Abstract
High-contrast angular intensity fringes are generated by reflecting laser light from an uncoated spiral phase plate (SPP) device for the first time, to the best of our knowledge. As the laser frequency going into the device is tuned, the fringes rotate. Measured transverse fringe patterns match their theoretical predicted values. They have unity contrast, and their measured intensity varies with laser frequency in a fashion similar to a Fabry–Perot etalon. This effect can be used to enable new miniature devices for angle metrology, imaging, and microscopy.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Yisa S. Rumala
Opt. Lett. 45(6) 1555-1558 (2020)
Yisa S. Rumala
Appl. Opt. 55(8) 2024-2033 (2016)
Andrew Longman, Carlos Salgado, Ghassan Zeraouli, Jon I. Apiñaniz, Jose Antonio Pérez-Hernández, M. Khairy Eltahlawy, Luca Volpe, and Robert Fedosejevs
Opt. Lett. 45(8) 2187-2190 (2020)