Silicon photodiode self-calibration using white light for photometric standards: theoretical analysis

Area of Science:

• Photodetector calibration
• Optical metrology
• Silicon photodiode characterization

Background:

• Accurate photometric standards are crucial for light measurement.
• Existing calibration methods for silicon photodiodes can be complex and prone to errors.
• V(lambda) filters are essential for spectral matching in photometry.

Purpose of the Study:

• To propose a novel, direct self-calibration method for silicon photodiode responsivity.
• To quantify potential systematic errors associated with the proposed method.
• To assess the feasibility of achieving high-accuracy photometric standards.

Main Methods:

• Direct self-calibration of silicon photodiode responsivity (A/Im) using white light.
• Measurement of surface reflectance and recombination losses of the photodiode.
• Computer simulation to quantify systematic errors from equation approximations.

Main Results:

• A method for direct self-calibration of photodiode responsivity is proposed.
• Computer simulations predict potential systematic errors.
• Predicted accuracy of the method is better than 0.2%.

Conclusions:

• The proposed method offers a practical approach for high-accuracy photometric standards.
• Further experimental validation is required.
• This technique has the potential to advance optical metrology.