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Proceedings Paper

Femtosecond pulses and laser resonators
Author(s): Jean-Claude M. Diels; Ladan Arissian
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Paper Abstract

In a mode-locked laser, a wave packet of light of transverse dimension of the order of a mm, and longitudinal dimension of only a few micron, travels back and forth in a resonator of the order of one or two meter. It is difficult to conceive why a light bullet, six orders of magnitude shorter than the cavity, would care whether its central wavelength would fit as a sub-multiple of the cavity length. As the length of the resonator changes constantly because of vibrations, thermal drifts, the “central wavelength” of the intracavity fs pulse should also change constantly to follow the cavity resonances. We present evidence that this is indeed the case, and that the micron long wave packet traveling in the cavity does indeed keep record of cavity motion, with subwavelength accuracy. Applications range from distance measurements with a spatial resolution of 0.01 pm, and fs temporal resolution, to inertial navigation (measurement of acceleration and rotation). Stabilization of the mode-locked laser can enhance the resolution of these measurements by at least three orders of magnitude.

Paper Details

Date Published: 12 April 2005
PDF: 9 pages
Proc. SPIE 5708, Laser Resonators and Beam Control VIII, (12 April 2005); doi: 10.1117/12.606948
Show Author Affiliations
Jean-Claude M. Diels, Univ. of New Mexico (United States)
Ladan Arissian, Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 5708:
Laser Resonators and Beam Control VIII
Alexis V. Kudryashov; Alan H. Paxton, Editor(s)

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