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Optics Letters

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  • Vol. 29, Iss. 13 — Jul. 1, 2004
  • pp: 1458–1460

Multiple-beam interference patterns in optical fiber generated with ultrafast pulses and a phase mask

Christopher W. Smelser, Stephen J. Mihailov, Dan Grobnic, Ping Lu, Robert B. Walker, Huimin Ding, and Xiaoli Dai  »View Author Affiliations


Optics Letters, Vol. 29, Issue 13, pp. 1458-1460 (2004)
http://dx.doi.org/10.1364/OL.29.001458


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Abstract

We compare the cladding patterns present in grating structures fabricated with an ultrafast laser and a phase mask with a cw beam interference model. We find that the observed patterns agree well with the model results for picosecond pulses; however, for femtosecond pulses, we show that the full bandwidth and the pulsed nature of the sources must be considered because the pattern can be affected by group-velocity walk-off. An interesting consequence of order walk-off is the possibility of pure two-beam interference generation with a phase mask in the femtosecond pulse regime.

© 2004 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(230.1480) Optical devices : Bragg reflectors
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.5390) Ultrafast optics : Picosecond phenomena
(320.7140) Ultrafast optics : Ultrafast processes in fibers
(350.3390) Other areas of optics : Laser materials processing

Citation
Christopher W. Smelser, Stephen J. Mihailov, Dan Grobnic, Ping Lu, Robert B. Walker, Huimin Ding, and Xiaoli Dai, "Multiple-beam interference patterns in optical fiber generated with ultrafast pulses and a phase mask," Opt. Lett. 29, 1458-1460 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-13-1458


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