  Bessel beams (BBs) appear immune to diffraction over finite propagation
distances due to the conical nature of light propagation along the optical
axis. This offers promising advantages in laser fabrication. However, BBs
exhibit a significant intensity variation along the direction of propagation.
We present a simple technique to engineer the axial intensity of the BB over
centimeters-long propagation distances without expansion of the incoming laser
beam. This method uses two diffractive optical elements (DOEs), one converts
the input Gaussian intensity profile to an intermediate intensity distribution,
which illuminates the second DOE, a binary axicon. BBs of desired axial
intensity distribution over few centimeters length can be fabricated.
