Each type of detector has its advantages and disadvantages, and the choice of detector depends on the specific application.
The text outlines how to evaluate detector performance, including:
ϵ=MrealMblackbodyepsilon equals the fraction with numerator cap M sub real end-sub and denominator cap M sub blackbody end-sub end-fraction
) to characterize performance. You can explore the foundational principles of optical physics by referencing this seminal work.
Determines the peak emission wavelength based on temperature. radiometry and the detection of optical radiation boyd pdf
Generated by the thermal agitation of charge carriers inside an electrical resistor. It depends entirely on temperature and bandwidth, occurring even when no light is present.
): A normalized version of detectivity that accounts for variations in detector area and electrical bandwidth, allowing an objective comparison between different detector technologies. Applications and Modern Relevance
Understanding the book's author, Robert W. Boyd, provides crucial context for its authority and depth. Boyd is an American physicist of immense stature, most famous for his other classic, Nonlinear Optics , which is the standard text in that field. As of 2024, he holds the Canada Excellence Research Chair in Quantum Nonlinear Optics at the University of Ottawa and is a faculty member at the University of Rochester.
Thermal detectors absorb optical energy, raise their own internal temperature, and measure a subsequent change in a physical property. Change electrical resistance with temperature. Each type of detector has its advantages and
Broadband response (equally sensitive to UV, visible, and IR light), but generally feature slower response times. Quantum (Photon) Detectors
Do you need help calculating for a specific detector setup?
Broad, flat spectral response; slower response times.
): The radiant flux emitted, reflected, transmitted, or received per unit surface area per unit solid angle. Measured in Determines the peak emission wavelength based on temperature
Robert W. Boyd’s Radiometry and the Detection of Optical Radiation remains an indispensable textbook for students and practicing engineers alike. By uniting the geometry of light propagation with the solid-state physics of photon detection, it provides a comprehensive manual for analyzing any electro-optical system.