Optical Sensors & Detector – UV Photodetectors
Galliumphosphide (GaP) Photodetector – TOCON_GAP8GAP
TOCON_GAP8GAP – Gallium Phosphide Photodetector for Precision Blue and Near-UV Light Measurement Applications
The TOCON_GAP8GAP from SGLUX GmbH is a precision-calibrated Gallium Phosphide (GaP) photodetector engineered for accurate blue and near-ultraviolet light measurement in scientific and industrial environments.
It features a solar-blind GaP photodiode with an integrated low-noise transimpedance amplifier, offering a 0–5 V DC output directly proportional to incident irradiance.
Covering a spectral range from 150 nm to 550 nm with a peak sensitivity around 440 nm, it is ideal for blue, violet, and UV-A light detection while remaining insensitive to infrared light.
Each sensor is factory-calibrated and traceable to NIST / PTB standards, ensuring repeatable, traceable performance in LED testing, fluorescence measurement, optical calibration, and curing-process control.
The TOCON_GAP8GAP delivers exceptional stability, linearity, and spectral accuracy, making it an essential tool for precision light monitoring and photometric validation applications.
Understanding Galliumphosphide (GaP) Photodetector - TOCON_GAP8GAP
The TOCON_GAP8GAP employs a Gallium Phosphide (GaP) photodiode known for its sensitivity in the blue and near-UV regions and complete blindness to infrared light.
It provides a linear voltage output (0–5 V) via an internal amplifier, simplifying integration with industrial controllers or the SGLUX SENSOR MONITOR 5.0 system.
Factory-calibrated and traceable to NIST / PTB, it delivers accurate, repeatable irradiance readings across 150–550 nm.
Ideal for LED testing, UV-A light calibration, fluorescence studies, and photobiological research, the TOCON_GAP8GAP ensures high precision and stability in demanding optical measurement applications.
Technical Specifications
| Feature | Specification |
|---|---|
| Function | Gallium Phosphide (GaP) photodetector with integrated amplifier |
| Detector Type | GaP photodiode with internal transimpedance amplifier |
| Spectral Range | 150 – 550 nm (visible and near-UV) |
| Peak Wavelength | 440 nm |
| Output Signal | 0 – 5 V DC (linear with irradiance) |
| Sensitivity | High for blue and UV-A light |
| Accuracy | ±5 % of reading |
| Response Time | < 1 s |
| Visible / IR Rejection | Excellent IR blindness |
| Operating Voltage | 5 – 24 V DC |
| Operating Temperature | −20 … +85 °C |
| Housing Material | Anodised aluminium TOCON enclosure |
| Optical Window | UV-grade quartz or optical glass |
| Connector | BNC / M8 / custom cable output |
| Calibration | Factory-calibrated, traceable to NIST / PTB |
| Compatibility | SENSOR MONITOR 5.0 / VOLTCON / SGCD4 systems |
| Applications | Blue/UV-A light measurement, LED testing, fluorescence detection, UV curing, optical instrumentation |
Key Features and Advantages
Broad Spectral Sensitivity (150–550 nm)
The TOCON_GAP8GAP accurately measures across the visible and near-UV range, ideal for blue-light and UV-A applications such as photobiology and LED calibration.
Infrared and Red-Light Rejection
The Gallium Phosphide detector is inherently IR-blind, ensuring pure spectral response without interference from red or IR light sources.
Integrated Low-Noise Amplifier
Features a built-in transimpedance amplifier that provides a stable, linear 0–5 V output, simplifying system design and integration.
Traceable Factory Calibration
Each sensor is NIST / PTB calibrated, ensuring globally traceable accuracy for regulated and scientific measurement systems.
Fast Response and High Stability
Delivers sub-second response and stable long-term performance under continuous light exposure and varying ambient conditions.
Compact and Durable Design
Encased in a rugged anodised aluminium housing, the sensor withstands industrial use and laboratory conditions.
Easy Integration
Compatible with SGLUX SENSOR MONITOR 5.0, VOLTCON, and SGCD4, enabling seamless data logging and automation control.
The TOCON_GAP8GAP offers precise blue and near-UV light measurement, making it indispensable for LED development, optical calibration, and scientific photometric applications.
Applications Across Industries
LED and Light Source Testing
Used for output characterisation of blue and UV-A LEDs, ensuring accurate intensity and wavelength verification.
Fluorescence and Photoluminescence Measurement
Monitors excitation sources in fluorescence spectroscopy and bioassay systems.
Optical Calibration and Laboratory Research
Acts as a reference detector for calibration of optical power meters and light sources.
UV Curing and Process Control
Ensures accurate irradiance monitoring in UV-curing systems for adhesives, coatings, and printing applications.
Environmental and Photobiological Studies
Measures visible and UV-A light intensity for research in environmental photobiology and exposure assessment.
Industrial Automation and Quality Control
Integrates into production and inspection systems requiring precise light measurement for process validation.
With its traceable calibration, spectral precision, and infrared rejection, the TOCON_GAP8GAP ensures reliable and repeatable light measurement performance across industrial, research, and optical test environments.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX TOCON_GAP8GAP in India
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Expertise in visible and UV-A light measurement systems
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Local calibration traceable to NIST / PTB standards
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Cost-effective solutions for industrial, R&D, and photometric testing
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Nationwide integration, calibration, and after-sales support
FAQs
What spectral range does the TOCON_GAP8GAP cover?
It measures light from 150 nm to 550 nm, peaking near 440 nm.
Why use Gallium Phosphide instead of Silicon?
GaP offers better IR rejection and enhanced accuracy for blue and near-UV light.
Is the sensor factory-calibrated?
Yes – each unit is factory-calibrated and traceable to NIST/PTB standards.
Can it detect blue and UV-A LEDs?
Yes – it’s specifically designed for blue and UV-A LED measurement and calibration.
How does United Spectrum support Indian customers?
By offering local calibration, integration, and nationwide technical service for optical and radiometric systems.
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Have Any Questions ?
FAQs
What spectral range does the TOCON_GAP8GAP cover?
It measures light from 150 nm to 550 nm, peaking near 440 nm.
Why use Gallium Phosphide instead of Silicon?
GaP offers better IR rejection and enhanced accuracy for blue and near-UV light.
Is the sensor factory-calibrated?
Yes – each unit is factory-calibrated and traceable to NIST/PTB standards.
Can it detect blue and UV-A LEDs?
Yes – it’s specifically designed for blue and UV-A LED measurement and calibration.
How does United Spectrum support Indian customers?
By offering local calibration, integration, and nationwide technical service for optical and radiometric systems.
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