Based on the vector Rayleigh–Sommerfeld far-field diffraction integral formula, a vector model for describing the far field of a laser diode is proposed beyond the paraxial approximation. Through the analysis of the error yielded by the scalar approximation to the properties of laser diode beams, it is found that the error is only correlative with propagation distance and the coordinate perpendicular to the junction plane, and there is a certain relationship between the error and a space angle.
© 2006 Optical Society of America
Optical Design and Fabrication
Original Manuscript: January 3, 2006
Revised Manuscript: March 10, 2006
Manuscript Accepted: March 10, 2006
Dong Hongzhou, Shi Shunxiang, and Chen Shouman, "Analysis of error yielded by scalar approximation to the properties of laser diode beams," Appl. Opt. 45, 5160-5163 (2006)