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Phone: +49 (0)8193-93700-0
info@gigahertz-optik.de

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Phone: +1-978-462-1818
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Detectors

A detector head comprises one or more photodiodes each with an appropriate optical bandpass filter, diffuser, lens assembly, integrating sphere or other optical elements. Detector heads are calibrated in the Gigahertz Optik GmbH's calibration laboratory.

This modular range of broadband light meters and radiometers offer the possibility of individual configuration. Customers can choose from a wide selection of optometers, amplifiers, detector heads and accessories. In addition to its standard products, Gigahertz-Optik also offers customized solutions.

Step 1: As a first step we recommend the selection of a detector head. It is also possible to use several detector heads, which can be used interchangeably with single-channel meters or simultaneously with multi-channel meters. The selection criteria for a detector head include the required measurement quantity and range, its spectral function, and all other parameters relevant to the intended use.

Step 2: In the second step, accessories such as e.g. an integrating sphere can be selected. If the accessory changes the detector head’s measurand geometry and responsivity, an additional calibration for the detector head with accessories in the corresponding measurand must be selected.

Step 3: In the third step, the meter is selected. The planned use (e.g. mobile, stationary, manual or remote-controlled), the number of signal channels, the measurement  mode (CW, dose, pulse energy, temporal pulse progression) are all decision criteria.

Step 4: The connection of the measuring device for the detector head determines the connector type of the detector head. Gigahertz –Optik’s detectors are designed with connectors of the following four types:

  • Connector Type -1: Conventional BNC coaxial connector        
  • Connector Type -2: Calibration Data Connector with Eeprom for storing the detectors data (type, calibrated responsivity) read by the connected meter.
  • Connector Type -4: Compact plug for detector heads with up to four photodiodes.
  • Connector Type -5: Compact plug with calibration Eeprom

Step 5: To determine the measuring range of a selected configuration, some specifications of the selected detector head and meter are required. The typical sensitivity (e.g. A/lx) and the max. permissible signal current of the detector head and the minimum and maximum input signal of the measuring range of the meter.

Detection Limit (Noise Equivalent Power, N.E.P.) = Minimum input signal of the meter (A) / typical detector sensitivity (e.g., 0.1 pA / 3 nA / (mW / cm²) = 0.33 nW / cm². (*1) (*2)

Maximum reading = maximum input signal from the meter (A) / typical detector sensitivity (e.g., 20 μA / 3 nA / (mW / cm²) = 6.66 W / cm². (*3)                                                                                                                                           

Remarks:                                                                                                                                                   

(*1) The minimum measurable value of the broadband light meter or radiometer results from the desired signal-to-noise ratio (SNR). For a DIN Class A lux meter, e.g. a minimum SNR of 100 is given. For the detector head of the example calculation, an SNR of 100 would mean a minimum measureable value of 33 nW / cm². For applications in the limit area of optical radiation measurement technology, it is common to use lower SNR of 50 or even 10.                                                                                                                                                

(*2) In the case of very low detector current signals, movements of the cable between the detector head and the meter can lead to short, capacitive interference signals. In addition, strain effects on the plug of the detector head may increase the noise signal.                                                                                                                                         

(*3) The maximum calculated measurement value reflects the large dynamic range of semiconductor photodiodes. In practical application, however, the maximum measurable value is often limited by the temperature radiation contained in the measured optical radiation, which would mean unacceptable heating of the detector head.

