated with Labsphere’s spheres and systems it
can provide highly accurate photometric measurements due
to low dark current, high linearity and high stability.

Germanium detector assembly: GDA-050-U-RTA-CX
The germanium detector assembly monitors radiation in an
integrating sphere. The high-quality photodiode is designed
for the 800 to 1800 nm wavelength range. The detector has
high responsivity, good linearity, fast response times, andexcellent long-term stability.

Compatible and flexible
All of Labsphere’s detector assemblies are compatible with Labsphere’s
modular integrating spheres, and designed to provide greater configuration
flexibility. All detectors are contained in a housing that fits on a 0.5-inch
diameter integrating sphere port frame or port adaptor. Each detector
assembly includes a BNC connector and 10 ft coaxial cable.
Labsphere offers five different types of non-cooled detector assemblies that areused in a variety of applications. All detector assemblies are compatible with
Labsphere’s SC 6000 Radiometer/Photometer.

FEATURES:

Applications:

Easy to mount on a standard 0.5-inch integrating
sphere port frame.

Measure UV, visible & infrared
radiation; reflectance,transmittance and absorption

Wide wavelength range selection based on specificapplication.
When connected to a radiometer (SC 6000), andwith appropriate calibration, can monitor the radiant/luminous flux, irradiance/ illuminance or luminance/radiance

Laser power detection
Radiometry and photometry

INDIUM GALIUM ARSENIDE detector assembly: IDA-050-U-RTA-CXThe InGaAs detector assembly monitors radiation in anintegrating sphere, and is spectrally sensitive from 1000
to 1700 nm. Due to state-of-the-art sensitivity and highresponsivity, the detectors are ideal for optical power
measurement applications.

Extended range InGaAs detector assembly: IDA-EXT-050-RTA-CX
The extended range InGaAs detector assembly is designed
for greater flexibility and wider application range. The highquality photodiode embedded in the detector assembly isdesigned for the 800 to 2600 nm wavelength range. Thedetector provides fast rise time, uniformity of response,
excellent sensitivity, and long-term reliability for a wide range
of applications.

Low-level radiation
Luminance and radiancemonitoring

Labsphere, Inc. • 231 Shaker St. • North Sutton, NH 03260 • USA • Tel: +1 (603) 927-4266 • www.labsphere.com

Specifications
Model Number
SDA-050-U-RTA-CX
SDA-050-P-RTA-CX
IDA-050-U-RTA-CXIDA-EXT-050-RTA-CX
GDA-050-U-RTA-CX

Part Number
AS-02522-400
AS-02522-401
AS-02522-402
AS-02522-403
AS-02522-404

Description
Silicon detector assemblyFiltered silicon detector assembly with photopic response
InGaAs detector assembly
Extended range InGaAs detector assembly
Germanium detector assembly

Properties and Performance
Detector/ModelActive area
Spectral range
Peak responsivity
f1’Connector
Compatible withCable included
Mounts on

SDA-050-U-RTA-CX
4.5 mm2190-1100 nm@ 950 nm: 0.5 A/W
NABNC
SC 6000
10 ft coaxial cable½” port frame

SDA-050-P-RTA-CX
4.5 mm2visible
Peaks @550 nm
4%BNC
SC 6000
10 ft coaxial cable½” port frame

IDA-050-U-RTA-CXIDA-EXT-050-RTA-CX GDA-050-U-RTA-CX
7 mm2
3.14 mm2
19.6 mm2
1000-1700 nm
800-2600 nm
800-1800 nm@ 1300 nm: 0.9 A/W @ 2200 nm: 1.2 A/W @ 1550 nm: 0.9 A/W
NANANABNC
BNCBNCSC 6000
SC 6000
SC 6000
10 ft coaxial cable
10 ft coaxial cable
10 ft coaxial cable½” port frame½” port frame½” port frame

Optional Accessories
SC 6000
GPS Spheres
PFR-XXX-050

Programmable radiometer/photometer
Labsphere’s general purpose integrating spheres
Port frame reducers to achieve ½” diameter port

AS-02702-000-Labsphere, Inc. • 231 Shaker St. • North Sutton, NH 03260 • USA • Tel: +1 (603) 927-4266 • www.labsphere.com
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