Since both lasers are beam calibrated, alignment is assured when their profiles match. The lid of the GL-302 is hinged to swing back. Open the lid and carefully place the laser dye cells into their holders. Note that the holders are tilted to prevent regenerative feedback. Do not touch the windows of the dye cells or any of the laser optics.
Fingerprints can distort the laser beam and adversely affect performance.
Hold the dye cell by the corners near the top where the beam is not transmitted. Avoid direct exposure to the beam. The GL-302 will only lase when it is tuned within the emission curve of the dyes being used. Outside of this range, the laser will continue to emit light, but the wwavelength will not change and it wil not exhibit the familiar diffraction pattern associated with laser beam scattering. At this point, the laser is only emitting super- radiance, and not lasing.