The theory of boundary diffraction waves (BDWs) is gaining importance due to its simplicity and physically appealing nature. The present work reports formation of circular fringes far away from the geometrically illuminated region by interference of two BDWs. One BDW is reconstructed from the hologram while the second is coming directly from the knife-edge. The uniqueness of the fringes is that their position can be controlled on the screen at will and fringes can be produced with bright as well as dark central fringe. These results could play an important role in understanding the nature of diffraction of light.
© 2013 Optical Society of America
Original Manuscript: May 28, 2013
Manuscript Accepted: June 26, 2013
Published: July 22, 2013
Raj Kumar and D. P. Chhachhia, "Formation of circular fringes by interference of two boundary diffraction waves using holography," J. Opt. Soc. Am. A 30, 1627-1631 (2013)