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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 23 — Aug. 10, 2004
  • pp: 4571–4574

Fabrication of beam shapers in the bulk of fused silica by femtosecond laser pulses

Xi Wang, Hengchang Guo, Hong Yang, Hongbing Jiang, and Qihuang Gong  »View Author Affiliations


Applied Optics, Vol. 43, Issue 23, pp. 4571-4574 (2004)
http://dx.doi.org/10.1364/AO.43.004571


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Abstract

We reported a new approach to the fabrication of three-dimensional refractive-index-modified microstructures inside transparent materials by combining two-dimensional writing by scanning the focus of the femtosecond laser pulse and by forming the long filament in the third dimension. In this way, embedded diffractive beam shapers of grid, square, and ring gratings were obtained in the bulk of fused silica by use of a femtosecond laser with a wavelength of 810 nm and a repetition rate of 1 KHz. These structures and their refractive efficiencies were optimized by selection of the appropriate fabrication parameters, including the pulse energy, grating period, scanning speed, and scanning repetition. The good performance of these devices indicates that, owing to its simple and flexible method for fabricating complex phase elements inside transparent materials, this technique has potential applications to integrated optics.

© 2004 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(220.4000) Optical design and fabrication : Microstructure fabrication
(320.7120) Ultrafast optics : Ultrafast phenomena

History
Original Manuscript: September 28, 2003
Revised Manuscript: March 28, 2004
Published: August 10, 2004

Citation
Xi Wang, Hengchang Guo, Hong Yang, Hongbing Jiang, and Qihuang Gong, "Fabrication of beam shapers in the bulk of fused silica by femtosecond laser pulses," Appl. Opt. 43, 4571-4574 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-23-4571

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