The company is a specialist in electrical discharge machining wire eroding, spark eroding, four-axis milling and hole burning
Photochemical hole burning (PHB) has long been recognized as both a magnificent tool for ultra-high-density optical memory (1) and a fruitful spectroscopic method for detecting properties of matrix polymers (2).
Photochemical hole burning of a dye molecule in epoxy resin was first studied b Furusawa, et al.
Free-base tetraphenylporphin (TPP), obtained from Wako Pure Chemical Industries, was used without further purification as a photoreactive guest molecule whose hole burning occurs as a phototautomeric reaction of internal protons.
An old technology has recently been gathering a lot of strange new names--spectral hole burning, 4-D optics, cubing, spin valves, giant magnetoresistance, and photorefractive polymer holograms, among others.
The hologram is formed by a technique called spectral hole burning.
Schellenberg has also worked as a staff scientist for IBM where he was involved in construction of the world's first computer storage system based on photochemical hole burning
and simulation of innovative phase-shifting masks.