We present a new method for splitting of operators in the three-dimensional finite difference split-step nonparaxial beam propagation method. The method increases the accuracy and the efficiency in terms of speed and memory requirements for three-dimensional wide-angle beam propagation. It also makes the application of the perfectly matched layer (PML) boundary condition very simple.
© 2009 Optical Society of America
Original Manuscript: September 30, 2008
Revised Manuscript: February 7, 2009
Manuscript Accepted: February 26, 2009
Published: March 24, 2009
Debjani Bhattacharya and Anurag Sharma, "Three-dimensional finite difference split-step nonparaxial beam propagation method: new method for splitting of operators," Appl. Opt. 48, 1878-1885 (2009)