Self-imaging technique for beam collimation

Thumbnail Image
Full text at PDC
Publication Date
Torcal Milla, Francisco José
Herrera Fernández, José María
Morlanes, Tomás
Bernabeu Martínez, Eusebio
Advisors (or tutors)
Journal Title
Journal ISSN
Volume Title
Optical Society of America
Google Scholar
Research Projects
Organizational Units
Journal Issue
A simple collimation technique based on measuring the period of one self-image produced by a diffraction grating is proposed. Transversal displacement of the grating is not required, and then automatic single-frame processing can be performed. The self-image is acquired with a CMOS camera, and the period is computed using the variogram function. Analytical and experimental results are obtained, which show the simplicity and accuracy of the proposed technique.
© 2014 Optical Society of America. The authors thank to Jose Luis Vilas for his valuable comments. This work has been supported by the Ministry of Science and Innovation of Spain (project DPI2011-27851) and project Art. 83 LOU "Estudio de tecnologia para la realizacion de codificadores opticos de 2 mu m de periodo" with Fagor Automation S. Coop.
1. M. V. R. K. Murthy, Appl. Opt. 3, 531 (1964). 2. D. Malacara, Optical Shop Testing (Wiley, 1978), Chap. 4. 3. A. R. Ganesan and P. Venkateswarlu, Appl. Opt. 32, 2918 (1993). 4. D. E. Silva, Appl. Opt. 10, 1980 (1971). 5. D. Joyeux and Y. Cohen-Sabban, Appl. Opt. 21, 625 (1982). 6. J. Choi, G. Perera, M. Aggarwal, R. Shukla, and M. Mantravadi, Appl. Opt. 34, 3628 (1995). 7. J. S. Darlin, M. P. Kothiyal, and R. S. Sirohi, J. Mod. Opt. 45, 2371 (1998). 8. P. Senthilkumaran, Appl. Opt. 42, 6314 (2003). 9. S. Yokozeki, K. Patorski, and K. Ohnishi, Opt. Commun. 14, 401 (1975). 10. S. Haramaki, S. Yokozeki, A. Hayashi, and H. Suzuki, Proc. SPIE 4416, 388 (2001). 11. L. M. Sanchez-Brea, F. J. Torcal-Milla, F. J. SalgadoRemacha, T. Morlanes, I. Jimenez-Castillo, and E. Bernabeu, Appl. Opt. 49, 3363 (2010). 12. K. Patorski, K. Pokorski, and M. Trusiak, Opt. Lett. 39, 291 (2014). 13. N. Guerineau, B. Harchaoui, and J. Primot, Opt. Commun. 180, 199 (2000). 14. N. Cressie, Statistics for Spatial Data, revised ed. (Wiley, 1993), Vol. 928. 15. L. M. Sanchez-Brea, F. J. Torcal-Milla, and E. Bernabeu, Appl. Opt. 46, 5027 (2007). 16. L. M. Sanchez-Brea and E. Bernabeu, Appl. Opt. 44, 3276 (2005). 17. .optimize.minimize_scalar.html. 18. J. Dhanotia and S. Prakash, Appl. Opt. 50, 1446 (2011). 19. R. Disawal, J. Dhanotia, and S. Prakash, Prec. Eng. 38, 948 (2014). 20. W. Y. Chang, K. Y. Hsu, K. H. Chen, and J. H. Chen, Opt. Lasers Eng. 62, 126 (2014).