Optical properties of light filter designed on absorbing axicon |
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| Authors: | A.E. Martirosyan |
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| Affiliation: | 1. Laboratório de Imunopatologia Keizo Asami, Universidade Federal de Pernambuco, Campus Universitário, s/n, Cidade Universitária, CEP: 50670-901 Recife, PE, Brazil;2. Departamento de Bioquímica, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, s/n, Cidade Universitária, CEP: 50670-420 Recife, PE, Brazil;3. Departamento de Física, Universidade Federal de Pernambuco, Avenida prof. Luiz Freire, s/n, CEP: 50670-901 Recife, PE, Brazil;4. IBB—Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal;1. Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Calcutta 700009, India;2. Disciplines of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364021, Gujarat, India;1. School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China;2. Sichuan Key Laboratory of Solid-State Laser and Applied Techniques, Chengdu University of Information Technology, Chengdu 610225, China;1. Wellman Center for Photomedicine and Center for System Biology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts;2. Department of Biomedical Engineering, Boston University, Boston, Massachusetts;3. Department of Mechanical Engineering, Boston University, Boston, Massachusetts |
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| Abstract: | The optical properties of a light filter designed based on an absorbing axicon are studied. It is shown that if axes of the filter and a radially symmetric incident beam coincide, then the light transmission through the filter is minimal. This phenomenon can be used to find the beam center, radius and divergence, as well as to form properly collimated Gaussian beams. The filter allows the apodization and continuously tuning of the laser radiation intensity. |
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