Strongly enhanced negative dispersion from thermal lensing or other focusing effects in femtosecond laser cavities
JOSA B, Vol. 17, Issue 4, pp. 646-651 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000646
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Abstract
We demonstrate a new scheme for dispersion compensation in femtosecond laser cavities, exploiting the observation that the negative dispersion from a Brewster interface can be strongly enhanced by the focusing effect of a curved surface on a prism or of a thermal lens in the gain medium. Based on this scheme, a high-power Nd:glass laser generated femtosecond pulses without a prism pair. We present a detailed analytical, numerical, and experimental analysis of the discovered dispersion effects. Also, we anticipate the application of these effects for compensation of higher-order dispersion in a broad bandwidth, using a specially designed nonspherically curved mirror surface.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.4050) Lasers and laser optics : Mode-locked lasers
(260.2030) Physical optics : Dispersion
Citation
R. Paschotta, J. Aus der Au, and U. Keller, "Strongly enhanced negative dispersion from thermal lensing or other focusing effects in femtosecond laser cavities," J. Opt. Soc. Am. B 17, 646-651 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-4-646
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