The idea for this project came from last year's article entitled "Jack-O-Laser of Doom" which involved creating a Jack-O-Lantern with a Laser Vortex projecting from the mouth and eyes. Our pumpkin was very similar, but instead we used a couple of our laser accessories to create a unique Jack-O-Lantern. This project would be great for parties and dance clubs, as well as your front porch.
The equipment you will need will be a laser with continuous operation, diffraction gratings, a pumpkin, and something that will create fog or smoke.
Step 1: Carve a Jack-O-Lantern
Step 2: Attach a Diffraction Grating to Your Laser.
Attach a Diffraction Grating to each laser to create a scattered beam effect; the more beams, the better the effect. We used electrical tape to hold the Diffraction Grating holder to the laser. Diffraction Gratings that split a single laser beam into many beams including the Matrix, the Double Matrix and the Mega Matrix will be the best for this project, and they are available from Novalasers.com in the Optics section.
Step 3: Setup the Laser and Cut a Hole.
We also used the lasers with Diffraction Gratings for back lights and background which helped to increase the effect of the Laser Pumpkin.
Step 4: Shut Off the Lights and Create Some Fog.
Laser beams will project out for long distances, so be sure not to shine your laser pumpkin anywhere that might affect other people's vision. Beware of cars, planes, and your neighbours.