Photometric  Detectors

V(lambda) Detectors

Model Photo Measured quantity Spectral function Typical responsivity Input optics / size FOV or Aperture Remarks
VL-3701 VL-3701 Illuminance (lux) Photopic; f1 ≤ 3% 0.5 nA/lx Diffuser / 7mmØ Cosine; f2 ≤ 1.5% DIN 5032 Class A precision photometric. Suitable for measuring white LEDs
VL-3702 VL-3702 Illuminance (lux) Photopic; f1 ≤ 6% 0.5 nA/lx Diffuser / 7mmØ Cosine; f2 ≤ 3% DIN 5032 Class B photometric
VL-3704 VL-3704 Illuminance (lux) Photopic; f1 ≤ 5% 20 pA/lx Diffuser / 7mmØ Cosine; f2 ≤ 3% Typically used with X1 / P-9802 optometers
VL-3705 VL-3705 Illuminance (lux) Scotopic; f1 ≤ 5% 0.3 nA/lx Diffusor / 7mmØ Cosine; f2 ≤ 3% DIN 5032 Class B scotopic specification
VL-3707 VL-3707 Illuminance (lux) Photopic 12 nA / lx Diffuser Cosine For very low light level, from 80,000 lx
VL-3701 with SRT-M37-L1 VL-3701 with SRT-M37-L Luminance (cd/m²) Photopic 1.2 pA/(cd/m²) Lens / 22.4 mmØ 1° FOV divergent Spot luminance measurement of large illuminated areas
VL-3701 with SRT-M37-L2 VL-3701 with SRT-M37-L Luminance (cd/m²) Photopic 5 pA/(cd/m²) Lens / 22.4 mmØ 2° FOV divergent Spot luminance measurement of large illuminated areas
VL-3701 with SRT-M37-L5 VL-3701 with SRT-M37-L Luminance (cd/m²) Photopic 30 pA/(cd/m²) Lens / 22.4 mmØ 5° FOV divergent Spot luminance measurement of large illuminated areas
LDM-9901 LDM-9901 Luminance (cd/m²) Photopic, f1 ≤ 5 % 25 pA/(cd/m²) Lens / 22 mm Ø 1.1° FOV
LDM-9811 with PD-16-VL LDM-9811 Luminance (cd/m²) Photopic See detailed specification in the data sheet
ISD-5-VL ISD-5-VL luminous flux (lm) Photopic, f1 ≤ 5 % 25 nA/lm Sphere / 50 mmØ 12mmØ 2-Pi luminous flux measurement e.g. of endoscopes
ISD-10-VL ISD-10-VL luminous flux (lm) Photopic, f1 ≤ 5 % 50 nA/lm Sphere / 100 mmØ 15mmØ
ISD-15P-VL ISD-15P-VL luminous flux (lm) Photopic, f1 ≤ 5 % 25 nA/lm Sphere / 150 mmØ 38.1 mm Ø

UV Detectors

High Sensitivity broadband UV Irradiance Detectors

Model Image Measured quantity Spectral function Wavelength range (nm) Typical responsivity Input Optic / Size (mm) Remarks
UV-3701 UV-3701 Irradiance (W/m²) UV-A UV-A 315-400 nm 4 nA/(W/m²) Diffuser / 11mmØ CIE / DIN defined UV-A range
UV-3702 UV-3702 Irradiance (W/m²) UV-B UV-B 280-315 nm 1.7 nA/(W/m²) Diffuser / 11mmØ CIE / DIN defined UV-B range
UV-3703 UV-3703 Irradiance (W/m²) UV-C UV-C (200)250-280 nm 2 nA/(W/m²) Diffuser / 11mmØ CIE / DIN UV-C from 250 nm
UV-3710 UV-3710 Irradiance (W/m²) UV-A

UV-A (320 - 400) nm

7 nA/(W/m²) Diffuser / 11mmØ Alternative UV-A range (e.g. non-biological applications)
UV-3711 UV-3711 Irradiance (W/m²) UV-B UV-B 280-320 nm 3 nA/(W/m²) Diffuser / 11mmØ Alternative UV-B range (e.g. non-biological applications)
UV-3711-308 UV-3711-308 Irradiance (W/m²) UV-B 308nm UV-B 308 nm 3 nA/(W/m²) Diffuser / 11mmØ UV-B detector for Excimer sources
UV-3716 UV-3716 Irradiance (W/m²) UV-A UV-A 305-400 nm 10 nA/(W/m²) Diffuser / 11mmØ Alternative UV-A range
UV-3717 UV-3717 Irradiance (W/m²) UV-A, visible blind UV-A 325-400 nm 1 nA/(W/m²) Diffuser / 11mmØ Highest blocking of visible radiation
UV-3718 UV-3718 Irradiance (W/m²) Narrowband UV-C UV-C 254 nm 2 nA/(W/m²) Diffuser / 11mmØ High intensity UV-C 254nm sources
UV-3719 UV-3719 Irradiance (W/m²) Broadband UV

