Sciencetech offers modular spectroradiometer system with high light throughput and minimal stray light. The system allows spectral characterization and calibration of ultraviolet, visible and infrared spectrum using UV-Vis and Infrared array detectors.
A cosine correcting optics with a near cosine response between intensity transmitted and angle of incidence at the integrating optic allows the highest possible throughput. A fiber optic is used to allow for more convenient placement of the integrating optics in the area to be tested. Optical and electronic gates are used to integrate discrete temporal component of the light pulses to the spectral dispersion system. The light pulse and detection system synchronized using triggering electronics and results in very low integration time (0.5 ms). The spectral dispersion system efficiently transmits the required spectral bandpass to the array detectors. There is a separate spectral dispersion system for UV-VIS and IR systems
Pulsed Solar Radiation Measurement
Solar simulator testing and classification
Light source metrology
Sci -Vidi time resolved spectroradiometer provides advanced characterization tool for pulsed solar simulators. Solar simulators with different technical specification are designed to fit specific application, and are generally divided into two categories continuous or steady-state and pulsed. The continues type is mostly used for low intensity of one up to several suns. The pulsed version has flash/pulse of typically few milliseconds and it is commonly used for high intensity testing of up to several thousand suns. For second type, pulsed spectroradiometers synchronised with pulse of solar simulators are critical for spectral irradiance analysis.
Accurate measure of radiometric quantities is essential requirement for manufactures of solar simulators and solar devices such as solar cells, panels, and modules. The manufactures have to validate compliance to spectral requirements. Generally, solar simulator should be tested for uniformity of power distribution, spectral match and temporal instability. Calibrated spectroradiometers measure spectral irradiance and facilities simulator classification.
Sci-Vidi includes a NIST-traceable irradiance calibration to ensure accurate and consistent measurements and it complies with ASTM G 138-12(Standard Test Method for Calibration of a Spectroradiometer Using a Standard Source of Irradiance). All components of the system designed to transmit 300-2000 nm efficiently.
Integrating Optics: Cosine correcting outputs
Optical Relay System: Optical fiber
Pulse Monitor Detectors
Visible and Infrared Region Optical Gate
UV-Vis Detector: 2048 element back thinned CCD linear image sensor
IR Detector: 256 element InGaAs linear array detector
Data Management and Software
Spectral Range: 300nm - 2000nm
Spectral Resolution: UV-VIS =< 2nm, IR =< 6nm
100μs trigger delay resolution to synchronize the optical gate with the pulse
2048 element UV-Vis black-thinned CCD linear image sensor, and dynamic range of 6670, and 256 element TE-cooled extended InGaAs photodiode array detector with dynamic range of 10000
Adjustable integration and scan averaging time
0.5ms minimum integration time
SNR > 40 for 250-2000nm range when illuminated with 1 Sun AM0 pulse measured over 500 μs time interval
Data Management and Software
The SciSolarQ gives operators the possibility to control the spectroradiometer and interpret and analyze the data provided by the data management system. It is developed for Windows system, and measures the spectral power distribution. It provides analysis of spectral results against a standard, (for example MIL 810G).
Colorimetric characterization of light sources
Pulsed solar simulator testing and classification