The quantum efficiency tester supports an automated data acquisition process, where users only need to set the parameters to complete a series of measurement tasks, greatly improving work efficiency. By monitoring the products in real-time during the production process, it can help manufacturers discover and solve problems in a timely manner, optimize production processes, and improve product quality and consistency. In order to accurately measure weak signals, the tester is equipped with a high-resolution detector and a low-noise preamplifier circuit. This makes the measurement results highly accurate and reliable, accurately reflecting the optical properties of the material. Capable of adapting to various application requirements, providing a wide range of wavelength choices from ultraviolet to near-infrared.

Measurement steps of quantum efficiency tester:

1. Sample preparation and installation

-Cleaning treatment: Ensure that the surface of the tested sample is free of dust, oil stains, or other impurities, and if necessary, gently wipe it with a suitable solvent.

-Fixed installation: Place the sample firmly on the dedicated fixture or platform of the tester, ensuring that the illuminated area covers the target area and avoids obstruction.

2. Parameter setting and system debugging

-Wavelength selection: Set a specific wavelength range according to testing requirements, usually achieved through accurate control using a monochromator; If multi band analysis is involved, it is necessary to adjust and record the data step by step.

-Equipment calibration: Place the components to be measured (such as CCD chip) and standard detector together with the driving circuit in the darkroom, and adjust the parameters of each component of the measurement system to a stable state. For example, after turning on the light source, control the current within the specified range and activate the relevant switches.

-Optical path alignment: Use a moving displacement table to accurately align the standard part with the laser spot, ensuring the accuracy of the measurement position.

3. Data collection and calculation

-Initial measurement: Record the value of the picometer, search for the theoretical value of the corresponding wavelength based on the preset table, and obtain the actual power value by dividing the values. This step needs to be repeated multiple times to improve reliability.

-Dark image acquisition: Cover the lens to prevent stray light from entering, use the upper computer software to continuously capture images, input parameters such as wavelength and power, and click "Quantum Efficiency" to complete data collection under dark conditions.

4. Dynamic control and optimization

-Integral time adjustment: Control the exposure time and amount of the CCD chip through an electronic shutter to optimize the signal strength to noise ratio. Generally, there is no need to make frequent changes after the adjustment is completed.

-Environmental stability monitoring: Maintain constant temperature and humidity conditions to avoid temperature fluctuations exceeding ± 2 ℃, in order to reduce the impact of thermal noise on the results.