UV 250 nm - 400 nm

1.9 nA/(W/m²) Diffuser / 11mmØ Broadband UV radiation
UV-3720 UV-3720 Irradiance (W/m²) UV-BC

UV 240 nm - 320 nm

260 pA/(W/m²) Diffuser / 11mmØ UV-B and UV-C reponsivity
UV-3725 UV-3725 Irradiance (W/m²) Narrowband UV-C

UV-C 254 nm

2 nA/(W/m²) Diffuser / 11mmØ Wide dynamic range UV-C 254nm e.g. for air disinfection
UV-3726 UV-3726 Irradiance (W/m²) UV-C

UV 240 nm - 320 nm

50 µA / (W / cm2) @254nm 11 mm Ø diffuser Low pressure Hg lamps (254 nm) and UV LEDs (250-300 nm)
UV-3727 UV-3727 Irradiance (W/m²) UV-C / B (200 - 310 nm)

UV 200 nm - 310 nm

57.5 µA / (W / cm2) @254 nm 19.2 mm Ø diffuser Excimer lamps (222nm), Low pressure Hg lamps (254 nm) and UV LEDs (250-300 nm)
UV-37 with SRT-M37-L-UV UV-37 with SRT-M37-L-UV Radiance (W/(m²sr)) Detector head dependent Front lenses for UV-37 detectors 22.4 mmØ; 1°, 2°, 5° or 10° FOV divergent

Smart Detector for UV to Blue LEDs

Detectors with Wavelength Detection

Model Image Measured quantity Wavelength Range / nm Irradiance Range Input Optic / Size (mm) Remarks
MDC4-1-UV MDC4-1-UV Irradiance (W/m²) 220 nm - 400 nm @222 nm: 41 W/cm² @254 nm: 19 W/cm² @270 nm: 15 W/cm² @280 nm: 14 W/cm² @340 nm: 10 W/cm² @365 nm: 9 W/cm² 5mm diffuser, cos FOV, f2 Low measurement errors and easy to use integral detector due to automatic wavelength detection (centroid wavelength).
MDC4-1-UVBLUE MDC4-1-UVBLUE Irradiance (W/m²) 300 nm - 700 nm @270 nm: 22 W/cm² @365 nm: 7,6 W/cm² @385 nm: 6 W/cm² @405 nm: 5 W/cm² @435 nm: 4,2 W/cm² @460 nm: 3,8 W/cm² @700 nm: 12,8 W/cm² 5mm Diffuser, Cosine FOV, f2 Low measurement errors and easy to use integral detector due to automatic wavelength detection (centroid wavelength).

Blue and UV Curing Detectors  

High intensity/temperature (max. temp +100°C. max irradiance 40 W/cm²)

