Abstract

A simple method for measuring the frequency-chirped response of lasers is presented. This method relates the deviation from the Lorentzian line shape of the transmission of a Fabry–Perot interferometer to the frequency chirp of the laser and allows a direct measurement of the frequency chirp. Two chirps produced by an external-cavity laser diode with an intracavity electro-optic crystal were measured. The first measurement was of a linear chirp of 800 MHz occurring in a time of 12.3 µs, and the second measurement was of eight repeated 800-MHz linear chirps each occurring in 337 µs. Agreement between the measured and the expected frequency-chirped response of the laser is shown.

© 2000 Optical Society of America

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