A coherent heterodyne detector has a dynamic range of up to fifteen decades, as well as shot-noise-limited sensitivity. Applications of coherent heterodyne radiometry that exploit the extraordinary dynamic range include the calibration of optical filters and the measurement of scattered light from surfaces and materials.
© 1988 Optical Society of America
James J. Snyder, "Wide dynamic range optical power measurement using coherent heterodyne radiometry," Appl. Opt. 27, 4465-4469 (1988)