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Avoiding temporal distortions in tilted pulses |
Optics Letters, Vol. 37, Issue 12, pp. 2373-2375 (2012)
http://dx.doi.org/10.1364/OL.37.002373
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Abstract
Tilted femtosecond laser pulses, having an intensity front with an angle to the propagation direction, can be generated by a dispersive element and a lens or mirror for imaging. Here we show that conventional geometries, for example with a grating at Littrow’s condition, produce significant temporal distortions over the beam profile. The aberrations are the result of a mismatch between the grating’s surface and the object plane of the imaging system. This changes the chirp of the pulses over the beam profile and lengthens the pulses to picoseconds for millimeter-sized beams. The distortions can be avoided by choosing a geometry in which the propagation direction of the tilted pulses is perpendicular to the grating’s surface.
© 2012 Optical Society of America
OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(230.7020) Optical devices : Traveling-wave devices
(320.0320) Ultrafast optics : Ultrafast optics
ToC Category:
Diffraction and Gratings
History
Original Manuscript: March 8, 2012
Revised Manuscript: April 26, 2012
Manuscript Accepted: April 26, 2012
Published: June 12, 2012
Citation
Daniel Kreier and Peter Baum, "Avoiding temporal distortions in tilted pulses," Opt. Lett. 37, 2373-2375 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-12-2373
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