(self)
return self.z + I*self.z_r
The complex parameter representing the beam.

        Examples
        ========

        >>> from sympy.physics.gaussopt import BeamParameter
        >>> p = BeamParameter(530e-9, 1, w=1e-3)
        >>> p.q
        1 + 1.88679245283019*I*pi
The complex parameter representing the beam.
The complex parameter representing the beam .
def q(self):
        """
        The complex parameter representing the beam.

        Examples
        ========

        >>> from sympy.physics.gaussopt import BeamParameter
        >>> p = BeamParameter(530e-9, 1, w=1e-3)
        >>> p.q
        1 + 1.88679245283019*I*pi
        """
        return self.z + I*self.z_r
def q ( self ) : return self . z + I * self . z_r