TY - GEN N1 - Optica Applicata, Vol. 40, 2010, nr 1, s. 155-164 N2 - By expanding the hard-aperture function into a finite sum of complex Gaussian functions, an analytical formula for a four-beamlets laser array propagating through an apertured ABCD optical system is derived based on the generalized Collins formula. As a numerical example, the on-axis irradiance of a four-beamlets laser array focused by a squarely apertured bifocal thin lens is studied, and it is found that the focused irradiance is closely related to the parameters of the optical system and the laser array. Our formula provides a convenient way for studying the paraxial propagation of a four-beamlets laser array through an apertured ABCD optical system. L1 - http://www.dbc.wroc.pl/Content/58237/optappl_4001p155.pdf M3 - artykuł L2 - http://www.dbc.wroc.pl/Content/58237 PY - 2010 KW - optyka KW - four-beamlets laser array KW - propagation KW - optical system C1 - Wszystkie prawa zastrzeżone (Copyright) A1 - Yuan, Yangsheng A1 - Qu, Jun A1 - Shi, Jianping A1 - Cui, Zhifeng A2 - Gaj, Miron. Redakcja A2 - Urbańczyk, Wacław. Redakcja PB - Oficyna Wydawnicza Politechniki Wrocławskiej C6 - Dla wszystkich w zakresie dozwolonego użytku LA - eng CY - Wrocław T1 - Propagation of a four-beamlets laser array through an apertured optical system UR - http://www.dbc.wroc.pl/dlibra/publication/edition/58237 ER -