Model Image Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) F.O.V. Remark
RCH-102 RCH-102 UV-A Blue (320 - 460) nm 0.6 nA/(mW/cm²) @ 405 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-106 RCH-106 Broadband UV (250 - 400) nm 1.8 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-108 RCH-108 Narrowband UV-A 365 nm peak 0.5 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-109 RCH-109 Narrowband Blue 430 nm peak 0.4 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-110 RCH-110 UV-BC (240 - 320) nm 0.7 nA/(mW/cm²) @ 254 nm Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-111 RCH-111 Narrowband UV-A (350 - 400) nm 1.6 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressureUV lamps. Rigid light guide.
RCH-112 RCH-112 Blue (400 - 450) nm 3.1 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-113 RCH-113 UV-VIS (305 - 485) nm 0.5 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Rigid light guide.
RCH-116 RCH-116 UV-A Blue (350 - 450) nm 1.8 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine LED-Sources @ 365, 375, 385, 395, 405 & 430 nm. Rigid light guide.
RCH-117 RCH-117 Red-NIR (650 - 970) nm Diffuser / 9mmØ Cosine For Red-NIR LED sources. Rigid light guide.
RCH-119 RCH-119 UV-A Blue (330 - 480) nm Diffuser / 9mmØ Cosine For UV-A and Blue LED sources. Rigid light guide.
RCH-002 RCH-002 UV-A Blue (320 - 460) nm 0.6 nA/(mW/cm²) @ 405 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-006 RCH-006 Broadband UV (250 - 400) nm 1.8 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-008 RCH-008 Narrowband UV-A 365 nm peak 0.5 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-009 RCH-009 Narrowband Blue 430 nm peak 0.4 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-010 RCH-010 UV-BC (240 - 320) nm 0.7 nA/(mW/cm²) @ 254 nm Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-011 RCH-011 Narrowband UV-A (350 - 400) nm 1.6 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-012 RCH-012 Blue (400 - 450) nm 3.1 nA/(mW/cm²) @ Medium pressure lamp Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-013 RCH-013 UV-VIS (305 - 485) nm 0.5 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine For medium pressure UV lamps. Flexible light guide.
RCH-016 RCH-016 UV-A Blue (350 - 450) nm 1.8 nA/(mW/cm²) @ 365 nm LED Diffuser / 9mmØ Cosine LED-Sources @ 365, 375, 385, 395, 405 & 430 nm. Flexible light guide.
RCH-017 RCH-017 Red-NIR (650 - 970) nm Diffuser / 9mmØ Cosine For Red-NIR LED sources. Flexible light guide.
RCH-019 RCH-019 UV-A Blue (330 - 480) nm Diffuser / 9mmØ Cosine For UV-A and Blue LED sources. Flexible light guide.

Visible-NIR Detectors

High sensitivity broadband irradiance

Model Image Measured quantity Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remark
RW-3701 RW-3701 Irradiance (W/m²) Radiometric Blue

radiometric (400 - 500) nm

35 nA/(W/m²) Diffuser / 11mmØ
RW-3702 RW-3702 Irradiance (W/m²) Radiometric Red

radiometric (700 - 800) nm

400 nA/(W/m²) Diffuser / 11mmØ
RW-3703 RW-3703 Irradiance (W/m²) Radiometric VIS

radiometric (400 - 800) nm

1.5 nA/(W/m²) Diffuser / 11mmØ
RW-3704 RW-3704 Irradiance (W/m²) Radiometric NIR

radiometric (800 - 1000) nm

40 nA/(W/m²) Diffuser / 11mmØ
RW-3705 RW-3705 Irradiance (W/m²) Radiometric VISNIR

radiometric (400 - 1000) nm

10 nA/(W/m²) Diffuser / 11mmØ
RW-3708 RW-3708 Irradiance (W/m²) Radiometric NIR

radiometric (1000 - 1700) nm

40 nA/(W/m²) Diffuser / 11mmØ
RW-37 with SRT-M37-L RW-37 with SRT-M37-L Radiance (W/(m²sr)) Detector head dependent Diffuser / 11mmØ Front lenses for RW-37 detectors

Multi-channel Detectors

Irradiance & Illuminance Detectors

Model Image Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remark
XD-9501 XD-9501

CH1: UV-A 315 nm - 400 nm
CH2: UV-B 280 nm - 315 nm

 

17nA/(W/m²) 2.5nA/(W/m²) Diffuser / 8mmØ UV Phototherapy, with 311nm calibration
XD-9502 XD-9502

CH1: UV-A (315 - 400) nm

CH2: Photopic; f1 ≤ 6% (380 - 780) nm

Ch1: 10nA/(W/m²) Ch2: 0.05 nA/lx Diffuser / 8mmØ NDT testing UV-A + lux
XD-9503 XD-9503

