Abstract
Bragg pairs are used as fundamental units to realize optimized thin-film structures. This method is efficient in designing for a large number of layers, such as in a bandpass filter or an edge filter with a relatively wide stopband or angular range. It adapts readily to conventional optimization methodology (such as genetic algorithms). In this paper, the method is first illustrated by application to a conventional high-pass coating on glass, using one set of Bragg pair materials. This demonstrated a 10% improvement over an alternative design technique. A second example is demonstrated using two sets of Bragg pair materials, designed with a more complex merit function, to increase the reflectance around the Brewster angle for -polarized light. This demonstrated a 19% average reflection improvement across the stopband compared to a two-material design.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Xin Wen, Alan Lenef, Madis Raukas, and David Klotzkin
Appl. Opt. 62(14) 3557-3560 (2023)
Jinlong Zhang, Yujiang Xie, Xinbin Cheng, Hongfei Jiao, and Zhanshan Wang
Appl. Opt. 52(23) 5788-5793 (2013)
Abdel-Karim S. O. Hassan, Ahmed S. A. Mohamed, Mahmoud M. T. Maghrabi, and Nadia H. Rafat
Appl. Opt. 54(6) 1399-1409 (2015)