Title : 
Comments on `Gaussian beams are fundamentally different from free-space modes´ by E.A.J. Marcatili and C.G. Someda
         
        
        
            Author_Institution : 
Dept. of Electr. Eng., Technol. Univ. of Nagaoka, Japan
         
        
        
        
        
            fDate : 
10/1/1988 12:00:00 AM
         
        
        
        
            Abstract : 
The commenter makes three points about the above-named work (see ibid., vol.QE-23, p.164-7, 1987). Specifically, he points out an apparently contradictory statement, gives another explanation for the interference-like pattern observed at the focus of an optical instrument as a result of excitation of higher modes, and explains why he is of the opinion that the Gaussian beam is a mode of propagation of electromagnetic waves in free space
         
        
            Keywords : 
aberrations; laser beams; light propagation; optical instruments; EM wave propagation; Gaussian beams; aberration; excitation; focus; free-space modes; higher modes; interference-like pattern; optical instruments; Boundary conditions; Differential equations; Diffraction; Engine cylinders; Fabry-Perot; Instruments; Integral equations; Interference; Optical propagation; Wave functions;
         
        
        
            Journal_Title : 
Quantum Electronics, IEEE Journal of