CH1: UV-A Peak 380 nm: (315 - 400) nm

CH2: UV-B Peak 311 nm: (280 - 315) nm

Ch1: 7nA/(W/m²) Ch2: nA/(W/m²) Diffuser / 8mmØ UV Phototherapy, TL01 and TL12 lamps
XD-9506 XD-9506

CH1: Actinic UV-A (320 - 400) nm

CH2: Actinic UV-BC (250 - 320) nm

 

Ch1: 4µA/(W/m²) Ch2: 1.5nA/(W/m²) Diffuser / 8mmØ ICNIRP/ACGIH Actinic UV / IEC EN 62471
XD-9509 XD-9509

CH1: Erythema UV-Aeff (320 - 400) nm

CH2: Erythema UV-BCeff (250 - 320) nm

Ch1: 1µA/(W/m²) Ch2: 3.8nA/(W/m²) Diffuser / 8mmØ CIE Erythemal spectral function
XD-9510 XD-9510

Ch 1: Suv(λ) UV-A (320 - 400) nm

Ch 2: Suv(λ) UV-BC (250 - 320) nm

Ch1: 4µA/(W/m²) Ch2: 1.5nA/(W/m²) Diffuser / 8mmØ Actinic UV DIN EN 12198

See also:  Light hazard meters                See also:  Photomedicine light meters

Laser Power Detectors

Detector heads for the measurment of radiant flux (W)

Model Image Wavelength range / nm Typical responsivity Max. signal current Input Optic / Size (mm) Aperture Remarks
LP-9901 LP-9901 Si 400 - 1100 nm

1 mA

Flat surface 7 mm Ø Laser power and laser scattered radiation. 7mm diameter measurement spot for laser safety measurements.
PD-45 Series PD-45 series Si 350 - 1100 nm Ge 800 - 1800 nm TP 300 - 10000 nm Flat surface 10 mm Ø Si, Ge and Thermopile version available for UV/VIS/NIR/IR spectral range
PD-MSD Series PD-MSD series PD-MSD-Si (200 nm to 1100 nm): 30 nW to 30 mW (typ) PD-MSD-TP (300 nm to 10000 nm): 100 µW to 2 W (typ) 76 mm x 25,2 mm x 5 mm Fits directly into the focal plane of a microscope Laser power head for microscope measurements available in two versions (Si and Thermopile) for precise laser power measurement
ISD-0.8-SiLP ISD-0.8-SiLP 33 mA/W @ 633 nm 46 mA/W @ 900 nm

1 mA

Sphere / 8 mmØ 2 mm Short rise time for Laser power in W. 400 nm - 1100 nm responsivity, optional SMA Adapter, for use with fast optometers and signal amplifiers
ISD-1.6-SP-Vxx ISD-1.6-SP-Vxx

(400 - 1100) nm

V0x: 8.4 µW/A @900nm V01: 6.0 µW/A @900nm

1 mA (photodiode used for absolute measurement)

Sphere / 16 mmØ V0x: 5 mm V01: 7 mm Time resolved pulse shape and absolute pulse energy.
ISD-1.6-Si ISD-1.6-Si

(400 - 1100) nm

V0x: 8.4 µW/A @900 nm V01: 6.0 µW/A @900 nm

1 mA

Sphere / 16 mmØ V0x: 5 mmØ V01: 7 mmØ Pulse energy and pulse shape of ns pulses
ISD-5-Si ISD-5-Si

(400 - 1100) nm

 

2.9E-3 A/W @ 630 nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-3P-Si ISD-3P-Si

400 nm - 1100 nm radiometric

8.87E-04 A/W @ 900 nm

1 mA

Sphere / 30 mmØ 5 mm Ø
ISD-3P-IGA ISD-3P-IGA

800 nm - 1800 nm radiometric

0.17E-04 A/W @ 1300 nm

1 mA

Sphere / 30 mmØ 5 mm Ø
ISD-5P-Si ISD-5P-Si

400 nm - 1100 nm radiometric

2.5E-03 A/W @ 630 nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-5P-IGA ISD-5P-IGA

