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The spectral responsivity range of the model RW-3704 covers the NIR range from 800 nm to 1000 nm.

General Purpose Light Measurement Detector

The RW-37 series of radiometric detectors are primarily used for spectral broadband irradiance measurements within a defined spectral range of polychromatic radiation. Optical filters are used to shape the bare photodiode response to the desired spectral bandpass. The computer aided optical filter design produces the best possible broadband radiometric response within the spectral sector specified.

Cosine Field-of-View

A cosine F.O.V. characteristic of the detectors spatial responsivity is effected by the diffusor window of RW-37 detectors.

Designed for Wide Dynamic

The RW-37 detectors are designed for the highest possible irradiance sensitivity for low irradiance level applications. Hwever the wide range linearity of the photodiodes coupled with the Gigahertz-Optik optometers’s wide dynamic signal range amplifiers enable the RW-37 series detectors to be used in applications with high irradiances as well. The upper range is limited only by the detector maximum operating current and its specified operation temperature. 

Compact Housing

The RW-37 series irradiance detectors are built in a compact 37mm diameter black anodized aluminum housing. The shadow ring around the diffusor support the wide-angle cosine response. A side M6 tapped mounting hole allows the detector be fixed in place. The 37-type standard housing allows other SRT-M37 type accessories to be attached using the SRT-M45/37-B adapter for radiance or intensity measurements. 

Traceable Calibrations 

Calibration of irradiance in W/m² and/or W/cm² as well as the detector's relative spectral responsivity is performed at Gigahertz-Optik’s Calibration Laboratory. Besides the regular calibration with spectral broadband reference lamps alternative calibrations with monochromatic or custom type reference lamps can be supplied as an option. The calibration and its traceability are confirmed in the calibration certificate supplied with each detector.

Typical Spectral Responsivity
Calibration

Calibration of the spectral irradiance sensitivity in A/(W/m²) and A/(W/cm²) of an UV-3701 detector. Calibration of the relative spectral sensitivity from 800 nm to 1000 nm in 10 nm steps absolutely scaled with sampling point at 950 nm. Calibration certificate.

Specification
spectral responsivity

radiometric (800 - 1000) nm

typical responsivity

40 nA/(W/m²)

Max. signal current 1 mA
Input optics 11 mm Ø diffusor window
Input optics Cosine F.O.V.
Housing 37 mm Ø, 32 mm height
Mounting side M6 thread hole
Connector coaxial cable 2 m Long, with BNC (-1), calibration data (-2) or ITT (-4) connector
temperature range

(5 - 40) °C

min. signal current

depends on optometer

Type Description File-Type Download
Datasheet RW-3704 PDF
Produktname Product Image Description Show product
P-9710 High-quality device for measurement of CW-, single pulse and modulated radiation.

Features: Optometer for all detector heads with calibration data plug. Measurement modes: CW, pulse energy, dose, peak-to-peak, effective luminous intensity (Blondel-Rey), data logger, battery, main power, RS232
X1 Four-channel USB optometer designed for mobile use.

Features: Compact device for use with all photometric, radiometric, colorimetric, plant-physiologic and photo-biologic measurement heads from Gigahertz-Optik. USB interface. Battery operation or power supply USB.
X1-RM Optometer in 3HE housing for use in 19” racks.

Features: Its USB and RS232 remote interface and two additional RS232 device interfaces make the device highly flexible when it comes to system integration. Its four signal inputs enable use with all photometric, radiometric, colorimetric, plant-physiologic and photo-biologic measurement heads from Gigahertz-Optik.
X1-PCB Optometer module.

Feature: The X1 optometer is available as a printed circuit board either with or without a housing and is suited for applications that do not require a keyboard or display. Four signal inputs enable connection with all measuring heads from Gigahertz-Optik.
P-2000 Two-channel optometer.

Features: For use with most photometric and radiometric detectors supplied by Gigahertz-Optik. Modes: CW, pulse energy from both single and multiple flashes, effective luminous intensity (Blondel-Rey), data logger and others.
P-9801 Eight-channel optometer.

Features: State-of-the-art 8 channel laboratory optometer with a signal amplifier and sample & hold ADC per channel for clocked recording of the measurement signals. RS232 and IEEE488 interface. Trigger input and output.
P-9802 Light meter for laboratory use with up to 36 measurement heads.

Features: For use with up to 36 photometric and/or radiometric measurement heads. RS232 interface.
TR-9600 High-speed 1µs or 100ns rise time data logger optometer.

Features: Laboratory device for recording of clocked intensity progress readings in single light flashes, flash sequence or modulated light. Calculation of pulse data e.g. peak intensity, pulse length, pulse half width , pulse energy and pulse repeat rate, etc.
P-9202-4 Fast response time trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion. Minimal diode offset voltage for short circuit operations. Bandwidths of up to 330kHZ. 1µs rise time. Large I-U amplification range from 10pA/V to 1mA/V.
P-9202-5 Universal trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion. Minimal diode offset voltage (1mV) for short circuit photodiode operations. 5µs to 20ms rise time depending on the amplification. Large I-U amplification range – 1×10-10A/V to 1×10-3 A/V.
P-9202-6 Highly sensitive trans-impedance signal amplifier.

Features: High quality analogue amplifier with current-voltage conversion with minimal diode offset voltage (0.5mV) for short circuit photodiode operation of . 2.5s to 25s rise time depending on the amplification. Large I-U amplification range – 1×10-11A/V to 1×10-4 mA/V.
Article-Nr Modell Description Request / Compare
Product
15296518 RW-3704-1

Detector head with -1 connector, calibration certificate.

15297079 RW-3704-2

Detector head with -2 connector, calibration certificate.

15297080 RW-3704-4

Detector head with -4 connector, calibration certificate.

Calibration
15300577 K-FOV Calibration of the F.O.V
15307521 K-RW3704-SD

Calibration of the spectral irradiance sensitivity in A/(W/m²) and A/(W/cm²) of an RW-3704 detector. Calibration of the relative spectral sensitivity from 800 nm to 1000 nm in 10 nm steps absolutely scaled with sampling point at 950 nm. Calibration certificate.

Re-calibration
15300158 K-RW3704-I

Integral irradiance sensitive calibration in A/(W/m²) and A/(W/cm²) of the RW-3704 light detector. Calibration certificate.

15300580 K-Si-SR

Re-calibration of the relative spectral responsivity.

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