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Tautochronism principle and grating dispersive delay lines |
Applied Optics, Vol. 51, Issue 1, pp. 27-32 (2012)
http://dx.doi.org/10.1364/AO.51.000027
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Abstract
Dispersion delay lines (DDLs) are used for dispersion compensation in ultrafast optics. Note that the correct determination of the time delay of DDLs is based on the tautochronism principle: in an optical system consisting of refracting and reflecting elements the time delay between any two wavefronts is the same for all rays. But for diffraction gratings this principle is not valid; the time delay between the wavefronts of incident and diffracted waves for different light rays is different. However, fortunately, a pair of diffraction gratings can be combined so that the input and the output wavefronts of the system still satisfy the tautochronism principle. There are only two such grating systems: Treacy’s system and Martinez’s system. Both these systems are closely related to each other: in Martinez’s system one can see virtual Treacy’s system. Note that according to the tautochronism principle, dispersion Martinez’s system and virtual Treacy’s system are equal in value but opposite in sign.
© 2012 Optical Society of America
OCIS Codes
(140.7090) Lasers and laser optics : Ultrafast lasers
(320.5520) Ultrafast optics : Pulse compression
(320.7080) Ultrafast optics : Ultrafast devices
ToC Category:
Diffraction and Gratings
History
Original Manuscript: June 20, 2011
Revised Manuscript: November 2, 2011
Manuscript Accepted: November 2, 2011
Published: December 22, 2011
Citation
Andrey Gitin, "Tautochronism principle and grating dispersive delay lines," Appl. Opt. 51, 27-32 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-1-27
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