Analysis of error yielded by scalar approximation to the properties of laser diode beams.
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.
Hongzhou
Dong
D
School of Technical Physics, Xidian University, China. hzdong2005@hotmail.com
Shunxiang
Shi
S
Shouman
Chen
C