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
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.3600) Lasers and laser optics : Lasers, tunable
Kevin S. Repasky and John L. Carlsten, "Simple Method for Measuring Frequency Chirps with a Fabry–Perot Interferometer," Appl. Opt. 39, 5500-5504 (2000)