Some orthogonal functions can be mapped onto other orthogonal functions by the Fourier transform. In this paper, by using the Fourier transform of Stieltjes-Wigert polynomials, we derive a sequence of exponential functions that are biorthogonal with respect to a complex weight function like exp(q1(ix + p 1 ) 2 + q 2 (ix + p 2 ) 2 ) on (-∞,∞). Then we restrict these introduced biorthogonal functions to a special case to obtain a sequence of trigonometric functions orthogonal with respect to the real weight function exp(-qx 2 ) on (-∞, ∞).