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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 6 — Mar. 19, 2007
  • pp: 3023–3030

Cylindrical quasi-cavity waveguide for static wide angle pattern projection

Kaveh Sahba, Kamal E. Alameh, Clifton L. Smith, and Arie Paap  »View Author Affiliations


Optics Express, Vol. 15, Issue 6, pp. 3023-3030 (2007)
http://dx.doi.org/10.1364/OE.15.003023


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Abstract

Beam deflection methods such as rotary mirrors and motorized turning optical heads suffer from a variety of electro-mechanical related problems which affect laser scanning performance. These include wobble, jitter, wear, windage and synchronization issues. A novel optical structure consisting of two concentric and cylindrical interfaces with unique optical coating properties for the static projection of a laser spot array over a wide angle is demonstrated. The resulting ray trajectory through the waveguide is modeled using linear equations. Spot size growth is modeled using previously defined ray transfer matrices for tilted optical elements. The model is validated by comparison with experimental spot size measurements for 20 transmitted beams. This novel form of spot projection can be used as the projection unit in optical sensing devices which range to multiple laser footprints.

© 2007 Optical Society of America

OCIS Codes
(080.2730) Geometric optics : Matrix methods in paraxial optics
(080.2740) Geometric optics : Geometric optical design
(280.3420) Remote sensing and sensors : Laser sensors

History
Original Manuscript: February 7, 2007
Revised Manuscript: March 8, 2007
Manuscript Accepted: March 9, 2007
Published: March 19, 2007

Citation
Kaveh Sahba, Kamal E. Alameh, Clifton L. Smith, and Arie Paap, "Cylindrical quasi-cavity waveguide for static wide angle pattern projection," Opt. Express 15, 3023-3030 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-6-3023


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References

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