High-resolution mode-spacing measurement of the blue-violet diode laser using interference of fields created with time delays greater than the coherence time

摘要

Multi-mode cw blue-violet diode-lasers exhibit interference revival when the interfero-metric path-length-difference is much greater than the self-coherence time. Using the equally-spaced and recurring interference envelopes, high-resolution mode-spacing measurement is possible without using high-resolution spectrometers.