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Improved phase hologram design for generating symmetric light spots and its application for laser writing of waveguides |
Optics Letters, Vol. 36, Issue 7, pp. 1065-1067 (2011)
http://dx.doi.org/10.1364/OL.36.001065
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Abstract
The improved method for calculation of a phase hologram and its application to laser writing of waveguides with a spatial light modulator are presented. It was found that the amplitude and phase distributions of light spots generated by a phase hologram can be distorted compared to those of a focused single beam. The distortion of light spots could be reduced by adding a simple constraint, in which light intensities around a light spot should be as small as possible, to the conventional calculation method of a phase hologram. It was also demonstrated that the improved calculation method can be considered essential for laser writing of waveguides.
© 2011 Optical Society of America
OCIS Codes
(090.1760) Holography : Computer holography
(140.3390) Lasers and laser optics : Laser materials processing
(140.7090) Lasers and laser optics : Ultrafast lasers
(230.7370) Optical devices : Waveguides
(070.6120) Fourier optics and signal processing : Spatial light modulators
ToC Category:
Holography
History
Original Manuscript: October 25, 2010
Revised Manuscript: January 9, 2011
Manuscript Accepted: January 26, 2011
Published: March 17, 2011
Citation
Masaaki Sakakura, Tsutomu Sawano, Yasuhiko Shimotsuma, Kiyotaka Miura, and Kazuyuki Hirao, "Improved phase hologram design for generating symmetric light spots and its application for laser writing of waveguides," Opt. Lett. 36, 1065-1067 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1065
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