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Dispersion compensation by a liquid lens (DisCoBALL)

TitleDispersion compensation by a liquid lens (DisCoBALL)
Publication TypeJournal Article
Year of Publication2019
AuthorsDurst, ME, Turcios, A, Laurence, C, Moskovitz, E
JournalApplied Optics
Date PublishedJan
KeywordsDigital micromirror devices, Femtosecond pulse shaping, Fiber Bragg gratings, Liquid crystal modulators, Photonic bandgap fibers, Photonic crystal fibers

We present dispersion compensation by a liquid lens (DisCoBALL), which provides tunable group-delay dispersion (GDD) that is high speed, has a large tuning range, and uses off-the-shelf components. GDD compensation is crucial for experiments with ultrashort pulses. With an electrically tunable lens (ETL) at the Fourier plane of a 4f grating pair pulse shaper, the ETL applies a parabolic phase shift in space and therefore a parabolic phase shift to the laser spectrum, i.e., GDD. The GDD can be tuned with a range greater than 2&\#x00D7;105&\#x2009;&\#x2009;fs2 at a rate of 100&\#x00A0;Hz while maintaining stable coupling into a single-mode fiber.


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