(800 - 1800) nm

0.2 mA/W @ 1400 nm

1 mA

Sphere / 50 mmØ 12.7 mm Ø
ISD-10-Si ISD-10-Si

400 nm - 1100 nm Si Photodiode

1.6 mA/W @ 633 nm

1 mA

Sphere / 100 mmØ 15 mm Ø
ISD-15-Si ISD-15-Si

400 nm - 1100 nm Si Photodiode

60 µA/W @ 633 nm

1 mA

Sphere / 150 mmØ 38.1 mm Ø
ISD-30 ISD-30

(400 - 1100) nm or (800 - 1800) nm

0.2 mA/W @ 633 nm 0.25 mA/W @ 900 nm 25 µA/W @ 1300 nm 18 µA/W @ 1550 nm

1 mA

Sphere / 300 mmØ 100 mm Ø Two detectors Si and IGA
LP-9901 LP-9910 Si 400 - 1100 nm Nackte Fotodiode 7 mm Ø Low profile detector head with 7mm diameter active area to measure laser radiant power in W and irradiance in W/m².

Compact Modular Detectors

Model Image Spectral function Wavelength range / nm Typical responsivity Max. signal current Aperture Remarks
PD-1101 PD-11 Series UV Si photodiode (250 -1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 3.6 mm x 3.6 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1102 PD-11 Series InGaAs photodiode (800 -1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 0.3 mm Ø For combining with integrating spheres, optics, filters and mechanical components
PD-1103 PD-11 Series InGaAs photodiode (800 -1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 1 mm Ø
PD-1104 PD-11 Series InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 3 mm Ø For combining with integrating spheres, optics, filters and mechanical components
PD-1105 PD-11 Series SiC photodiode (215 - 360) nm 0.16 A/W @ 270 nm 50 µA 1.25 mm x 1.25 mm
PD-1109 PD-11 Series GaP photodiode (250 - 550) nm 0.07 A/W @ 350 nm 100 µA 2.2 mm x 2.2 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1112 PD-11 Series GaAsP (UV) photodiode (200 - 680) nm 0.035 A/W @ 254 nm 0.17 A/W @ 633 nm 1 mA 2.3 mm x 2.3 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1113 PD-11 Series GaAsP (Vis) photodiode (400 - 760) nm 0.22 A/W @ 560 nm 0.29 A/W @ 633 nm 1 mA 2.3 mm x 2.3 mm For combining with integrating spheres, optics, filters and mechanical components
PD-1115 PD-11 Series Si PIN photodiode (400 - 1050) nm 0.5 A/W @ 900 nm 1 mA 0.8 mm Ø For combining with integrating spheres, optics, filters and mechanical components
VL-1101 VL-1101 Photopic; f1 ≤ 5% (380 - 780) nm 0.3 nA/lx 1 mA 1.1 mm Ø Modular photometric detector
TD-11VL01 TD-11VL01 Photopic; f1 ≤ 5% (380 - 780) nm 1 mA 2,7 x 2,7 mm behind filter Temperature stabilised. Typically used as monitor detector on integrating spheres.

