Frequency-modulation spectroscopy with a multimode dye laser
Related Experiment Video
Updated: Jun 10, 2026
08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Applied Optics
|August 21, 2010
Abstract:
A multimode laser in frequency-modulation spectroscopy gives a signal that is broader than the absorption line by an amount that is determined by how sharp the edges of the laser profile are, not by the total bandwidth of the laser. We have experimentally demonstrated that one can therefore obtain frequency-modulation signals that are narrower than the total bandwidth of the laser.