Modular Detectors

Model Image Spectral function Wavelength range / nm Typical responsivity Max. signal current Aperture Remarks
MD-37-GP6 MD-37 series GaP photodiode (250 - 550) nm 0.07 A/W @ 350 nm 100 µA 2.5 mm x 2.5 mm
MD-37-GAP-UV MD-37 series GaAsP (UV) photodiode (200 - 680) nm 0.035 A/W @ 254 nm 0.17 A/W @ 633 nm 100 µA 2.3 mm x2.3 mm
MD-37-GAP-VIS MD-37 series GaAsP (Vis) photodiode (400 - 760) nm 0.22 A/W @ 560 nm 0.29 A/W @ 633 nm 1 mA 2.3 mm x2.3 mm
MD-37-IGA1 MD-37 series InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 1 mm Ø
MD-37-IGA3 MD-37 series InGaAs photodiode (800 - 1800) nm 0.85 A/W @ 1350 nm 0.95 A/W @ 1500 nm 1 mA 3 mm Ø
MD-37-SC1 MD-37 series SiC photodiode (215 - 360) nm 0.16 A/W @ 270 nm 50 µA 1.25 mm x 1.25 mm
MD-37-SU13 MD-37 series UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 3.6 mm x 3.6 mm
MD-37-SU33 MD-37 series UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 5.8 mm x 5.8 mm
MD-37-SU33-VL MD-37 series Photopic; f1 ≤ 6% (380 - 780) nm 1 mA
MD-37-SU100 MD-37 series UV Si photodiode (250 - 1100) nm 0.15 A/W @ 350 nm 0.5 A/W @ 900 nm 1 mA 10 mm x 10 mm
MD-37-SU100-VL MD-37-SU100-VL Photopic; f1 ≤ 6% (380 - 780) nm 22 nA/lx 1 mA 9 mm x 9 mm
MD-37-SU100-VLS MD-37-SU100-VLS Scotopic; f1 ≤ 6% (380 - 780) nm 22 nA/lx 1 mA 9 mm x 9 mm

PAR Detectors

Photosynthetic Active Radiation (PAR) detectors

Model Image Measured quantity Spectral function Wavelength range / nm Typical responsivity Input Optic / Size (mm) Remarks
PS-3701 PS-3701 PAR µMol·m²·s PPFD 400 - 700 100 nA/(µMol·m²·s) 15 mm Ø
PS-3702 PS-3702 PAR µMol·m²·s Phototropism (UV-A / Green) 320 - 500 2 nA/(µMol·m²·s) 2 nA/(µMol·m²·s)
PS-3703 PS-3703 PAR µMol·m²·s Photomorphogenesis (Red / NIR) 590 -900 100 nA/(µMol·m²·s) 15 mm Ø
CSS-45 with CSS-D CSS-45 with CSS-D many derived out of spectra flexible 360 - 830 10 mm spectral sensor

Detector Accessories

A modular range of add-on assemblies including lenses, diffusers, light shields, etc is available for the Gigahertz-Optik optical detector heads.

Model Description
SRT-M45/37B Front adapter for detector heads with 37mm and 45mm diameter for attaching accessories with M30x1 thread.
SRT-M37L-1 Front optics with 1 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-2 Front optics with 2 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-5 Front optics with 5 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-10 Front optics with 10 ° FOV for use with front adapters SRT-M45 / 37B or MD-37 series devices.
SRT-M37L-1-UV UV optic with 1 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-2-UV UV optic with 2 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-5-UV UV optic with 5 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
SRT-M37L-10-UV UV optic with 10 ° FOV for use with SRT-M45 / 37B front adapters or MD-37 series devices.
MD-37-CUS MD-37 measuring head for individual assembly with photodiodes (not included). Includes housing, circuit board, connection cable, -1, -2 or -4 plug.
MD-37Z-H7 Front adapter for filters, diffusers, etc. Length 7 mm. M30x1 thread on both sides.
MD-37Z-C8 Front adapter with 8 mm aperture. M30x1 threaded.
MD-37Z-C11 Front adapter with 12mm aperture. M30x1 threaded.
MD-37Z-DR11 Front adapter with 11 mm diffuser. M30x1 threaded.
MD-37Z-FCF Front adapter with FC connector. M30x1 threaded.
SRT-M37-50 Front adapter 50mm long, M30x1 threaded on both ends
SRT-M37-60-L Attachment optics with 50 mm diameter. FOV according to specification. For use with SRT-M45 / 37B front adapters or MD-37 series probes.
SRT-M37Z01 Front adapter with stray light shield. M30x1 threaded.

Note: -5 connectors (ITT MSDM9, as per -4 type) incorporate Eeprom for storage of calibration data.